What is the PM10 level in California, USA at the moment?

The PM10 concentration in California, USA is 29.714 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in California, USA at the moment?

Currently, California, USA has a sulfur dioxide (SO2) concentration of 0.759 ppb.

What is the ozone (O3) level in California, USA at the moment?

The current ozone (O3) level in California, USA at the moment is 46.493 ppm.

What is the nitrogen dioxide (NO2) level in California, USA at the moment?

Nitrogen dioxide (NO2) level in California, USA at the moment is 5.545 ppb.

Real-time air quality index in California, USA today

Name: Live air pollution levels in California, USA today
Creator: Ambee

Stay updated with real-time air quality in California, USA featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Good

California, USA

Last updated: ... (Local time)

Major air pollutants in California, USA

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.14 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

28.55 μg/m³

155

255

425

605+

Ozone (O₃)

46.36 ppb

201

201+

Sulfur Dioxide (SO₂)

0.90 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.32 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

California, USA

Get Live Pollen Counts

California, USA

Scroll To Air Quality Map

Track live California, USA air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-30T02:00:00.000Z	67 \| moderate	7.184 \| good	25.369 \| good	60.053 \| fine	0.884 \| good	2.642 \| good	0.157 \| good
2025-06-30T03:00:00.000Z	77 \| moderate	8.637 \| good	25.936 \| good	62.835 \| fine	0.819 \| good	3.432 \| good	0.157 \| good
2025-06-30T04:00:00.000Z	54 \| moderate	9.333 \| good	29.311 \| good	55.721 \| fine	0.635 \| good	3.941 \| good	0.151 \| good
2025-06-30T05:00:00.000Z	49 \| good	8.397 \| good	30.758 \| good	53.425 \| good	0.818 \| good	6.851 \| good	0.151 \| good
2025-06-30T06:00:00.000Z	52 \| moderate	9.825 \| good	27.921 \| good	48.57 \| good	0.693 \| good	6.884 \| good	0.151 \| good
2025-06-30T07:00:00.000Z	41 \| good	7.329 \| good	31.27 \| good	44.059 \| good	0.683 \| good	6.931 \| good	0.109 \| good
2025-06-30T08:00:00.000Z	44 \| good	8.469 \| good	21.12 \| good	42.357 \| good	0.601 \| good	6.503 \| good	0.109 \| good
2025-06-30T09:00:00.000Z	40 \| good	7.45 \| good	35.21 \| good	43.477 \| good	0.61 \| good	4.976 \| good	0.109 \| good
2025-06-30T10:00:00.000Z	33 \| good	6.417 \| good	24.614 \| good	35.317 \| good	0.536 \| good	5.666 \| good	0.109 \| good
2025-06-30T11:00:00.000Z	33 \| good	5.801 \| good	24.482 \| good	29.673 \| good	0.464 \| good	7.823 \| good	0.109 \| good
2025-06-30T12:00:00.000Z	33 \| good	5.676 \| good	25.213 \| good	25.881 \| good	0.465 \| good	8.425 \| good	0.109 \| good
2025-06-30T13:00:00.000Z	33 \| good	5.955 \| good	26.651 \| good	26.366 \| good	0.465 \| good	10.604 \| good	0.1 \| good
2025-06-30T14:00:00.000Z	44 \| good	8.137 \| good	29.017 \| good	25.358 \| good	0.494 \| good	10.215 \| good	0.1 \| good
2025-06-30T15:00:00.000Z	38 \| good	7.392 \| good	28.542 \| good	23.943 \| good	0.839 \| good	15.194 \| good	0.181 \| good
2025-06-30T16:00:00.000Z	38 \| good	6.532 \| good	28.202 \| good	32.458 \| good	1.526 \| good	10.693 \| good	0.181 \| good
2025-06-30T17:00:00.000Z	38 \| good	6.601 \| good	21.443 \| good	34.59 \| good	1.365 \| good	9.487 \| good	0.174 \| good
2025-06-30T18:00:00.000Z	45 \| good	6.518 \| good	26.567 \| good	48.905 \| good	1.03 \| good	6.407 \| good	0.113 \| good
2025-06-30T19:00:00.000Z	52 \| moderate	9.667 \| good	26.151 \| good	51.268 \| good	0.885 \| good	6.865 \| good	0.113 \| good
2025-06-30T20:00:00.000Z	47 \| good	6.228 \| good	27.915 \| good	51.313 \| good	1.104 \| good	7.844 \| good	0.139 \| good
2025-06-30T21:00:00.000Z	50 \| good	4.932 \| good	20.008 \| good	54.194 \| good	1.152 \| good	7.288 \| good	0.1 \| good
2025-06-30T22:00:00.000Z	51 \| moderate	7.93 \| good	27.981 \| good	55.46 \| fine	1.048 \| good	5.37 \| good	0.1 \| good
2025-06-30T23:00:00.000Z	71 \| moderate	6.98 \| good	22.676 \| good	60.874 \| fine	1.554 \| good	5.892 \| good	0.1 \| good
2025-07-01T00:00:00.000Z	80 \| moderate	7.567 \| good	37.935 \| good	64.116 \| fine	1.304 \| good	5.441 \| good	0.1 \| good
2025-07-01T01:00:00.000Z	84 \| moderate	9.069 \| good	40.89 \| good	64.551 \| fine	0.918 \| good	5.224 \| good	0.1 \| good
2025-07-01T02:00:00.000Z	74 \| moderate	8.077 \| good	29.024 \| good	62.17 \| fine	1.056 \| good	5.765 \| good	0.1 \| good
