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

The PM10 concentration in Walnut, California is 41.127 μg/m3 at the moment.

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

Currently, Walnut, California has a sulfur dioxide (SO2) concentration of 0.399 ppb.

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

The current ozone (O3) level in Walnut, California at the moment is 36.393 ppm.

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

Nitrogen dioxide (NO2) level in Walnut, California at the moment is 8.414 ppb.

Real-time air quality index in Walnut, California today

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

Stay updated with real-time air quality in Walnut, California 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

Walnut, California

Last updated: ... (Local time)

Major air pollutants in Walnut, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

13.40 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

41.13 μg/m³

155

255

425

605+

Ozone (O₃)

36.39 ppb

201

201+

Sulfur Dioxide (SO₂)

0.40 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.41 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Walnut, California

Get Live Pollen Counts

Walnut, California

Scroll To Air Quality Map

Track live Walnut, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T00:00:00.000Z	60 \| moderate	13.861 \| fine	32.208 \| good	48.694 \| good	0.25 \| good	7.492 \| good	0.219 \| good
2025-06-05T01:00:00.000Z	58 \| moderate	13.363 \| fine	29.265 \| good	49.241 \| good	0.298 \| good	6.312 \| good	0.192 \| good
2025-06-05T02:00:00.000Z	52 \| moderate	9.647 \| good	26.069 \| good	45.843 \| good	0.435 \| good	6.017 \| good	0.165 \| good
2025-06-05T03:00:00.000Z	49 \| good	9.48 \| good	22.972 \| good	41.74 \| good	0.35 \| good	6.53 \| good	0.187 \| good
2025-06-05T04:00:00.000Z	49 \| good	8.929 \| good	21.204 \| good	38.101 \| good	0.326 \| good	7.107 \| good	0.187 \| good
2025-06-05T05:00:00.000Z	44 \| good	8.193 \| good	20.226 \| good	38.101 \| good	0.365 \| good	6.872 \| good	0.187 \| good
2025-06-05T06:00:00.000Z	54 \| moderate	10.767 \| good	27.717 \| good	30.048 \| good	0.33 \| good	7.61 \| good	0.193 \| good
2025-06-05T07:00:00.000Z	52 \| moderate	9.616 \| good	24.388 \| good	27.775 \| good	0.283 \| good	7.782 \| good	0.177 \| good
2025-06-05T08:00:00.000Z	49 \| good	8.731 \| good	24.803 \| good	27.353 \| good	0.284 \| good	5.794 \| good	0.172 \| good
2025-06-05T09:00:00.000Z	52 \| moderate	9.658 \| good	26.19 \| good	26.03 \| good	0.266 \| good	5.004 \| good	0.166 \| good
2025-06-05T10:00:00.000Z	49 \| good	8.774 \| good	24.825 \| good	27.179 \| good	0.411 \| good	4.618 \| good	0.161 \| good
