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

The PM10 concentration in California, USA is 54.556 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 0.592 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 13.164 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 17.311 ppb.

Live air quality index in California, USA today

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

PM2.5 levels in California, USA are currently 16.836 μg/m3.

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)

Moderate

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)

17.36 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

56.76 μg/m³

155

255

425

605+

Ozone (O₃)

11.60 ppb

201

201+

Sulfur Dioxide (SO₂)

0.68 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

16.33 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.72 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
2025-12-05T10:00:00.000Z	22 \| good	4.401 \| good	5.216 \| good	10.743 \| good	0.335 \| good	9.274 \| good	0.235 \| good
2025-12-05T11:00:00.000Z	38 \| good	6.797 \| good	11.454 \| good	14.635 \| good	0.502 \| good	7.558 \| good	0.201 \| good
2025-12-05T12:00:00.000Z	27 \| good	4.621 \| good	15.245 \| good	15.274 \| good	0.433 \| good	8.748 \| good	0.201 \| good
2025-12-05T13:00:00.000Z	22 \| good	3.886 \| good	6.603 \| good	12.176 \| good	0.44 \| good	6.929 \| good	0.201 \| good
2025-12-05T14:00:00.000Z	27 \| good	5.066 \| good	6.545 \| good	13.147 \| good	0.463 \| good	7.933 \| good	0.197 \| good
2025-12-05T15:00:00.000Z	13 \| good	2.015 \| good	7.494 \| good	13.98 \| good	0.605 \| good	7.323 \| good	0.203 \| good
2025-12-05T16:00:00.000Z	52 \| moderate	10.454 \| good	17.119 \| good	14.415 \| good	0.495 \| good	7.968 \| good	0.212 \| good
2025-12-05T17:00:00.000Z	22 \| good	3.522 \| good	9.239 \| good	14.255 \| good	0.517 \| good	6.015 \| good	0.212 \| good
2025-12-05T18:00:00.000Z	75 \| moderate	21.771 \| fine	37.464 \| good	9.845 \| good	0.604 \| good	6.016 \| good	0.197 \| good
2025-12-05T19:00:00.000Z	71 \| moderate	19.567 \| fine	62.589 \| fine	11.067 \| good	0.612 \| good	5.702 \| good	0.206 \| good
2025-12-05T20:00:00.000Z	75 \| moderate	21.667 \| fine	39.054 \| good	12.918 \| good	0.589 \| good	5.867 \| good	0.206 \| good
2025-12-05T21:00:00.000Z	75 \| moderate	21.574 \| fine	37.234 \| good	20.84 \| good	0.454 \| good	6.387 \| good	0.206 \| good
2025-12-05T22:00:00.000Z	64 \| moderate	15.716 \| fine	39.187 \| good	19.58 \| good	0.433 \| good	6.808 \| good	0.206 \| good
2025-12-05T23:00:00.000Z	73 \| moderate	21.259 \| fine	45.465 \| good	18.416 \| good	0.267 \| good	6.562 \| good	0.206 \| good
2025-12-06T00:00:00.000Z	75 \| moderate	21.518 \| fine	62.991 \| fine	15.479 \| good	0.26 \| good	7.799 \| good	0.212 \| good
2025-12-06T01:00:00.000Z	75 \| moderate	21.598 \| fine	51.213 \| good	16.107 \| good	0.237 \| good	6.204 \| good	0.212 \| good
2025-12-06T02:00:00.000Z	77 \| moderate	22.605 \| fine	43.977 \| good	19.914 \| good	0.238 \| good	8.094 \| good	0.218 \| good
2025-12-06T03:00:00.000Z	64 \| moderate	15.817 \| fine	65.095 \| fine	19.754 \| good	0.301 \| good	10.908 \| good	0.296 \| good
2025-12-06T04:00:00.000Z	60 \| moderate	13.758 \| fine	64.327 \| fine	17.337 \| good	0.314 \| good	13.849 \| good	0.315 \| good
2025-12-06T05:00:00.000Z	54 \| moderate	10.834 \| good	51.419 \| good	14.438 \| good	0.453 \| good	11.366 \| good	0.422 \| good
2025-12-06T06:00:00.000Z	38 \| good	6.664 \| good	20.931 \| good	12.777 \| good	0.448 \| good	8.461 \| good	0.455 \| good
2025-12-06T07:00:00.000Z	49 \| good	8.692 \| good	30.866 \| good	14.65 \| good	0.478 \| good	8.775 \| good	0.6 \| good
2025-12-06T08:00:00.000Z	27 \| good	5.189 \| good	7.938 \| good	13.068 \| good	0.466 \| good	7.599 \| good	0.515 \| good