2025-07-01T03:00:00.000Z	77 \| moderate	8.586 \| good	34.836 \| good	62.629 \| fine	1.012 \| good	5.382 \| good	0.1 \| good
2025-07-01T04:00:00.000Z	64 \| moderate	8.037 \| good	34.775 \| good	59.135 \| fine	0.993 \| good	7.584 \| good	0.1 \| good
2025-07-01T05:00:00.000Z	67 \| moderate	9.287 \| good	19.836 \| good	60.485 \| fine	0.93 \| good	8.326 \| good	0.132 \| good
2025-07-01T06:00:00.000Z	54 \| moderate	7.771 \| good	39.555 \| good	55.637 \| fine	0.811 \| good	7.485 \| good	0.132 \| good
2025-07-01T07:00:00.000Z	45 \| good	7.345 \| good	26.457 \| good	48.84 \| good	0.673 \| good	8.517 \| good	0.132 \| good
2025-07-01T08:00:00.000Z	44 \| good	8.141 \| good	32.443 \| good	47.885 \| good	0.738 \| good	7.352 \| good	0.1 \| good
2025-07-01T09:00:00.000Z	40 \| good	7.44 \| good	29.992 \| good	42.66 \| good	0.655 \| good	6.963 \| good	0.1 \| good
2025-07-01T10:00:00.000Z	49 \| good	9.126 \| good	33.279 \| good	30.556 \| good	0.465 \| good	6.39 \| good	0.1 \| good
2025-07-01T11:00:00.000Z	49 \| good	8.551 \| good	20.152 \| good	29.767 \| good	0.475 \| good	9.098 \| good	0.1 \| good
2025-07-01T12:00:00.000Z	44 \| good	7.58 \| good	25.904 \| good	31.271 \| good	0.467 \| good	14.423 \| good	0.1 \| good
2025-07-01T13:00:00.000Z	38 \| good	6.808 \| good	32.612 \| good	26.258 \| good	0.402 \| good	11.592 \| good	0.132 \| good
2025-07-01T14:00:00.000Z	38 \| good	6.893 \| good	31.493 \| good	24.763 \| good	0.411 \| good	13.524 \| good	0.183 \| good
2025-07-01T15:00:00.000Z	38 \| good	7.087 \| good	25.429 \| good	25.247 \| good	0.539 \| good	15.828 \| good	0.19 \| good
2025-07-01T16:00:00.000Z	41 \| good	7.321 \| good	44.018 \| good	26.936 \| good	0.816 \| good	13.745 \| good	0.206 \| good
2025-07-01T17:00:00.000Z	49 \| good	8.646 \| good	35.453 \| good	32.83 \| good	1.668 \| good	15.312 \| good	0.181 \| good
2025-07-01T18:00:00.000Z	35 \| good	6.245 \| good	26.877 \| good	37.7 \| good	1.683 \| good	11.781 \| good	0.181 \| good
2025-07-01T19:00:00.000Z	49 \| good	6.981 \| good	33.964 \| good	53.272 \| good	1.623 \| good	10.244 \| good	0.181 \| good
2025-07-01T20:00:00.000Z	42 \| good	6.934 \| good	31.402 \| good	45.42 \| good	1.021 \| good	7.365 \| good	0.158 \| good
2025-07-01T21:00:00.000Z	50 \| good	9.453 \| good	27.682 \| good	54.012 \| good	0.948 \| good	5.932 \| good	0.158 \| good
2025-07-01T22:00:00.000Z	61 \| moderate	6.665 \| good	32.567 \| good	57.894 \| fine	1.268 \| good	5.821 \| good	0.158 \| good
2025-07-01T23:00:00.000Z	67 \| moderate	9.349 \| good	41.191 \| good	60.046 \| fine	1.452 \| good	5.321 \| good	0.149 \| good
2025-07-02T00:00:00.000Z	74 \| moderate	8.812 \| good	50.248 \| good	62.283 \| fine	2.167 \| good	5.097 \| good	0.142 \| good
2025-07-02T01:00:00.000Z	84 \| moderate	10.288 \| good	44.676 \| good	64.922 \| fine	1.643 \| good	5.758 \| good	0.151 \| good
2025-07-02T01:00:00.000Z	43 \| good	7.145 \| good	28.55 \| good	46.359 \| good	0.902 \| good	5.324 \| good	0.214 \| good
2025-07-02T01:00:00.000Z	97 \| moderate	7.367 \| good	32.584 \| good	68.915 \| fine	0.407 \| good	1.262 \| good	0.142 \| good
2025-07-02T02:00:00.000Z	77 \| moderate	6.721 \| good	29.774 \| good	63.094 \| fine	0.397 \| good	1.878 \| good	0.144 \| good
2025-07-02T03:00:00.000Z	54 \| moderate	6.9 \| good	30.67 \| good	56.025 \| fine	0.387 \| good	2.495 \| good	0.147 \| good
2025-07-02T04:00:00.000Z	48 \| good	7.43 \| good	32.686 \| good	52.061 \| good	0.419 \| good	3.5 \| good	0.159 \| good
2025-07-02T05:00:00.000Z	46 \| good	7.546 \| good	33.232 \| good	49.788 \| good	0.45 \| good	4.504 \| good	0.17 \| good
2025-07-02T06:00:00.000Z	44 \| good	7.675 \| good	33.389 \| good	45.826 \| good	0.482 \| good	5.509 \| good	0.182 \| good
2025-07-02T07:00:00.000Z	44 \| good	7.744 \| good	34.198 \| good	39.427 \| good	0.483 \| good	5.858 \| good	0.187 \| good
2025-07-02T08:00:00.000Z	44 \| good	7.625 \| good	33.383 \| good	36.971 \| good	0.484 \| good	6.208 \| good	0.191 \| good
2025-07-02T09:00:00.000Z	44 \| good	8.086 \| good	35.378 \| good	33.861 \| good	0.485 \| good	6.558 \| good	0.196 \| good
2025-07-02T10:00:00.000Z	38 \| good	7.241 \| good	31.745 \| good	32.132 \| good	0.479 \| good	6.807 \| good	0.197 \| good
2025-07-02T11:00:00.000Z	38 \| good	6.715 \| good	29.865 \| good	30.861 \| good	0.473 \| good	7.056 \| good	0.198 \| good
2025-07-02T12:00:00.000Z	44 \| good	7.566 \| good	33.119 \| good	29.638 \| good	0.468 \| good	7.306 \| good	0.199 \| good