2025-06-05T11:00:00.000Z	38 \| good	7.348 \| good	29.839 \| good	26.164 \| good	0.236 \| good	4.629 \| good	0.166 \| good
2025-06-05T12:00:00.000Z	49 \| good	8.855 \| good	28.823 \| good	27.617 \| good	0.221 \| good	4.039 \| good	0.172 \| good
2025-06-05T13:00:00.000Z	44 \| good	8.428 \| good	21.278 \| good	27.346 \| good	0.219 \| good	4.761 \| good	0.177 \| good
2025-06-05T14:00:00.000Z	33 \| good	6.215 \| good	16.657 \| good	26.967 \| good	0.201 \| good	5.148 \| good	0.165 \| good
2025-06-05T15:00:00.000Z	49 \| good	8.542 \| good	23.939 \| good	27.983 \| good	0.201 \| good	6.696 \| good	0.165 \| good
2025-06-05T16:00:00.000Z	49 \| good	8.738 \| good	24.337 \| good	29.029 \| good	0.253 \| good	8.983 \| good	0.192 \| good
2025-06-05T17:00:00.000Z	52 \| moderate	9.948 \| good	25.195 \| good	30.3 \| good	0.277 \| good	7.58 \| good	0.165 \| good
2025-06-05T18:00:00.000Z	54 \| moderate	10.985 \| good	30.274 \| good	31.754 \| good	0.291 \| good	7.091 \| good	0.216 \| good
2025-06-05T19:00:00.000Z	56 \| moderate	11.925 \| good	31.72 \| good	32.963 \| good	0.349 \| good	7.527 \| good	0.198 \| good
2025-06-05T20:00:00.000Z	56 \| moderate	11.918 \| good	37.507 \| good	36.656 \| good	0.409 \| good	7.906 \| good	0.232 \| good
2025-06-05T21:00:00.000Z	56 \| moderate	11.653 \| good	38.964 \| good	42.047 \| good	0.49 \| good	7.424 \| good	0.21 \| good
2025-06-05T22:00:00.000Z	54 \| moderate	10.858 \| good	31.996 \| good	44.36 \| good	0.315 \| good	8.574 \| good	0.192 \| good
2025-06-05T23:00:00.000Z	52 \| moderate	10.21 \| good	37.964 \| good	47.864 \| good	0.451 \| good	7.783 \| good	0.219 \| good
2025-06-06T00:00:00.000Z	49 \| good	8.91 \| good	31.807 \| good	49.249 \| good	0.559 \| good	6.35 \| good	0.192 \| good
2025-06-06T01:00:00.000Z	43 \| good	7.476 \| good	26.192 \| good	46.327 \| good	0.485 \| good	5.605 \| good	0.165 \| good
2025-06-06T02:00:00.000Z	44 \| good	8.127 \| good	23.001 \| good	41.537 \| good	0.496 \| good	6.042 \| good	0.187 \| good
2025-06-06T03:00:00.000Z	38 \| good	7.304 \| good	18.589 \| good	37.483 \| good	0.45 \| good	7.165 \| good	0.193 \| good
2025-06-06T04:00:00.000Z	33 \| good	5.565 \| good	21.643 \| good	34.847 \| good	0.318 \| good	8.106 \| good	0.165 \| good
2025-06-06T05:00:00.000Z	33 \| good	6.432 \| good	24.023 \| good	34.847 \| good	0.387 \| good	8.452 \| good	0.165 \| good
2025-06-06T06:00:00.000Z	33 \| good	5.834 \| good	22.176 \| good	30.43 \| good	0.339 \| good	8.268 \| good	0.165 \| good
2025-06-06T07:00:00.000Z	33 \| good	6.306 \| good	21.327 \| good	28.362 \| good	0.24 \| good	8.21 \| good	0.198 \| good
2025-06-06T08:00:00.000Z	38 \| good	6.915 \| good	19.533 \| good	28.382 \| good	0.283 \| good	6.872 \| good	0.155 \| good