2025-12-06T09:00:00.000Z	27 \| good	5.49 \| good	29.111 \| good	15.276 \| good	0.39 \| good	10.564 \| good	0.382 \| good
2025-12-06T10:00:00.000Z	62 \| moderate	15.035 \| fine	21.431 \| good	16.866 \| good	0.68 \| good	11.722 \| good	0.406 \| good
2025-12-06T11:00:00.000Z	18 \| good	2.549 \| good	18.68 \| good	11.734 \| good	0.643 \| good	12.772 \| good	0.376 \| good
2025-12-06T12:00:00.000Z	16 \| good	3.088 \| good	12.298 \| good	16.06 \| good	0.431 \| good	12.672 \| good	0.323 \| good
2025-12-06T13:00:00.000Z	14 \| good	1.972 \| good	10.645 \| good	14.725 \| good	0.332 \| good	12.602 \| good	0.298 \| good
2025-12-06T14:00:00.000Z	16 \| good	1.514 \| good	6.814 \| good	16.712 \| good	0.383 \| good	10.928 \| good	0.359 \| good
2025-12-06T15:00:00.000Z	16 \| good	2.514 \| good	6.701 \| good	17.336 \| good	0.411 \| good	11.005 \| good	0.37 \| good
2025-12-06T16:00:00.000Z	11 \| good	1.647 \| good	8.778 \| good	10.699 \| good	0.338 \| good	10.528 \| good	0.365 \| good
2025-12-06T17:00:00.000Z	26 \| good	3.141 \| good	27.864 \| good	12.953 \| good	0.357 \| good	10.759 \| good	0.309 \| good
2025-12-06T18:00:00.000Z	38 \| good	7.078 \| good	20.942 \| good	14.659 \| good	0.361 \| good	6.637 \| good	0.252 \| good
2025-12-06T19:00:00.000Z	82 \| moderate	25.55 \| fine	44.101 \| good	13.666 \| good	0.409 \| good	6.253 \| good	0.251 \| good
2025-12-06T20:00:00.000Z	81 \| moderate	25.191 \| fine	48.662 \| good	14.852 \| good	0.389 \| good	6.43 \| good	0.265 \| good
2025-12-06T21:00:00.000Z	86 \| moderate	28.382 \| fine	47.112 \| good	12.408 \| good	0.413 \| good	9.771 \| good	0.27 \| good
2025-12-06T22:00:00.000Z	75 \| moderate	22.331 \| fine	63.198 \| fine	20.345 \| good	0.394 \| good	7.399 \| good	0.221 \| good
2025-12-06T23:00:00.000Z	56 \| moderate	11.97 \| good	24.133 \| good	18.274 \| good	0.316 \| good	7.363 \| good	0.215 \| good
2025-12-07T00:00:00.000Z	66 \| moderate	17.271 \| fine	22.627 \| good	13.609 \| good	0.306 \| good	8.339 \| good	0.218 \| good
2025-12-07T01:00:00.000Z	27 \| good	5 \| good	23.978 \| good	20.093 \| good	0.207 \| good	7.091 \| good	0.22 \| good
2025-12-07T02:00:00.000Z	82 \| moderate	26.141 \| fine	86.457 \| fine	16.288 \| good	0.208 \| good	7.126 \| good	0.22 \| good
2025-12-07T03:00:00.000Z	90 \| moderate	30.273 \| fine	85.525 \| fine	18.689 \| good	0.217 \| good	8.24 \| good	0.28 \| good
2025-12-07T04:00:00.000Z	82 \| moderate	25.877 \| fine	46.259 \| good	17.91 \| good	0.229 \| good	6.571 \| good	0.309 \| good
2025-12-07T05:00:00.000Z	88 \| moderate	28.94 \| fine	55.846 \| fine	20.052 \| good	0.203 \| good	6.435 \| good	0.314 \| good
2025-12-07T06:00:00.000Z	82 \| moderate	25.949 \| fine	43.543 \| good	16.614 \| good	0.193 \| good	5.562 \| good	0.286 \| good
2025-12-07T07:00:00.000Z	82 \| moderate	25.642 \| fine	36.669 \| good	14.231 \| good	0.182 \| good	5.392 \| good	0.231 \| good
2025-12-07T08:00:00.000Z	82 \| moderate	26.022 \| fine	55.027 \| fine	13.615 \| good	0.209 \| good	6.173 \| good	0.248 \| good
2025-12-07T09:00:00.000Z	66 \| moderate	17.363 \| fine	56.758 \| fine	11.602 \| good	0.675 \| good	16.33 \| good	0.719 \| good
2025-12-07T08:00:00.000Z	73 \| moderate	20.857 \| fine	91.704 \| fine	18.027 \| good	0.86 \| good	9.245 \| good	0.232 \| good
2025-12-07T09:00:00.000Z	71 \| moderate	19.676 \| fine	86.625 \| fine	18.828 \| good	0.773 \| good	8.466 \| good	0.22 \| good
2025-12-07T10:00:00.000Z	69 \| moderate	19.015 \| fine	84.336 \| fine	19.48 \| good	0.707 \| good	8.107 \| good	0.208 \| good
2025-12-07T11:00:00.000Z	66 \| moderate	17.274 \| fine	76.465 \| fine	18.748 \| good	0.641 \| good	7.749 \| good	0.196 \| good
2025-12-07T12:00:00.000Z	64 \| moderate	16.278 \| fine	72.752 \| fine	18.086 \| good	0.575 \| good	7.391 \| good	0.183 \| good
2025-12-07T13:00:00.000Z	62 \| moderate	15.199 \| fine	67.888 \| fine	18.376 \| good	0.591 \| good	7.511 \| good	0.185 \| good