2025-07-02T13:00:00.000Z	38 \| good	7.391 \| good	32.692 \| good	27.923 \| good	0.501 \| good	6.27 \| good	0.197 \| good
2025-07-02T14:00:00.000Z	44 \| good	7.873 \| good	34.655 \| good	28.953 \| good	0.535 \| good	5.234 \| good	0.194 \| good
2025-07-02T15:00:00.000Z	44 \| good	7.722 \| good	33.978 \| good	32.584 \| good	0.569 \| good	4.198 \| good	0.192 \| good
2025-07-02T16:00:00.000Z	44 \| good	7.77 \| good	34.02 \| good	38.687 \| good	0.649 \| good	3.35 \| good	0.185 \| good
2025-07-02T17:00:00.000Z	43 \| good	7.269 \| good	31.838 \| good	45.61 \| good	0.729 \| good	2.502 \| good	0.178 \| good
2025-07-02T18:00:00.000Z	49 \| good	7.416 \| good	32.678 \| good	53.411 \| good	0.81 \| good	1.655 \| good	0.171 \| good
2025-07-02T19:00:00.000Z	64 \| moderate	7.017 \| good	31.061 \| good	59.45 \| fine	0.738 \| good	1.363 \| good	0.165 \| good
2025-07-02T20:00:00.000Z	77 \| moderate	7.349 \| good	32.136 \| good	63.417 \| fine	0.667 \| good	1.072 \| good	0.159 \| good
2025-07-02T21:00:00.000Z	87 \| moderate	6.848 \| good	30.066 \| good	65.724 \| fine	0.596 \| good	0.78 \| good	0.152 \| good
2025-07-02T22:00:00.000Z	93 \| moderate	6.734 \| good	29.987 \| good	68.129 \| fine	0.537 \| good	0.738 \| good	0.148 \| good
2025-07-02T23:00:00.000Z	90 \| moderate	6.742 \| good	29.975 \| good	67.242 \| fine	0.479 \| good	0.697 \| good	0.143 \| good
2025-07-03T00:00:00.000Z	87 \| moderate	6.036 \| good	26.921 \| good	65.579 \| fine	0.42 \| good	0.655 \| good	0.138 \| good
2025-07-03T01:00:00.000Z	87 \| moderate	6.48 \| good	29 \| good	65.874 \| fine	0.396 \| good	1.105 \| good	0.139 \| good
2025-07-03T02:00:00.000Z	71 \| moderate	6.559 \| good	29.148 \| good	60.609 \| fine	0.373 \| good	1.556 \| good	0.14 \| good
2025-07-03T03:00:00.000Z	51 \| moderate	7.118 \| good	31.605 \| good	54.956 \| good	0.349 \| good	2.006 \| good	0.141 \| good
2025-07-03T04:00:00.000Z	46 \| good	7.782 \| good	34.149 \| good	50.148 \| good	0.387 \| good	3.119 \| good	0.153 \| good
2025-07-03T05:00:00.000Z	44 \| good	7.902 \| good	34.502 \| good	47.668 \| good	0.424 \| good	4.232 \| good	0.165 \| good
2025-07-03T06:00:00.000Z	44 \| good	7.899 \| good	34.712 \| good	43.266 \| good	0.461 \| good	5.344 \| good	0.177 \| good
2025-07-03T07:00:00.000Z	44 \| good	7.897 \| good	35.075 \| good	38.359 \| good	0.461 \| good	5.895 \| good	0.185 \| good
2025-07-03T08:00:00.000Z	44 \| good	7.66 \| good	33.619 \| good	35.715 \| good	0.46 \| good	6.446 \| good	0.192 \| good
2025-07-03T09:00:00.000Z	38 \| good	7.279 \| good	31.743 \| good	33.641 \| good	0.46 \| good	6.997 \| good	0.2 \| good
2025-07-03T10:00:00.000Z	38 \| good	6.537 \| good	29.213 \| good	33.606 \| good	0.425 \| good	6.691 \| good	0.198 \| good
2025-07-03T11:00:00.000Z	33 \| good	6.074 \| good	26.435 \| good	33.255 \| good	0.391 \| good	6.386 \| good	0.196 \| good
2025-07-03T12:00:00.000Z	38 \| good	6.829 \| good	30.119 \| good	27.516 \| good	0.356 \| good	6.08 \| good	0.195 \| good
2025-07-03T13:00:00.000Z	33 \| good	6.121 \| good	26.603 \| good	26.777 \| good	0.388 \| good	5.253 \| good	0.193 \| good
2025-07-03T14:00:00.000Z	38 \| good	6.911 \| good	30.618 \| good	27.939 \| good	0.42 \| good	4.426 \| good	0.192 \| good
2025-07-03T15:00:00.000Z	38 \| good	6.836 \| good	30.55 \| good	33.475 \| good	0.452 \| good	3.599 \| good	0.191 \| good
2025-07-03T16:00:00.000Z	38 \| good	6.627 \| good	29.563 \| good	40.955 \| good	0.545 \| good	2.812 \| good	0.179 \| good
2025-07-03T17:00:00.000Z	44 \| good	7.03 \| good	31.265 \| good	47.561 \| good	0.639 \| good	2.025 \| good	0.167 \| good
2025-07-03T18:00:00.000Z	54 \| moderate	7.758 \| good	34.186 \| good	55.881 \| fine	0.733 \| good	1.239 \| good	0.154 \| good
2025-07-03T19:00:00.000Z	71 \| moderate	8.306 \| good	36.489 \| good	61.172 \| fine	0.658 \| good	1.027 \| good	0.144 \| good
2025-07-03T20:00:00.000Z	84 \| moderate	8.369 \| good	36.813 \| good	65.353 \| fine	0.584 \| good	0.816 \| good	0.133 \| good
2025-07-03T21:00:00.000Z	87 \| moderate	7.307 \| good	31.981 \| good	66.177 \| fine	0.51 \| good	0.605 \| good	0.123 \| good
2025-07-03T22:00:00.000Z	87 \| moderate	6.419 \| good	28.603 \| good	66.322 \| fine	0.441 \| good	0.574 \| good	0.111 \| good
2025-07-03T23:00:00.000Z	84 \| moderate	5.302 \| good	22.694 \| good	65.132 \| fine	0.372 \| good	0.543 \| good	0.099 \| good
2025-07-04T00:00:00.000Z	74 \| moderate	3.998 \| good	6.115 \| good	62.21 \| fine	0.301 \| good	0.518 \| good	0.087 \| good