2025-06-06T09:00:00.000Z	33 \| good	6.351 \| good	16.616 \| good	28.647 \| good	0.242 \| good	5.251 \| good	0.155 \| good
2025-06-06T10:00:00.000Z	33 \| good	6.29 \| good	16.942 \| good	26.514 \| good	0.247 \| good	5.043 \| good	0.166 \| good
2025-06-06T11:00:00.000Z	33 \| good	6.103 \| good	21.33 \| good	25.492 \| good	0.227 \| good	4.978 \| good	0.161 \| good
2025-06-06T12:00:00.000Z	38 \| good	6.564 \| good	20.756 \| good	24.786 \| good	0.203 \| good	4.879 \| good	0.172 \| good
2025-06-06T13:00:00.000Z	38 \| good	6.913 \| good	24.26 \| good	24.139 \| good	0.202 \| good	5.199 \| good	0.198 \| good
2025-06-06T14:00:00.000Z	44 \| good	7.704 \| good	29.444 \| good	24.514 \| good	0.2 \| good	5.861 \| good	0.165 \| good
2025-06-06T15:00:00.000Z	44 \| good	7.773 \| good	29.054 \| good	25.034 \| good	0.255 \| good	6.511 \| good	0.185 \| good
2025-06-06T16:00:00.000Z	49 \| good	8.707 \| good	30.497 \| good	27.32 \| good	0.311 \| good	7.879 \| good	0.202 \| good
2025-06-06T17:00:00.000Z	49 \| good	9.325 \| good	27.855 \| good	29.329 \| good	0.393 \| good	7.894 \| good	0.202 \| good
2025-06-06T18:00:00.000Z	52 \| moderate	10.318 \| good	35.433 \| good	29.989 \| good	0.485 \| good	9.32 \| good	0.24 \| good
2025-06-06T19:00:00.000Z	58 \| moderate	13.436 \| fine	35.88 \| good	32.554 \| good	0.395 \| good	9.292 \| good	0.24 \| good
2025-06-06T20:00:00.000Z	58 \| moderate	13.396 \| fine	41.127 \| good	36.393 \| good	0.399 \| good	8.414 \| good	0.24 \| good
2025-06-06T21:00:00.000Z	62 \| moderate	14.822 \| fine	50.475 \| good	40.693 \| good	0.439 \| good	9.013 \| good	0.229 \| good
2025-06-06T22:00:00.000Z	64 \| moderate	16.247 \| fine	39.395 \| good	46.441 \| good	0.298 \| good	8.575 \| good	0.219 \| good
2025-06-06T23:00:00.000Z	60 \| moderate	14.02 \| fine	41.207 \| good	50.243 \| good	0.449 \| good	7.445 \| good	0.219 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	13.396 \| fine	41.127 \| good	36.393 \| good	0.399 \| good	8.414 \| good	0.24 \| good
2025-06-06T22:00:00.000Z	77 \| moderate	12.112 \| fine	54.514 \| good	62.761 \| fine	2.705 \| good	3.909 \| good	0.139 \| good
2025-06-06T23:00:00.000Z	64 \| moderate	12.362 \| fine	55.506 \| fine	58.788 \| fine	3.213 \| good	4.377 \| good	0.147 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	12.522 \| fine	56.295 \| fine	52.233 \| good	3.722 \| good	4.845 \| good	0.155 \| good
2025-06-07T01:00:00.000Z	52 \| moderate	9.656 \| good	43.179 \| good	41.305 \| good	2.687 \| good	9.16 \| good	0.145 \| good
2025-06-07T02:00:00.000Z	52 \| moderate	9.77 \| good	43.381 \| good	30.108 \| good	3.155 \| good	10.017 \| good	0.153 \| good