2025-12-07T14:00:00.000Z	62 \| moderate	15.11 \| fine	67.812 \| fine	19.043 \| good	0.607 \| good	7.631 \| good	0.186 \| good
2025-12-07T15:00:00.000Z	58 \| moderate	13.289 \| fine	59.964 \| fine	19.283 \| good	0.624 \| good	7.752 \| good	0.187 \| good
2025-12-07T16:00:00.000Z	54 \| moderate	11.442 \| good	51.129 \| good	18.989 \| good	0.647 \| good	6.76 \| good	0.184 \| good
2025-12-07T17:00:00.000Z	60 \| moderate	14.071 \| fine	63.411 \| fine	21.801 \| good	0.671 \| good	5.767 \| good	0.18 \| good
2025-12-07T18:00:00.000Z	64 \| moderate	15.6 \| fine	69.211 \| fine	23.218 \| good	0.695 \| good	4.775 \| good	0.176 \| good
2025-12-07T19:00:00.000Z	66 \| moderate	17.286 \| fine	76.912 \| fine	22.598 \| good	0.862 \| good	4.413 \| good	0.181 \| good
2025-12-07T20:00:00.000Z	67 \| moderate	17.809 \| fine	78.989 \| fine	22.643 \| good	1.03 \| good	4.051 \| good	0.186 \| good
2025-12-07T21:00:00.000Z	66 \| moderate	16.874 \| fine	75.095 \| fine	23.784 \| good	1.198 \| good	3.689 \| good	0.191 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	17.347 \| fine	77.489 \| fine	22.272 \| good	1.228 \| good	4.771 \| good	0.204 \| good
2025-12-07T23:00:00.000Z	71 \| moderate	20.454 \| fine	89.783 \| fine	22.646 \| good	1.259 \| good	5.852 \| good	0.216 \| good
2025-12-08T00:00:00.000Z	75 \| moderate	22.026 \| fine	95.87 \| fine	21.088 \| good	1.289 \| good	6.934 \| good	0.229 \| good
2025-12-08T01:00:00.000Z	79 \| moderate	24.431 \| fine	107.175 \| fine	17.749 \| good	1.27 \| good	8.885 \| good	0.248 \| good
2025-12-08T02:00:00.000Z	81 \| moderate	24.759 \| fine	107.435 \| fine	17.124 \| good	1.251 \| good	10.837 \| good	0.268 \| good
2025-12-08T03:00:00.000Z	81 \| moderate	24.639 \| fine	107.07 \| fine	16.189 \| good	1.231 \| good	12.788 \| good	0.287 \| good
2025-12-08T04:00:00.000Z	81 \| moderate	25.146 \| fine	109.648 \| fine	15.546 \| good	1.211 \| good	11.769 \| good	0.281 \| good
2025-12-08T05:00:00.000Z	81 \| moderate	25.048 \| fine	109.503 \| fine	16.173 \| good	1.19 \| good	10.75 \| good	0.275 \| good
2025-12-08T06:00:00.000Z	75 \| moderate	22.099 \| fine	96.769 \| fine	16.619 \| good	1.17 \| good	9.731 \| good	0.27 \| good
2025-12-08T07:00:00.000Z	75 \| moderate	21.845 \| fine	96.411 \| fine	16.108 \| good	1.076 \| good	9.106 \| good	0.258 \| good
2025-12-08T08:00:00.000Z	69 \| moderate	19.268 \| fine	85.127 \| fine	17.38 \| good	0.983 \| good	8.481 \| good	0.246 \| good
2025-12-08T09:00:00.000Z	66 \| moderate	17.488 \| fine	77.164 \| fine	17.844 \| good	0.89 \| good	7.856 \| good	0.234 \| good
2025-12-08T10:00:00.000Z	66 \| moderate	16.87 \| fine	74.832 \| fine	19.33 \| good	0.789 \| good	7.624 \| good	0.216 \| good
2025-12-08T11:00:00.000Z	62 \| moderate	15.417 \| fine	68.819 \| fine	19.658 \| good	0.689 \| good	7.391 \| good	0.198 \| good
2025-12-08T12:00:00.000Z	62 \| moderate	15.009 \| fine	67.513 \| fine	20.373 \| good	0.588 \| good	7.158 \| good	0.179 \| good
2025-12-08T13:00:00.000Z	62 \| moderate	14.861 \| fine	66.921 \| fine	21.432 \| good	0.6 \| good	7.349 \| good	0.179 \| good
2025-12-08T14:00:00.000Z	62 \| moderate	14.619 \| fine	65.299 \| fine	22.757 \| good	0.611 \| good	7.54 \| good	0.178 \| good
2025-12-08T15:00:00.000Z	60 \| moderate	14.136 \| fine	62.848 \| fine	22.27 \| good	0.623 \| good	7.731 \| good	0.178 \| good
2025-12-08T16:00:00.000Z	62 \| moderate	14.574 \| fine	65.267 \| fine	22.447 \| good	0.728 \| good	6.645 \| good	0.181 \| good
2025-12-08T17:00:00.000Z	69 \| moderate	19.489 \| fine	85.677 \| fine	23.741 \| good	0.833 \| good	5.559 \| good	0.184 \| good
2025-12-08T18:00:00.000Z	75 \| moderate	22.427 \| fine	98.931 \| fine	22.771 \| good	0.939 \| good	4.473 \| good	0.188 \| good