California

Get reliable air quality data to drive your business

California, USA air quality map: Stay updated on AQI near you

Air quality in cities of California, USA

City	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
Crestline, California	150 Unhealthy for sensitive groups	11.26μg/m³ Good	49.80μg/m³ Good	84.84ppb Moderate	0.56ppb Good	4.84ppb Good	0.22ppm Good
Lake Arrowhead, California	126 Unhealthy for sensitive groups	9.54μg/m³ Good	41.33μg/m³ Good	78.15ppb Moderate	0.56ppb Good	5.08ppb Good	0.21ppm Good
Beaumont, California	122 Unhealthy for sensitive groups	8.77μg/m³ Good	69.16μg/m³ Fine	76.76ppb Moderate	0.55ppb Good	3.73ppb Good	0.20ppm Good
Redlands, California	122 Unhealthy for sensitive groups	9.09μg/m³ Good	37.06μg/m³ Good	76.76ppb Moderate	0.54ppb Good	6.15ppb Good	0.21ppm Good
Banning, California	119 Unhealthy for sensitive groups	6.33μg/m³ Good	27.07μg/m³ Good	76.32ppb Moderate	0.58ppb Good	3.54ppb Good	0.20ppm Good
Highland, California	119 Unhealthy for sensitive groups	8.55μg/m³ Good	35.36μg/m³ Good	76.26ppb Moderate	0.54ppb Good	6.46ppb Good	0.21ppm Good
Calimesa, California	115 Unhealthy for sensitive groups	7.58μg/m³ Good	30.93μg/m³ Good	75.25ppb Moderate	0.56ppb Good	5.28ppb Good	0.21ppm Good
Muscoy, California	115 Unhealthy for sensitive groups	10.18μg/m³ Good	41.01μg/m³ Good	75.24ppb Moderate	0.51ppb Good	8.05ppb Good	0.21ppm Good
Santa Clarita, California	115 Unhealthy for sensitive groups	9.49μg/m³ Good	42.50μg/m³ Good	75.41ppb Moderate	0.76ppb Good	6.38ppb Good	0.10ppm Good
Yucaipa, California	115 Unhealthy for sensitive groups	7.69μg/m³ Good	31.35μg/m³ Good	75.32ppb Moderate	0.56ppb Good	5.41ppb Good	0.21ppm Good
Loma Linda, California	115 Unhealthy for sensitive groups	8.23μg/m³ Good	34.09μg/m³ Good	74.92ppb Moderate	0.52ppb Good	6.66ppb Good	0.20ppm Good
Colton, California	115 Unhealthy for sensitive groups	8.53μg/m³ Good	35.68μg/m³ Good	74.55ppb Moderate	0.50ppb Good	6.60ppb Good	0.20ppm Good
San Bernardino, California	112 Unhealthy for sensitive groups	7.01μg/m³ Good	28.70μg/m³ Good	74.15ppb Moderate	0.55ppb Good	7.05ppb Good	0.20ppm Good
Grand Terrace, California	108 Unhealthy for sensitive groups	9.62μg/m³ Good	40.89μg/m³ Good	72.58ppb Moderate	0.46ppb Good	6.26ppb Good	0.20ppm Good
Woodcrest, California	97 Moderate	10.61μg/m³ Good	51.03μg/m³ Good	69.23ppb Fine	0.39ppb Good	6.67ppb Good	0.21ppm Good
Canyon Lake, California	93 Moderate	6.54μg/m³ Good	49.96μg/m³ Good	67.99ppb Fine	0.55ppb Good	3.41ppb Good	0.20ppm Good
Glendora, California	93 Moderate	15.68μg/m³ Fine	48.39μg/m³ Good	67.66ppb Fine	0.48ppb Good	8.49ppb Good	0.30ppm Good
Baldwin Park, California	90 Moderate	7.38μg/m³ Good	21.17μg/m³ Good	67.27ppb Fine	0.51ppb Good	10.23ppb Good	0.20ppm Good
Norco, California	90 Moderate	13.16μg/m³ Fine	53.29μg/m³ Good	66.84ppb Fine	0.47ppb Good	13.34ppb Good	0.22ppm Good
Rancho Cucamonga, California	90 Moderate	13.09μg/m³ Fine	48.13μg/m³ Good	66.80ppb Fine	0.52ppb Good	19.78ppb Good	0.24ppm Good
Reedley, California	90 Moderate	8.06μg/m³ Good	43.26μg/m³ Good	66.66ppb Fine	1.50ppb Good	3.59ppb Good	0.15ppm Good
Parlier, California	90 Moderate	8.18μg/m³ Good	43.90μg/m³ Good	66.61ppb Fine	1.51ppb Good	3.80ppb Good	0.15ppm Good
Greenfield city, California	87 Moderate	7.18μg/m³ Good	45.45μg/m³ Good	66.28ppb Fine	1.20ppb Good	9.13ppb Good	0.10ppm Good
Menifee, California	87 Moderate	8.55μg/m³ Good	63.96μg/m³ Fine	66.19ppb Fine	0.56ppb Good	3.65ppb Good	0.20ppm Good
Ontario, California	87 Moderate	11.92μg/m³ Good	46.10μg/m³ Good	66.22ppb Fine	0.51ppb Good	23.38ppb Good	0.23ppm Good
Temescal Valley, California	87 Moderate	6.81μg/m³ Good	33.04μg/m³ Good	66.23ppb Fine	0.57ppb Good	5.13ppb Good	0.21ppm Good
Eastvale, California	87 Moderate	12.65μg/m³ Fine	48.99μg/m³ Good	66.14ppb Fine	0.51ppb Good	19.31ppb Good	0.23ppm Good
Sanger, California	87 Moderate	7.50μg/m³ Good	36.81μg/m³ Good	65.62ppb Fine	1.54ppb Good	5.19ppb Good	0.15ppm Good
Stevenson Ranch, California	87 Moderate	7.68μg/m³ Good	34.68μg/m³ Good	65.70ppb Fine	0.78ppb Good	6.08ppb Good	0.11ppm Good
Kingsburg, California	87 Moderate	8.14μg/m³ Good	42.02μg/m³ Good	65.50ppb Fine	1.51ppb Good	4.12ppb Good	0.14ppm Good
Lamont, California	84 Moderate	6.42μg/m³ Good	39.26μg/m³ Good	65.48ppb Fine	1.08ppb Good	9.91ppb Good	0.11ppm Good
Upland, California	84 Moderate	11.74μg/m³ Good	43.68μg/m³ Good	65.39ppb Fine	0.51ppb Good	20.00ppb Good	0.23ppm Good
Big Bear City, California	84 Moderate	0.30μg/m³ Good	1.44μg/m³ Good	65.25ppb Fine	0.57ppb Good	3.71ppb Good	0.22ppm Good
Duarte, California	84 Moderate	8.37μg/m³ Good	20.62μg/m³ Good	65.13ppb Fine	0.49ppb Good	13.79ppb Good	0.20ppm Good
Lindsay, California	84 Moderate	6.51μg/m³ Good	27.14μg/m³ Good	65.10ppb Fine	1.29ppb Good	5.71ppb Good	0.12ppm Good
Monrovia, California	84 Moderate	8.37μg/m³ Good	20.62μg/m³ Good	65.13ppb Fine	0.49ppb Good	13.79ppb Good	0.20ppm Good
Visalia, California	84 Moderate	6.04μg/m³ Good	27.37μg/m³ Good	64.98ppb Fine	1.35ppb Good	3.93ppb Good	0.13ppm Good
Farmersville, California	84 Moderate	7.01μg/m³ Good	35.51μg/m³ Good	64.92ppb Fine	1.32ppb Good	4.87ppb Good	0.13ppm Good
Exeter, California	84 Moderate	7.38μg/m³ Good	43.35μg/m³ Good	64.83ppb Fine	1.31ppb Good	5.06ppb Good	0.13ppm Good
Citrus, California	84 Moderate	13.88μg/m³ Fine	43.55μg/m³ Good	64.58ppb Fine	0.48ppb Good	8.42ppb Good	0.27ppm Good
Azusa, California	84 Moderate	13.88μg/m³ Fine	43.55μg/m³ Good	64.58ppb Fine	0.48ppb Good	8.42ppb Good	0.27ppm Good
Chino, California	80 Moderate	10.99μg/m³ Good	41.06μg/m³ Good	64.48ppb Fine	0.51ppb Good	19.93ppb Good	0.23ppm Good
Clovis, California	84 Moderate	7.04μg/m³ Good	42.63μg/m³ Good	64.62ppb Fine	1.65ppb Good	2.35ppb Good	0.19ppm Good
Porterville, California	80 Moderate	7.53μg/m³ Good	33.81μg/m³ Good	64.44ppb Fine	1.34ppb Good	6.00ppb Good	0.12ppm Good
Tulare, California	84 Moderate	7.17μg/m³ Good	36.42μg/m³ Good	64.61ppb Fine	1.33ppb Good	4.81ppb Good	0.13ppm Good
Wildomar, California	84 Moderate	6.54μg/m³ Good	47.77μg/m³ Good	64.62ppb Fine	0.55ppb Good	3.35ppb Good	0.20ppm Good
Hemet, California	80 Moderate	9.67μg/m³ Good	45.52μg/m³ Good	64.26ppb Fine	0.55ppb Good	3.66ppb Good	0.20ppm Good
Jurupa Valley, California	80 Moderate	13.58μg/m³ Fine	56.80μg/m³ Fine	64.16ppb Fine	0.50ppb Good	5.27ppb Good	0.20ppm Good
Palmdale, California	80 Moderate	2.17μg/m³ Good	10.57μg/m³ Good	64.11ppb Fine	0.72ppb Good	5.05ppb Good	0.18ppm Good
Potomac Park, California	80 Moderate	6.80μg/m³ Good	45.07μg/m³ Good	64.15ppb Fine	1.19ppb Good	11.00ppb Good	0.10ppm Good