2025-06-07T03:00:00.000Z	44 \| good	7.638 \| good	33.852 \| good	26.346 \| good	3.623 \| good	10.874 \| good	0.161 \| good
2025-06-07T04:00:00.000Z	49 \| good	8.984 \| good	39.538 \| good	23.161 \| good	3.168 \| good	13.521 \| good	0.153 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	9.871 \| good	43.444 \| good	21.968 \| good	3.504 \| good	14.762 \| good	0.161 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.656 \| good	33.52 \| good	20.359 \| good	3.84 \| good	16.003 \| good	0.169 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.468 \| good	32.931 \| good	20.291 \| good	3.695 \| good	14.437 \| good	0.153 \| good
2025-06-07T08:00:00.000Z	52 \| moderate	9.808 \| good	43.613 \| good	21.031 \| good	3.88 \| good	16.067 \| good	0.162 \| good
2025-06-07T09:00:00.000Z	44 \| good	7.617 \| good	33.86 \| good	21.242 \| good	4.064 \| good	17.697 \| good	0.172 \| good
2025-06-07T10:00:00.000Z	38 \| good	6.591 \| good	29.35 \| good	20.945 \| good	3.991 \| good	15.385 \| good	0.153 \| good
2025-06-07T11:00:00.000Z	49 \| good	8.696 \| good	38.666 \| good	20.458 \| good	4.084 \| good	17.372 \| good	0.162 \| good
2025-06-07T12:00:00.000Z	38 \| good	6.948 \| good	30.621 \| good	21.017 \| good	4.178 \| good	19.359 \| good	0.172 \| good
2025-06-07T13:00:00.000Z	44 \| good	8.256 \| good	36.464 \| good	19.266 \| good	4.386 \| good	10.684 \| good	0.161 \| good
2025-06-07T14:00:00.000Z	49 \| good	9.053 \| good	39.908 \| good	20.007 \| good	4.576 \| good	11.417 \| good	0.167 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	12.147 \| fine	53.943 \| good	21.773 \| good	4.766 \| good	12.15 \| good	0.172 \| good
2025-06-07T16:00:00.000Z	56 \| moderate	12.321 \| fine	55.856 \| fine	25.674 \| good	4.422 \| good	8.253 \| good	0.156 \| good
2025-06-07T17:00:00.000Z	62 \| moderate	14.646 \| fine	64.969 \| fine	29.548 \| good	4.706 \| good	9.191 \| good	0.163 \| good
2025-06-07T18:00:00.000Z	62 \| moderate	15.04 \| fine	67.124 \| fine	36.941 \| good	4.99 \| good	10.129 \| good	0.169 \| good
2025-06-07T19:00:00.000Z	66 \| moderate	17.377 \| fine	76.732 \| fine	47.652 \| good	3.343 \| good	4.656 \| good	0.138 \| good
2025-06-07T20:00:00.000Z	67 \| moderate	16.872 \| fine	75.453 \| fine	59.637 \| fine	3.83 \| good	5.551 \| good	0.146 \| good
2025-06-07T21:00:00.000Z	80 \| moderate	14.217 \| fine	63.345 \| fine	64.211 \| fine	4.317 \| good	6.445 \| good	0.153 \| good
2025-06-07T22:00:00.000Z	80 \| moderate	11.427 \| good	50.754 \| good	63.691 \| fine	2.47 \| good	3.978 \| good	0.129 \| good
2025-06-07T23:00:00.000Z	61 \| moderate	9.475 \| good	42.155 \| good	57.849 \| fine	2.928 \| good	4.525 \| good	0.136 \| good
2025-06-08T00:00:00.000Z	54 \| moderate	10.894 \| good	48.084 \| good	54.517 \| good	3.386 \| good	5.072 \| good	0.143 \| good