2025-12-08T19:00:00.000Z	79 \| moderate	23.939 \| fine	105.102 \| fine	21.02 \| good	1.191 \| good	4.642 \| good	0.202 \| good
2025-12-08T20:00:00.000Z	79 \| moderate	24.497 \| fine	107.477 \| fine	20.722 \| good	1.443 \| good	4.812 \| good	0.216 \| good
2025-12-08T21:00:00.000Z	77 \| moderate	23.034 \| fine	101.116 \| fine	20.42 \| good	1.695 \| good	4.982 \| good	0.23 \| good
2025-12-08T22:00:00.000Z	77 \| moderate	22.572 \| fine	98.698 \| fine	20.974 \| good	1.713 \| good	6.569 \| good	0.244 \| good
2025-12-08T23:00:00.000Z	82 \| moderate	25.775 \| fine	112.569 \| fine	19.081 \| good	1.732 \| good	8.156 \| good	0.259 \| good
2025-12-09T00:00:00.000Z	82 \| moderate	26.108 \| fine	113.265 \| fine	18.599 \| good	1.751 \| good	9.743 \| good	0.273 \| good
2025-12-09T01:00:00.000Z	84 \| moderate	27.054 \| fine	117.26 \| fine	17.264 \| good	1.731 \| good	11.244 \| good	0.29 \| good
2025-12-09T02:00:00.000Z	86 \| moderate	28.303 \| fine	122.657 \| fine	17.304 \| good	1.712 \| good	12.744 \| good	0.307 \| good
2025-12-09T03:00:00.000Z	86 \| moderate	27.694 \| fine	120.311 \| fine	17.166 \| good	1.693 \| good	14.245 \| good	0.324 \| good
2025-12-09T04:00:00.000Z	86 \| moderate	27.904 \| fine	121.571 \| fine	17.865 \| good	1.672 \| good	13.305 \| good	0.309 \| good
2025-12-09T05:00:00.000Z	84 \| moderate	27.275 \| fine	118.57 \| fine	17.796 \| good	1.65 \| good	12.364 \| good	0.294 \| good
2025-12-09T06:00:00.000Z	69 \| moderate	18.942 \| fine	19.389 \| good	14.794 \| good	1.631 \| good	11.688 \| good	0.283 \| good
2025-12-09T07:00:00.000Z	81 \| moderate	25.041 \| fine	109.274 \| fine	19.532 \| good	1.513 \| good	10.805 \| good	0.266 \| 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
Auburn, California	56 Moderate	11.96μg/m³ Good	52.43μg/m³ Good	1.72ppb Good	0.39ppb Good	9.37ppb Good	0.31ppm Good
Avocado Heights, California	71 Moderate	19.77μg/m³ Fine	41.32μg/m³ Good	11.51ppb Good	0.79ppb Good	25.48ppb Good	0.63ppm Good
Baldwin Park, California	54 Moderate	10.67μg/m³ Good	21.33μg/m³ Good	16.75ppb Good	0.84ppb Good	30.15ppb Good	0.68ppm Good
Banning, California	38 Good	6.80μg/m³ Good	29.96μg/m³ Good	18.36ppb Good	0.83ppb Good	21.35ppb Good	0.63ppm Good
Bay Point, California	67 Moderate	17.51μg/m³ Fine	77.57μg/m³ Fine	10.28ppb Good	0.41ppb Good	8.34ppb Good	0.47ppm Good
Bell, California	79 Moderate	23.69μg/m³ Fine	98.39μg/m³ Fine	7.47ppb Good	0.80ppb Good	31.37ppb Good	2.07ppm Good
Beverly Hills, California	75 Moderate	22.37μg/m³ Fine	73.07μg/m³ Fine	3.06ppb Good	0.78ppb Good	33.70ppb Good	1.37ppm Good
Alamo, California	67 Moderate	18.02μg/m³ Fine	74.34μg/m³ Fine	9.12ppb Good	0.40ppb Good	9.43ppb Good	0.46ppm Good
American Canyon, California	60 Moderate	14.20μg/m³ Fine	63.04μg/m³ Fine	13.59ppb Good	0.45ppb Good	6.07ppb Good	0.42ppm Good
Antioch, California	69 Moderate	19.13μg/m³ Fine	73.79μg/m³ Fine	10.88ppb Good	0.51ppb Good	9.10ppb Good	0.40ppm Good
Arcata, California	22 Good	3.28μg/m³ Good	14.89μg/m³ Good	24.38ppb Good	0.35ppb Good	5.78ppb Good	0.44ppm Good
Arvin, California	60 Moderate	14.38μg/m³ Fine	33.14μg/m³ Good	14.57ppb Good	0.74ppb Good	13.90ppb Good	0.53ppm Good
Bellflower, California	67 Moderate	18.36μg/m³ Fine	82.77μg/m³ Fine	11.46ppb Good	0.84ppb Good	28.73ppb Good	2.00ppm Good
Ashland, California	64 Moderate	16.11μg/m³ Fine	61.49μg/m³ Fine	6.48ppb Good	0.43ppb Good	11.39ppb Good	0.46ppm Good
Atascadero, California	16 Good	2.95μg/m³ Good	13.40μg/m³ Good	17.16ppb Good	0.20ppb Good	7.71ppb Good	0.40ppm Good
Bell Gardens, California	81 Moderate	24.72μg/m³ Fine	97.53μg/m³ Fine	9.11ppb Good	0.81ppb Good	28.98ppb Good	1.88ppm Good
Berkeley, California	62 Moderate	14.57μg/m³ Fine	64.69μg/m³ Fine	4.89ppb Good	0.20ppb Good	12.26ppb Good	0.61ppm Good
Albany, California	60 Moderate	14.29μg/m³ Fine	63.34μg/m³ Fine	4.58ppb Good	0.21ppb Good	12.25ppb Good	0.63ppm Good