City	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
No results found

0.13ppm

How accurate is California, USA air quality data?

Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

How often is air quality information updated for California, USA?

The air quality information for California, USA is updated every hour for accuracy.

What time in the last 24 hours was the air quality in California, USA at its worst?

In the past 24 hours, the air quality in California, USA was at its worst at 01:00:00 on 2025-07-01.

When did California, USA experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in California, USA was observed at 06:00:00 on 2025-07-01.

What is the AQI in California, USA right now?

As of now, the AQI in California, USA is 43, indicating Good conditions.

What is the most common type of pollution in California, USA?

California, USA air has the highest levels of O3.

What should I do in case of poor air quality in California, USA?

Poor air quality in California, USA means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in California, USA at the moment?

PM_2.5 levels in California, USA are currently 7.279 μg/m³.

What is the PM₁₀ level in California, USA at the moment?

The PM₁₀ concentration in California, USA is 29.714 μg/m³ at the moment.

What is the carbon monoxide (CO) level in California, USA at the moment?

The current carbon monoxide (CO) concentration in California, USA is 0.226 ppm.

What is the sulfur dioxide (SO₂) level in California, USA at the moment?

Currently, California, USA has a sulfur dioxide (SO₂) concentration of 0.759 ppb.

What is the ozone (O₃) level in California, USA at the moment?

The current ozone (O₃) level in California, USA at the moment is 46.493 ppm.

What is the nitrogen dioxide (NO₂) level in California, USA at the moment?