2025-06-08T01:00:00.000Z	49 \| good	9.158 \| good	41.145 \| good	48.661 \| good	2.478 \| good	9.983 \| good	0.141 \| good
2025-06-08T02:00:00.000Z	52 \| moderate	9.62 \| good	42.771 \| good	35.084 \| good	2.932 \| good	10.766 \| good	0.147 \| good
2025-06-08T03:00:00.000Z	49 \| good	9.464 \| good	42.165 \| good	31.483 \| good	3.386 \| good	11.548 \| good	0.154 \| good
2025-06-08T04:00:00.000Z	56 \| moderate	11.688 \| good	51.448 \| good	27.162 \| good	2.961 \| good	16.312 \| good	0.157 \| good
2025-06-08T05:00:00.000Z	52 \| moderate	10.395 \| good	46.217 \| good	23.46 \| good	3.334 \| good	17.592 \| good	0.165 \| good
2025-06-08T06:00:00.000Z	52 \| moderate	9.509 \| good	42.557 \| good	20.564 \| good	3.707 \| good	18.872 \| good	0.173 \| good
2025-06-08T07:00:00.000Z	52 \| moderate	9.986 \| good	44.319 \| good	18.696 \| good	3.152 \| good	20.076 \| good	0.171 \| good
2025-06-08T08:00:00.000Z	54 \| moderate	10.985 \| good	48.691 \| good	17.323 \| good	3.443 \| good	21.235 \| good	0.179 \| good
2025-06-08T09:00:00.000Z	49 \| good	9.274 \| good	41.324 \| good	16.656 \| good	3.735 \| good	22.394 \| good	0.186 \| good
2025-06-08T10:00:00.000Z	49 \| good	8.887 \| good	39.261 \| good	17.478 \| good	3.347 \| good	19.59 \| good	0.164 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.544 \| good	51.461 \| good	17.078 \| good	3.453 \| good	20.553 \| good	0.172 \| good
2025-06-08T12:00:00.000Z	49 \| good	8.942 \| good	39.749 \| good	21.185 \| good	3.56 \| good	21.516 \| good	0.18 \| good
2025-06-08T13:00:00.000Z	52 \| moderate	9.66 \| good	42.921 \| good	19.607 \| good	4.823 \| good	14.286 \| good	0.176 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	12.006 \| good	53.765 \| good	20.315 \| good	4.73 \| good	13.981 \| good	0.179 \| good
2025-06-08T15:00:00.000Z	62 \| moderate	15.211 \| fine	68.442 \| fine	23.198 \| good	4.638 \| good	13.676 \| good	0.183 \| good
2025-06-08T16:00:00.000Z	64 \| moderate	16.235 \| fine	71.824 \| fine	29.635 \| good	5.803 \| good	11.175 \| good	0.164 \| good
2025-06-08T17:00:00.000Z	66 \| moderate	17.013 \| fine	75.749 \| fine	38.697 \| good	5.708 \| good	11.596 \| good	0.17 \| good
2025-06-08T18:00:00.000Z	62 \| moderate	15.468 \| fine	68.662 \| fine	50.959 \| good	5.614 \| good	12.017 \| good	0.176 \| good
2025-06-08T19:00:00.000Z	67 \| moderate	14.03 \| fine	62.726 \| fine	60.002 \| fine	5.011 \| good	7.162 \| good	0.144 \| good
2025-06-08T20:00:00.000Z	90 \| moderate	14.475 \| fine	65.118 \| fine	66.971 \| fine	5.233 \| good	7.741 \| good	0.151 \| good
2025-06-08T21:00:00.000Z	93 \| moderate	13.335 \| fine	59.843 \| fine	67.637 \| fine	5.454 \| good	8.32 \| good	0.157 \| good