ArdenArcade, California	86 Moderate	28.18μg/m³ Fine	122.50μg/m³ Fine	10.98ppb Good	0.38ppb Good	3.72ppb Good	0.26ppm Good
Atwater, California	90 Moderate	29.97μg/m³ Fine	73.13μg/m³ Fine	12.88ppb Good	0.20ppb Good	9.20ppb Good	0.44ppm Good
Alhambra, California	64 Moderate	15.74μg/m³ Fine	40.28μg/m³ Good	5.86ppb Good	0.83ppb Good	35.92ppb Good	0.97ppm Good
Alum Rock, California	67 Moderate	17.95μg/m³ Fine	78.87μg/m³ Fine	4.22ppb Good	0.43ppb Good	18.53ppb Good	0.79ppm Good
Arcadia, California	66 Moderate	16.58μg/m³ Fine	36.62μg/m³ Good	9.23ppb Good	0.82ppb Good	30.36ppb Good	0.76ppm Good
Arroyo Grande, California	27 Good	4.87μg/m³ Good	18.77μg/m³ Good	28.68ppb Good	0.20ppb Good	2.13ppb Good	0.35ppm Good
Citrus, California	60 Moderate	13.57μg/m³ Fine	28.64μg/m³ Good	22.87ppb Good	0.90ppb Good	16.25ppb Good	0.43ppm Good
Bakersfield, California	97 Moderate	34.08μg/m³ Fine	53.46μg/m³ Good	9.52ppb Good	0.70ppb Good	13.60ppb Good	0.29ppm Good
Belmont, California	66 Moderate	16.82μg/m³ Fine	69.11μg/m³ Fine	5.75ppb Good	0.41ppb Good	13.49ppb Good	0.61ppm Good
Adelanto, California	69 Moderate	19.15μg/m³ Fine	67.69μg/m³ Fine	10.29ppb Good	0.89ppb Good	25.26ppb Good	0.83ppm Good
Agoura Hills, California	64 Moderate	15.71μg/m³ Fine	57.31μg/m³ Fine	10.45ppb Good	0.82ppb Good	23.30ppb Good	1.25ppm Good
Alameda, California	62 Moderate	15.32μg/m³ Fine	68.57μg/m³ Fine	6.44ppb Good	0.22ppb Good	14.00ppb Good	0.43ppm Good
Alpine, California	39 Good	5.94μg/m³ Good	19.07μg/m³ Good	41.93ppb Good	0.81ppb Good	22.82ppb Good	0.68ppm Good
Avenal, California	49 Good	9.05μg/m³ Good	13.31μg/m³ Good	26.73ppb Good	0.20ppb Good	4.83ppb Good	0.35ppm Good
Barstow, California	33 Good	5.70μg/m³ Good	26.01μg/m³ Good	6.01ppb Good	0.94ppb Good	8.41ppb Good	0.79ppm Good
Beaumont, California	64 Moderate	15.96μg/m³ Fine	74.09μg/m³ Fine	18.12ppb Good	0.83ppb Good	28.67ppb Good	0.69ppm Good
Benicia, California	67 Moderate	17.74μg/m³ Fine	78.55μg/m³ Fine	13.74ppb Good	0.86ppb Good	6.24ppb Good	0.47ppm Good
Big Bear City, California	75 Moderate	22.40μg/m³ Fine	99.27μg/m³ Fine	32.75ppb Good	0.90ppb Good	11.11ppb Good	0.75ppm Good
Blackhawk, California	71 Moderate	19.83μg/m³ Fine	93.70μg/m³ Fine	13.25ppb Good	0.40ppb Good	7.98ppb Good	0.39ppm Good
Aliso Viejo, California	56 Moderate	12.06μg/m³ Hazardous	20.15μg/m³ Good	18.77ppb Good	0.80ppb Good	29.86ppb Good	0.85ppm Good
Anaheim, California	64 Moderate	16.13μg/m³ Fine	36.24μg/m³ Good	19.12ppb Good	0.92ppb Good	31.13ppb Good	0.93ppm Good
Anderson, California	75 Moderate	21.71μg/m³ Fine	89.21μg/m³ Fine	4.60ppb Good	0.22ppb Good	4.72ppb Good	0.35ppm Good
Antelope, California	79 Moderate	23.72μg/m³ Fine	100.19μg/m³ Fine	8.10ppb Good	0.38ppb Good	4.61ppb Good	0.28ppm Good
Apple Valley, California	62 Moderate	15.29μg/m³ Fine	59.46μg/m³ Fine	13.79ppb Good	0.87ppb Good	22.82ppb Good	0.85ppm Good
Artesia, California	66 Moderate	16.92μg/m³ Fine	76.28μg/m³ Fine	11.67ppb Good	0.85ppb Good	27.89ppb Good	1.95ppm Good
Azusa, California	60 Moderate	13.57μg/m³ Fine	28.64μg/m³ Good	22.87ppb Good	0.90ppb Good	16.25ppb Good	0.43ppm Good
Bloomington, California	79 Moderate	24.25μg/m³ Fine	56.76μg/m³ Fine	9.90ppb Good	0.82ppb Good	33.74ppb Good	0.93ppm Good
Calimesa, California	56 Moderate	11.81μg/m³ Good	56.84μg/m³ Fine	23.44ppb Good	0.83ppb Good	23.23ppb Good	0.78ppm Good
Campbell, California	71 Moderate	19.71μg/m³ Fine	70.03μg/m³ Fine	4.31ppb Good	0.42ppb Good	15.15ppb Good	0.75ppm Good
Carlsbad, California	38 Good	6.65μg/m³ Good	14.68μg/m³ Good	26.18ppb Good	0.83ppb Good	24.53ppb Good	0.79ppm Good
Calabasas, California	81 Moderate	24.50μg/m³ Fine	58.32μg/m³ Fine	6.94ppb Good	0.75ppb Good	34.10ppb Good	1.30ppm Good
Camp Pendleton South, California	33 Good	6.05μg/m³ Good	13.27μg/m³ Good	26.11ppb Good	0.83ppb Good	23.98ppb Good	0.80ppm Good