Nitrogen dioxide (NO₂) level in California, USA at the moment is 5.545 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-30T02:00:00.000Z	67 \| moderate	7.184 \| good	25.369 \| good	60.053 \| fine	0.884 \| good	2.642 \| good	0.157 \| good
2025-06-30T03:00:00.000Z	77 \| moderate	8.637 \| good	25.936 \| good	62.835 \| fine	0.819 \| good	3.432 \| good	0.157 \| good
2025-06-30T04:00:00.000Z	54 \| moderate	9.333 \| good	29.311 \| good	55.721 \| fine	0.635 \| good	3.941 \| good	0.151 \| good
2025-06-30T05:00:00.000Z	49 \| good	8.397 \| good	30.758 \| good	53.425 \| good	0.818 \| good	6.851 \| good	0.151 \| good
2025-06-30T06:00:00.000Z	52 \| moderate	9.825 \| good	27.921 \| good	48.57 \| good	0.693 \| good	6.884 \| good	0.151 \| good
2025-06-30T07:00:00.000Z	41 \| good	7.329 \| good	31.27 \| good	44.059 \| good	0.683 \| good	6.931 \| good	0.109 \| good
2025-06-30T08:00:00.000Z	44 \| good	8.469 \| good	21.12 \| good	42.357 \| good	0.601 \| good	6.503 \| good	0.109 \| good
2025-06-30T09:00:00.000Z	40 \| good	7.45 \| good	35.21 \| good	43.477 \| good	0.61 \| good	4.976 \| good	0.109 \| good
2025-06-30T10:00:00.000Z	33 \| good	6.417 \| good	24.614 \| good	35.317 \| good	0.536 \| good	5.666 \| good	0.109 \| good
2025-06-30T11:00:00.000Z	33 \| good	5.801 \| good	24.482 \| good	29.673 \| good	0.464 \| good	7.823 \| good	0.109 \| good
2025-06-30T12:00:00.000Z	33 \| good	5.676 \| good	25.213 \| good	25.881 \| good	0.465 \| good	8.425 \| good	0.109 \| good
2025-06-30T13:00:00.000Z	33 \| good	5.955 \| good	26.651 \| good	26.366 \| good	0.465 \| good	10.604 \| good	0.1 \| good
2025-06-30T14:00:00.000Z	44 \| good	8.137 \| good	29.017 \| good	25.358 \| good	0.494 \| good	10.215 \| good	0.1 \| good
2025-06-30T15:00:00.000Z	38 \| good	7.392 \| good	28.542 \| good	23.943 \| good	0.839 \| good	15.194 \| good	0.181 \| good
2025-06-30T16:00:00.000Z	38 \| good	6.532 \| good	28.202 \| good	32.458 \| good	1.526 \| good	10.693 \| good	0.181 \| good
2025-06-30T17:00:00.000Z	38 \| good	6.601 \| good	21.443 \| good	34.59 \| good	1.365 \| good	9.487 \| good	0.174 \| good
2025-06-30T18:00:00.000Z	45 \| good	6.518 \| good	26.567 \| good	48.905 \| good	1.03 \| good	6.407 \| good	0.113 \| good
2025-06-30T19:00:00.000Z	52 \| moderate	9.667 \| good	26.151 \| good	51.268 \| good	0.885 \| good	6.865 \| good	0.113 \| good
2025-06-30T20:00:00.000Z	47 \| good	6.228 \| good	27.915 \| good	51.313 \| good	1.104 \| good	7.844 \| good	0.139 \| good
2025-06-30T21:00:00.000Z	50 \| good	4.932 \| good	20.008 \| good	54.194 \| good	1.152 \| good	7.288 \| good	0.1 \| good
2025-06-30T22:00:00.000Z	51 \| moderate	7.93 \| good	27.981 \| good	55.46 \| fine	1.048 \| good	5.37 \| good	0.1 \| good
2025-06-30T23:00:00.000Z	71 \| moderate	6.98 \| good	22.676 \| good	60.874 \| fine	1.554 \| good	5.892 \| good	0.1 \| good
2025-07-01T00:00:00.000Z	80 \| moderate	7.567 \| good	37.935 \| good	64.116 \| fine	1.304 \| good	5.441 \| good	0.1 \| good
2025-07-01T01:00:00.000Z	84 \| moderate	9.069 \| good	40.89 \| good	64.551 \| fine	0.918 \| good	5.224 \| good	0.1 \| good
2025-07-01T02:00:00.000Z	74 \| moderate	8.077 \| good	29.024 \| good	62.17 \| fine	1.056 \| good	5.765 \| good	0.1 \| good
2025-07-01T03:00:00.000Z	77 \| moderate	8.586 \| good	34.836 \| good	62.629 \| fine	1.012 \| good	5.382 \| good	0.1 \| good
2025-07-01T04:00:00.000Z	64 \| moderate	8.037 \| good	34.775 \| good	59.135 \| fine	0.993 \| good	7.584 \| good	0.1 \| good
2025-07-01T05:00:00.000Z	67 \| moderate	9.287 \| good	19.836 \| good	60.485 \| fine	0.93 \| good	8.326 \| good	0.132 \| good
2025-07-01T06:00:00.000Z	54 \| moderate	7.771 \| good	39.555 \| good	55.637 \| fine	0.811 \| good	7.485 \| good	0.132 \| good
2025-07-01T07:00:00.000Z	45 \| good	7.345 \| good	26.457 \| good	48.84 \| good	0.673 \| good	8.517 \| good	0.132 \| good
2025-07-01T08:00:00.000Z	44 \| good	8.141 \| good	32.443 \| good	47.885 \| good	0.738 \| good	7.352 \| good	0.1 \| good
2025-07-01T09:00:00.000Z	40 \| good	7.44 \| good	29.992 \| good	42.66 \| good	0.655 \| good	6.963 \| good	0.1 \| good
2025-07-01T10:00:00.000Z	49 \| good	9.126 \| good	33.279 \| good	30.556 \| good	0.465 \| good	6.39 \| good	0.1 \| good
2025-07-01T11:00:00.000Z	49 \| good	8.551 \| good	20.152 \| good	29.767 \| good	0.475 \| good	9.098 \| good	0.1 \| good
2025-07-01T12:00:00.000Z	44 \| good	7.58 \| good	25.904 \| good	31.271 \| good	0.467 \| good	14.423 \| good	0.1 \| good
2025-07-01T13:00:00.000Z	38 \| good	6.808 \| good	32.612 \| good	26.258 \| good	0.402 \| good	11.592 \| good	0.132 \| good
2025-07-01T14:00:00.000Z	38 \| good	6.893 \| good	31.493 \| good	24.763 \| good	0.411 \| good	13.524 \| good	0.183 \| good
2025-07-01T15:00:00.000Z	38 \| good	7.087 \| good	25.429 \| good	25.247 \| good	0.539 \| good	15.828 \| good	0.19 \| good
2025-07-01T16:00:00.000Z	41 \| good	7.321 \| good	44.018 \| good	26.936 \| good	0.816 \| good	13.745 \| good	0.206 \| good
2025-07-01T17:00:00.000Z	49 \| good	8.646 \| good	35.453 \| good	32.83 \| good	1.668 \| good	15.312 \| good	0.181 \| good
2025-07-01T18:00:00.000Z	35 \| good	6.245 \| good	26.877 \| good	37.7 \| good	1.683 \| good	11.781 \| good	0.181 \| good
2025-07-01T19:00:00.000Z	49 \| good	6.981 \| good	33.964 \| good	53.272 \| good	1.623 \| good	10.244 \| good	0.181 \| good
2025-07-01T20:00:00.000Z	42 \| good	6.934 \| good	31.402 \| good	45.42 \| good	1.021 \| good	7.365 \| good	0.158 \| good
2025-07-01T21:00:00.000Z	50 \| good	9.453 \| good	27.682 \| good	54.012 \| good	0.948 \| good	5.932 \| good	0.158 \| good
2025-07-01T22:00:00.000Z	61 \| moderate	6.665 \| good	32.567 \| good	57.894 \| fine	1.268 \| good	5.821 \| good	0.158 \| good
2025-07-01T23:00:00.000Z	67 \| moderate	9.349 \| good	41.191 \| good	60.046 \| fine	1.452 \| good	5.321 \| good	0.149 \| good
2025-07-02T00:00:00.000Z	74 \| moderate	8.812 \| good	50.248 \| good	62.283 \| fine	2.167 \| good	5.097 \| good	0.142 \| good
2025-07-02T01:00:00.000Z	84 \| moderate	10.288 \| good	44.676 \| good	64.922 \| fine	1.643 \| good	5.758 \| good	0.151 \| good