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

0.17ppm

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 03:00:00 on 2025-12-07.

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 04:00:00 on 2025-12-06.

What is the AQI in California, USA right now?

As of now, the AQI in California, USA is 66, indicating Moderate conditions.

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

California, USA air has the highest levels of PM2.5.

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 16.836 μg/m³.

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

The PM₁₀ concentration in California, USA is 54.556 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 0.728 ppm.

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

Currently, California, USA has a sulfur dioxide (SO₂) concentration of 0.592 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 13.164 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 17.311 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T10:00:00.000Z	22 \| good	4.401 \| good	5.216 \| good	10.743 \| good	0.335 \| good	9.274 \| good	0.235 \| good
2025-12-05T11:00:00.000Z	38 \| good	6.797 \| good	11.454 \| good	14.635 \| good	0.502 \| good	7.558 \| good	0.201 \| good
2025-12-05T12:00:00.000Z	27 \| good	4.621 \| good	15.245 \| good	15.274 \| good	0.433 \| good	8.748 \| good	0.201 \| good
2025-12-05T13:00:00.000Z	22 \| good	3.886 \| good	6.603 \| good	12.176 \| good	0.44 \| good	6.929 \| good	0.201 \| good
2025-12-05T14:00:00.000Z	27 \| good	5.066 \| good	6.545 \| good	13.147 \| good	0.463 \| good	7.933 \| good	0.197 \| good
2025-12-05T15:00:00.000Z	13 \| good	2.015 \| good	7.494 \| good	13.98 \| good	0.605 \| good	7.323 \| good	0.203 \| good
2025-12-05T16:00:00.000Z	52 \| moderate	10.454 \| good	17.119 \| good	14.415 \| good	0.495 \| good	7.968 \| good	0.212 \| good
2025-12-05T17:00:00.000Z	22 \| good	3.522 \| good	9.239 \| good	14.255 \| good	0.517 \| good	6.015 \| good	0.212 \| good
2025-12-05T18:00:00.000Z	75 \| moderate	21.771 \| fine	37.464 \| good	9.845 \| good	0.604 \| good	6.016 \| good	0.197 \| good
2025-12-05T19:00:00.000Z	71 \| moderate	19.567 \| fine	62.589 \| fine	11.067 \| good	0.612 \| good	5.702 \| good	0.206 \| good
2025-12-05T20:00:00.000Z	75 \| moderate	21.667 \| fine	39.054 \| good	12.918 \| good	0.589 \| good	5.867 \| good	0.206 \| good
2025-12-05T21:00:00.000Z	75 \| moderate	21.574 \| fine	37.234 \| good	20.84 \| good	0.454 \| good	6.387 \| good	0.206 \| good
2025-12-05T22:00:00.000Z	64 \| moderate	15.716 \| fine	39.187 \| good	19.58 \| good	0.433 \| good	6.808 \| good	0.206 \| good
2025-12-05T23:00:00.000Z	73 \| moderate	21.259 \| fine	45.465 \| good	18.416 \| good	0.267 \| good	6.562 \| good	0.206 \| good
2025-12-06T00:00:00.000Z	75 \| moderate	21.518 \| fine	62.991 \| fine	15.479 \| good	0.26 \| good	7.799 \| good	0.212 \| good
2025-12-06T01:00:00.000Z	75 \| moderate	21.598 \| fine	51.213 \| good	16.107 \| good	0.237 \| good	6.204 \| good	0.212 \| good
2025-12-06T02:00:00.000Z	77 \| moderate	22.605 \| fine	43.977 \| good	19.914 \| good	0.238 \| good	8.094 \| good	0.218 \| good
2025-12-06T03:00:00.000Z	64 \| moderate	15.817 \| fine	65.095 \| fine	19.754 \| good	0.301 \| good	10.908 \| good	0.296 \| good
2025-12-06T04:00:00.000Z	60 \| moderate	13.758 \| fine	64.327 \| fine	17.337 \| good	0.314 \| good	13.849 \| good	0.315 \| good
2025-12-06T05:00:00.000Z	54 \| moderate	10.834 \| good	51.419 \| good	14.438 \| good	0.453 \| good	11.366 \| good	0.422 \| good
2025-12-06T06:00:00.000Z	38 \| good	6.664 \| good	20.931 \| good	12.777 \| good	0.448 \| good	8.461 \| good	0.455 \| good
2025-12-06T07:00:00.000Z	49 \| good	8.692 \| good	30.866 \| good	14.65 \| good	0.478 \| good	8.775 \| good	0.6 \| good
2025-12-06T08:00:00.000Z	27 \| good	5.189 \| good	7.938 \| good	13.068 \| good	0.466 \| good	7.599 \| good	0.515 \| good
2025-12-06T09:00:00.000Z	27 \| good	5.49 \| good	29.111 \| good	15.276 \| good	0.39 \| good	10.564 \| good	0.382 \| good
2025-12-06T10:00:00.000Z	62 \| moderate	15.035 \| fine	21.431 \| good	16.866 \| good	0.68 \| good	11.722 \| good	0.406 \| good
2025-12-06T11:00:00.000Z	18 \| good	2.549 \| good	18.68 \| good	11.734 \| good	0.643 \| good	12.772 \| good	0.376 \| good
2025-12-06T12:00:00.000Z	16 \| good	3.088 \| good	12.298 \| good	16.06 \| good	0.431 \| good	12.672 \| good	0.323 \| good