2025-07-02T01:00:00.000Z	43 \| good	7.145 \| good	28.55 \| good	46.359 \| good	0.902 \| good	5.324 \| good	0.214 \| good
2025-07-02T01:00:00.000Z	97 \| moderate	7.367 \| good	32.584 \| good	68.915 \| fine	0.407 \| good	1.262 \| good	0.142 \| good
2025-07-02T02:00:00.000Z	77 \| moderate	6.721 \| good	29.774 \| good	63.094 \| fine	0.397 \| good	1.878 \| good	0.144 \| good
2025-07-02T03:00:00.000Z	54 \| moderate	6.9 \| good	30.67 \| good	56.025 \| fine	0.387 \| good	2.495 \| good	0.147 \| good
2025-07-02T04:00:00.000Z	48 \| good	7.43 \| good	32.686 \| good	52.061 \| good	0.419 \| good	3.5 \| good	0.159 \| good
2025-07-02T05:00:00.000Z	46 \| good	7.546 \| good	33.232 \| good	49.788 \| good	0.45 \| good	4.504 \| good	0.17 \| good
2025-07-02T06:00:00.000Z	44 \| good	7.675 \| good	33.389 \| good	45.826 \| good	0.482 \| good	5.509 \| good	0.182 \| good
2025-07-02T07:00:00.000Z	44 \| good	7.744 \| good	34.198 \| good	39.427 \| good	0.483 \| good	5.858 \| good	0.187 \| good
2025-07-02T08:00:00.000Z	44 \| good	7.625 \| good	33.383 \| good	36.971 \| good	0.484 \| good	6.208 \| good	0.191 \| good
2025-07-02T09:00:00.000Z	44 \| good	8.086 \| good	35.378 \| good	33.861 \| good	0.485 \| good	6.558 \| good	0.196 \| good
2025-07-02T10:00:00.000Z	38 \| good	7.241 \| good	31.745 \| good	32.132 \| good	0.479 \| good	6.807 \| good	0.197 \| good
2025-07-02T11:00:00.000Z	38 \| good	6.715 \| good	29.865 \| good	30.861 \| good	0.473 \| good	7.056 \| good	0.198 \| good
2025-07-02T12:00:00.000Z	44 \| good	7.566 \| good	33.119 \| good	29.638 \| good	0.468 \| good	7.306 \| good	0.199 \| good
2025-07-02T13:00:00.000Z	38 \| good	7.391 \| good	32.692 \| good	27.923 \| good	0.501 \| good	6.27 \| good	0.197 \| good
2025-07-02T14:00:00.000Z	44 \| good	7.873 \| good	34.655 \| good	28.953 \| good	0.535 \| good	5.234 \| good	0.194 \| good
2025-07-02T15:00:00.000Z	44 \| good	7.722 \| good	33.978 \| good	32.584 \| good	0.569 \| good	4.198 \| good	0.192 \| good
2025-07-02T16:00:00.000Z	44 \| good	7.77 \| good	34.02 \| good	38.687 \| good	0.649 \| good	3.35 \| good	0.185 \| good
2025-07-02T17:00:00.000Z	43 \| good	7.269 \| good	31.838 \| good	45.61 \| good	0.729 \| good	2.502 \| good	0.178 \| good
2025-07-02T18:00:00.000Z	49 \| good	7.416 \| good	32.678 \| good	53.411 \| good	0.81 \| good	1.655 \| good	0.171 \| good
2025-07-02T19:00:00.000Z	64 \| moderate	7.017 \| good	31.061 \| good	59.45 \| fine	0.738 \| good	1.363 \| good	0.165 \| good
2025-07-02T20:00:00.000Z	77 \| moderate	7.349 \| good	32.136 \| good	63.417 \| fine	0.667 \| good	1.072 \| good	0.159 \| good
2025-07-02T21:00:00.000Z	87 \| moderate	6.848 \| good	30.066 \| good	65.724 \| fine	0.596 \| good	0.78 \| good	0.152 \| good
2025-07-02T22:00:00.000Z	93 \| moderate	6.734 \| good	29.987 \| good	68.129 \| fine	0.537 \| good	0.738 \| good	0.148 \| good
2025-07-02T23:00:00.000Z	90 \| moderate	6.742 \| good	29.975 \| good	67.242 \| fine	0.479 \| good	0.697 \| good	0.143 \| good
2025-07-03T00:00:00.000Z	87 \| moderate	6.036 \| good	26.921 \| good	65.579 \| fine	0.42 \| good	0.655 \| good	0.138 \| good
2025-07-03T01:00:00.000Z	87 \| moderate	6.48 \| good	29 \| good	65.874 \| fine	0.396 \| good	1.105 \| good	0.139 \| good
2025-07-03T02:00:00.000Z	71 \| moderate	6.559 \| good	29.148 \| good	60.609 \| fine	0.373 \| good	1.556 \| good	0.14 \| good
2025-07-03T03:00:00.000Z	51 \| moderate	7.118 \| good	31.605 \| good	54.956 \| good	0.349 \| good	2.006 \| good	0.141 \| good
2025-07-03T04:00:00.000Z	46 \| good	7.782 \| good	34.149 \| good	50.148 \| good	0.387 \| good	3.119 \| good	0.153 \| good
2025-07-03T05:00:00.000Z	44 \| good	7.902 \| good	34.502 \| good	47.668 \| good	0.424 \| good	4.232 \| good	0.165 \| good
2025-07-03T06:00:00.000Z	44 \| good	7.899 \| good	34.712 \| good	43.266 \| good	0.461 \| good	5.344 \| good	0.177 \| good
2025-07-03T07:00:00.000Z	44 \| good	7.897 \| good	35.075 \| good	38.359 \| good	0.461 \| good	5.895 \| good	0.185 \| good
2025-07-03T08:00:00.000Z	44 \| good	7.66 \| good	33.619 \| good	35.715 \| good	0.46 \| good	6.446 \| good	0.192 \| good
2025-07-03T09:00:00.000Z	38 \| good	7.279 \| good	31.743 \| good	33.641 \| good	0.46 \| good	6.997 \| good	0.2 \| good
2025-07-03T10:00:00.000Z	38 \| good	6.537 \| good	29.213 \| good	33.606 \| good	0.425 \| good	6.691 \| good	0.198 \| good
2025-07-03T11:00:00.000Z	33 \| good	6.074 \| good	26.435 \| good	33.255 \| good	0.391 \| good	6.386 \| good	0.196 \| good
2025-07-03T12:00:00.000Z	38 \| good	6.829 \| good	30.119 \| good	27.516 \| good	0.356 \| good	6.08 \| good	0.195 \| good
2025-07-03T13:00:00.000Z	33 \| good	6.121 \| good	26.603 \| good	26.777 \| good	0.388 \| good	5.253 \| good	0.193 \| good
2025-07-03T14:00:00.000Z	38 \| good	6.911 \| good	30.618 \| good	27.939 \| good	0.42 \| good	4.426 \| good	0.192 \| good
2025-07-03T15:00:00.000Z	38 \| good	6.836 \| good	30.55 \| good	33.475 \| good	0.452 \| good	3.599 \| good	0.191 \| good
2025-07-03T16:00:00.000Z	38 \| good	6.627 \| good	29.563 \| good	40.955 \| good	0.545 \| good	2.812 \| good	0.179 \| good
2025-07-03T17:00:00.000Z	44 \| good	7.03 \| good	31.265 \| good	47.561 \| good	0.639 \| good	2.025 \| good	0.167 \| good
2025-07-03T18:00:00.000Z	54 \| moderate	7.758 \| good	34.186 \| good	55.881 \| fine	0.733 \| good	1.239 \| good	0.154 \| good
2025-07-03T19:00:00.000Z	71 \| moderate	8.306 \| good	36.489 \| good	61.172 \| fine	0.658 \| good	1.027 \| good	0.144 \| good
2025-07-03T20:00:00.000Z	84 \| moderate	8.369 \| good	36.813 \| good	65.353 \| fine	0.584 \| good	0.816 \| good	0.133 \| good
2025-07-03T21:00:00.000Z	87 \| moderate	7.307 \| good	31.981 \| good	66.177 \| fine	0.51 \| good	0.605 \| good	0.123 \| good
2025-07-03T22:00:00.000Z	87 \| moderate	6.419 \| good	28.603 \| good	66.322 \| fine	0.441 \| good	0.574 \| good	0.111 \| good
2025-07-03T23:00:00.000Z	84 \| moderate	5.302 \| good	22.694 \| good	65.132 \| fine	0.372 \| good	0.543 \| good	0.099 \| good
2025-07-04T00:00:00.000Z	74 \| moderate	3.998 \| good	6.115 \| good	62.21 \| fine	0.301 \| good	0.518 \| good	0.087 \| good

Real-time air quality index in California, USA today

Major air pollutants in California, USA

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live California, USA air quality forecast and history

Get reliable air quality data to drive your business

California, USA air quality map: Stay updated on AQI near you

Air quality in cities of California, USA

Air quality in nearby states

Nevada, USA

Oregon, USA

Utah, USA

Arizona, USA

Idaho, USA

Nebraska, USA

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

How often is air quality information updated for California, USA?

What time in the last 24 hours was the air quality in California, USA at its worst?

When did California, USA experience the best air quality in the last 24 hours?

What is the AQI in California, USA right now?

What is the most common type of pollution in California, USA?

What should I do in case of poor air quality in California, USA?

What is the PM2.5 level in California, USA at the moment?

What is the PM10 level in California, USA at the moment?

What is the carbon monoxide (CO) level in California, USA at the moment?

What is the sulfur dioxide (SO2) level in California, USA at the moment?

What is the ozone (O3) level in California, USA at the moment?

What is the nitrogen dioxide (NO2) level in California, USA at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in California, USA at the moment?

What is the PM₁₀ level in California, USA at the moment?

What is the sulfur dioxide (SO₂) level in California, USA at the moment?

What is the ozone (O₃) level in California, USA at the moment?

What is the nitrogen dioxide (NO₂) level in California, USA at the moment?