2025-12-06T13:00:00.000Z	14 \| good	1.972 \| good	10.645 \| good	14.725 \| good	0.332 \| good	12.602 \| good	0.298 \| good
2025-12-06T14:00:00.000Z	16 \| good	1.514 \| good	6.814 \| good	16.712 \| good	0.383 \| good	10.928 \| good	0.359 \| good
2025-12-06T15:00:00.000Z	16 \| good	2.514 \| good	6.701 \| good	17.336 \| good	0.411 \| good	11.005 \| good	0.37 \| good
2025-12-06T16:00:00.000Z	11 \| good	1.647 \| good	8.778 \| good	10.699 \| good	0.338 \| good	10.528 \| good	0.365 \| good
2025-12-06T17:00:00.000Z	26 \| good	3.141 \| good	27.864 \| good	12.953 \| good	0.357 \| good	10.759 \| good	0.309 \| good
2025-12-06T18:00:00.000Z	38 \| good	7.078 \| good	20.942 \| good	14.659 \| good	0.361 \| good	6.637 \| good	0.252 \| good
2025-12-06T19:00:00.000Z	82 \| moderate	25.55 \| fine	44.101 \| good	13.666 \| good	0.409 \| good	6.253 \| good	0.251 \| good
2025-12-06T20:00:00.000Z	81 \| moderate	25.191 \| fine	48.662 \| good	14.852 \| good	0.389 \| good	6.43 \| good	0.265 \| good
2025-12-06T21:00:00.000Z	86 \| moderate	28.382 \| fine	47.112 \| good	12.408 \| good	0.413 \| good	9.771 \| good	0.27 \| good
2025-12-06T22:00:00.000Z	75 \| moderate	22.331 \| fine	63.198 \| fine	20.345 \| good	0.394 \| good	7.399 \| good	0.221 \| good
2025-12-06T23:00:00.000Z	56 \| moderate	11.97 \| good	24.133 \| good	18.274 \| good	0.316 \| good	7.363 \| good	0.215 \| good
2025-12-07T00:00:00.000Z	66 \| moderate	17.271 \| fine	22.627 \| good	13.609 \| good	0.306 \| good	8.339 \| good	0.218 \| good
2025-12-07T01:00:00.000Z	27 \| good	5 \| good	23.978 \| good	20.093 \| good	0.207 \| good	7.091 \| good	0.22 \| good
2025-12-07T02:00:00.000Z	82 \| moderate	26.141 \| fine	86.457 \| fine	16.288 \| good	0.208 \| good	7.126 \| good	0.22 \| good
2025-12-07T03:00:00.000Z	90 \| moderate	30.273 \| fine	85.525 \| fine	18.689 \| good	0.217 \| good	8.24 \| good	0.28 \| good
2025-12-07T04:00:00.000Z	82 \| moderate	25.877 \| fine	46.259 \| good	17.91 \| good	0.229 \| good	6.571 \| good	0.309 \| good
2025-12-07T05:00:00.000Z	88 \| moderate	28.94 \| fine	55.846 \| fine	20.052 \| good	0.203 \| good	6.435 \| good	0.314 \| good
2025-12-07T06:00:00.000Z	82 \| moderate	25.949 \| fine	43.543 \| good	16.614 \| good	0.193 \| good	5.562 \| good	0.286 \| good
2025-12-07T07:00:00.000Z	82 \| moderate	25.642 \| fine	36.669 \| good	14.231 \| good	0.182 \| good	5.392 \| good	0.231 \| good
2025-12-07T08:00:00.000Z	82 \| moderate	26.022 \| fine	55.027 \| fine	13.615 \| good	0.209 \| good	6.173 \| good	0.248 \| good
2025-12-07T09:00:00.000Z	66 \| moderate	17.363 \| fine	56.758 \| fine	11.602 \| good	0.675 \| good	16.33 \| good	0.719 \| good
2025-12-07T08:00:00.000Z	73 \| moderate	20.857 \| fine	91.704 \| fine	18.027 \| good	0.86 \| good	9.245 \| good	0.232 \| good
2025-12-07T09:00:00.000Z	71 \| moderate	19.676 \| fine	86.625 \| fine	18.828 \| good	0.773 \| good	8.466 \| good	0.22 \| good
2025-12-07T10:00:00.000Z	69 \| moderate	19.015 \| fine	84.336 \| fine	19.48 \| good	0.707 \| good	8.107 \| good	0.208 \| good
2025-12-07T11:00:00.000Z	66 \| moderate	17.274 \| fine	76.465 \| fine	18.748 \| good	0.641 \| good	7.749 \| good	0.196 \| good
2025-12-07T12:00:00.000Z	64 \| moderate	16.278 \| fine	72.752 \| fine	18.086 \| good	0.575 \| good	7.391 \| good	0.183 \| good
2025-12-07T13:00:00.000Z	62 \| moderate	15.199 \| fine	67.888 \| fine	18.376 \| good	0.591 \| good	7.511 \| good	0.185 \| good
2025-12-07T14:00:00.000Z	62 \| moderate	15.11 \| fine	67.812 \| fine	19.043 \| good	0.607 \| good	7.631 \| good	0.186 \| good
2025-12-07T15:00:00.000Z	58 \| moderate	13.289 \| fine	59.964 \| fine	19.283 \| good	0.624 \| good	7.752 \| good	0.187 \| good
2025-12-07T16:00:00.000Z	54 \| moderate	11.442 \| good	51.129 \| good	18.989 \| good	0.647 \| good	6.76 \| good	0.184 \| good
2025-12-07T17:00:00.000Z	60 \| moderate	14.071 \| fine	63.411 \| fine	21.801 \| good	0.671 \| good	5.767 \| good	0.18 \| good
2025-12-07T18:00:00.000Z	64 \| moderate	15.6 \| fine	69.211 \| fine	23.218 \| good	0.695 \| good	4.775 \| good	0.176 \| good
2025-12-07T19:00:00.000Z	66 \| moderate	17.286 \| fine	76.912 \| fine	22.598 \| good	0.862 \| good	4.413 \| good	0.181 \| good
2025-12-07T20:00:00.000Z	67 \| moderate	17.809 \| fine	78.989 \| fine	22.643 \| good	1.03 \| good	4.051 \| good	0.186 \| good
2025-12-07T21:00:00.000Z	66 \| moderate	16.874 \| fine	75.095 \| fine	23.784 \| good	1.198 \| good	3.689 \| good	0.191 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	17.347 \| fine	77.489 \| fine	22.272 \| good	1.228 \| good	4.771 \| good	0.204 \| good
2025-12-07T23:00:00.000Z	71 \| moderate	20.454 \| fine	89.783 \| fine	22.646 \| good	1.259 \| good	5.852 \| good	0.216 \| good
2025-12-08T00:00:00.000Z	75 \| moderate	22.026 \| fine	95.87 \| fine	21.088 \| good	1.289 \| good	6.934 \| good	0.229 \| good
2025-12-08T01:00:00.000Z	79 \| moderate	24.431 \| fine	107.175 \| fine	17.749 \| good	1.27 \| good	8.885 \| good	0.248 \| good
2025-12-08T02:00:00.000Z	81 \| moderate	24.759 \| fine	107.435 \| fine	17.124 \| good	1.251 \| good	10.837 \| good	0.268 \| good
2025-12-08T03:00:00.000Z	81 \| moderate	24.639 \| fine	107.07 \| fine	16.189 \| good	1.231 \| good	12.788 \| good	0.287 \| good
2025-12-08T04:00:00.000Z	81 \| moderate	25.146 \| fine	109.648 \| fine	15.546 \| good	1.211 \| good	11.769 \| good	0.281 \| good
2025-12-08T05:00:00.000Z	81 \| moderate	25.048 \| fine	109.503 \| fine	16.173 \| good	1.19 \| good	10.75 \| good	0.275 \| good
2025-12-08T06:00:00.000Z	75 \| moderate	22.099 \| fine	96.769 \| fine	16.619 \| good	1.17 \| good	9.731 \| good	0.27 \| good
2025-12-08T07:00:00.000Z	75 \| moderate	21.845 \| fine	96.411 \| fine	16.108 \| good	1.076 \| good	9.106 \| good	0.258 \| good
2025-12-08T08:00:00.000Z	69 \| moderate	19.268 \| fine	85.127 \| fine	17.38 \| good	0.983 \| good	8.481 \| good	0.246 \| good
2025-12-08T09:00:00.000Z	66 \| moderate	17.488 \| fine	77.164 \| fine	17.844 \| good	0.89 \| good	7.856 \| good	0.234 \| good
2025-12-08T10:00:00.000Z	66 \| moderate	16.87 \| fine	74.832 \| fine	19.33 \| good	0.789 \| good	7.624 \| good	0.216 \| good
2025-12-08T11:00:00.000Z	62 \| moderate	15.417 \| fine	68.819 \| fine	19.658 \| good	0.689 \| good	7.391 \| good	0.198 \| good
2025-12-08T12:00:00.000Z	62 \| moderate	15.009 \| fine	67.513 \| fine	20.373 \| good	0.588 \| good	7.158 \| good	0.179 \| good
2025-12-08T13:00:00.000Z	62 \| moderate	14.861 \| fine	66.921 \| fine	21.432 \| good	0.6 \| good	7.349 \| good	0.179 \| good
2025-12-08T14:00:00.000Z	62 \| moderate	14.619 \| fine	65.299 \| fine	22.757 \| good	0.611 \| good	7.54 \| good	0.178 \| good
2025-12-08T15:00:00.000Z	60 \| moderate	14.136 \| fine	62.848 \| fine	22.27 \| good	0.623 \| good	7.731 \| good	0.178 \| good
2025-12-08T16:00:00.000Z	62 \| moderate	14.574 \| fine	65.267 \| fine	22.447 \| good	0.728 \| good	6.645 \| good	0.181 \| good
2025-12-08T17:00:00.000Z	69 \| moderate	19.489 \| fine	85.677 \| fine	23.741 \| good	0.833 \| good	5.559 \| good	0.184 \| good
2025-12-08T18:00:00.000Z	75 \| moderate	22.427 \| fine	98.931 \| fine	22.771 \| good	0.939 \| good	4.473 \| good	0.188 \| good
2025-12-08T19:00:00.000Z	79 \| moderate	23.939 \| fine	105.102 \| fine	21.02 \| good	1.191 \| good	4.642 \| good	0.202 \| good
2025-12-08T20:00:00.000Z	79 \| moderate	24.497 \| fine	107.477 \| fine	20.722 \| good	1.443 \| good	4.812 \| good	0.216 \| good
2025-12-08T21:00:00.000Z	77 \| moderate	23.034 \| fine	101.116 \| fine	20.42 \| good	1.695 \| good	4.982 \| good	0.23 \| good
2025-12-08T22:00:00.000Z	77 \| moderate	22.572 \| fine	98.698 \| fine	20.974 \| good	1.713 \| good	6.569 \| good	0.244 \| good
2025-12-08T23:00:00.000Z	82 \| moderate	25.775 \| fine	112.569 \| fine	19.081 \| good	1.732 \| good	8.156 \| good	0.259 \| good
2025-12-09T00:00:00.000Z	82 \| moderate	26.108 \| fine	113.265 \| fine	18.599 \| good	1.751 \| good	9.743 \| good	0.273 \| good
2025-12-09T01:00:00.000Z	84 \| moderate	27.054 \| fine	117.26 \| fine	17.264 \| good	1.731 \| good	11.244 \| good	0.29 \| good
2025-12-09T02:00:00.000Z	86 \| moderate	28.303 \| fine	122.657 \| fine	17.304 \| good	1.712 \| good	12.744 \| good	0.307 \| good
2025-12-09T03:00:00.000Z	86 \| moderate	27.694 \| fine	120.311 \| fine	17.166 \| good	1.693 \| good	14.245 \| good	0.324 \| good
2025-12-09T04:00:00.000Z	86 \| moderate	27.904 \| fine	121.571 \| fine	17.865 \| good	1.672 \| good	13.305 \| good	0.309 \| good
2025-12-09T05:00:00.000Z	84 \| moderate	27.275 \| fine	118.57 \| fine	17.796 \| good	1.65 \| good	12.364 \| good	0.294 \| good
2025-12-09T06:00:00.000Z	69 \| moderate	18.942 \| fine	19.389 \| good	14.794 \| good	1.631 \| good	11.688 \| good	0.283 \| good
2025-12-09T07:00:00.000Z	81 \| moderate	25.041 \| fine	109.274 \| fine	19.532 \| good	1.513 \| good	10.805 \| good	0.266 \| good

Live 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?