Walnut

Get reliable air quality data to drive your business

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

0.28ppm

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

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Frequently asked questions

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

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

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

In the past 24 hours, the air quality in Walnut, California was at its worst at 08:00:00 on 2025-06-06.

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

In the last 24 hours, the best air quality in Walnut, California was observed at 11:00:00 on 2025-06-06.

What is the AQI in Walnut, California right now?

As of now, the AQI in Walnut, California is 58, indicating Moderate conditions.

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

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

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

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

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

PM_2.5 levels in Walnut, California are currently 13.396 μg/m³.

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

The PM₁₀ concentration in Walnut, California is 41.127 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Walnut, California is 0.24 ppm.

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

Currently, Walnut, California has a sulfur dioxide (SO₂) concentration of 0.399 ppb.

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

The current ozone (O₃) level in Walnut, California at the moment is 36.393 ppm.

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

Nitrogen dioxide (NO₂) level in Walnut, California at the moment is 8.414 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T00:00:00.000Z	60 \| moderate	13.861 \| fine	32.208 \| good	48.694 \| good	0.25 \| good	7.492 \| good	0.219 \| good
2025-06-05T01:00:00.000Z	58 \| moderate	13.363 \| fine	29.265 \| good	49.241 \| good	0.298 \| good	6.312 \| good	0.192 \| good
2025-06-05T02:00:00.000Z	52 \| moderate	9.647 \| good	26.069 \| good	45.843 \| good	0.435 \| good	6.017 \| good	0.165 \| good
2025-06-05T03:00:00.000Z	49 \| good	9.48 \| good	22.972 \| good	41.74 \| good	0.35 \| good	6.53 \| good	0.187 \| good
2025-06-05T04:00:00.000Z	49 \| good	8.929 \| good	21.204 \| good	38.101 \| good	0.326 \| good	7.107 \| good	0.187 \| good
2025-06-05T05:00:00.000Z	44 \| good	8.193 \| good	20.226 \| good	38.101 \| good	0.365 \| good	6.872 \| good	0.187 \| good
2025-06-05T06:00:00.000Z	54 \| moderate	10.767 \| good	27.717 \| good	30.048 \| good	0.33 \| good	7.61 \| good	0.193 \| good
2025-06-05T07:00:00.000Z	52 \| moderate	9.616 \| good	24.388 \| good	27.775 \| good	0.283 \| good	7.782 \| good	0.177 \| good
2025-06-05T08:00:00.000Z	49 \| good	8.731 \| good	24.803 \| good	27.353 \| good	0.284 \| good	5.794 \| good	0.172 \| good
2025-06-05T09:00:00.000Z	52 \| moderate	9.658 \| good	26.19 \| good	26.03 \| good	0.266 \| good	5.004 \| good	0.166 \| good
2025-06-05T10:00:00.000Z	49 \| good	8.774 \| good	24.825 \| good	27.179 \| good	0.411 \| good	4.618 \| good	0.161 \| good
2025-06-05T11:00:00.000Z	38 \| good	7.348 \| good	29.839 \| good	26.164 \| good	0.236 \| good	4.629 \| good	0.166 \| good
2025-06-05T12:00:00.000Z	49 \| good	8.855 \| good	28.823 \| good	27.617 \| good	0.221 \| good	4.039 \| good	0.172 \| good
2025-06-05T13:00:00.000Z	44 \| good	8.428 \| good	21.278 \| good	27.346 \| good	0.219 \| good	4.761 \| good	0.177 \| good
2025-06-05T14:00:00.000Z	33 \| good	6.215 \| good	16.657 \| good	26.967 \| good	0.201 \| good	5.148 \| good	0.165 \| good
2025-06-05T15:00:00.000Z	49 \| good	8.542 \| good	23.939 \| good	27.983 \| good	0.201 \| good	6.696 \| good	0.165 \| good
2025-06-05T16:00:00.000Z	49 \| good	8.738 \| good	24.337 \| good	29.029 \| good	0.253 \| good	8.983 \| good	0.192 \| good
2025-06-05T17:00:00.000Z	52 \| moderate	9.948 \| good	25.195 \| good	30.3 \| good	0.277 \| good	7.58 \| good	0.165 \| good
2025-06-05T18:00:00.000Z	54 \| moderate	10.985 \| good	30.274 \| good	31.754 \| good	0.291 \| good	7.091 \| good	0.216 \| good
2025-06-05T19:00:00.000Z	56 \| moderate	11.925 \| good	31.72 \| good	32.963 \| good	0.349 \| good	7.527 \| good	0.198 \| good
2025-06-05T20:00:00.000Z	56 \| moderate	11.918 \| good	37.507 \| good	36.656 \| good	0.409 \| good	7.906 \| good	0.232 \| good
2025-06-05T21:00:00.000Z	56 \| moderate	11.653 \| good	38.964 \| good	42.047 \| good	0.49 \| good	7.424 \| good	0.21 \| good
2025-06-05T22:00:00.000Z	54 \| moderate	10.858 \| good	31.996 \| good	44.36 \| good	0.315 \| good	8.574 \| good	0.192 \| good
2025-06-05T23:00:00.000Z	52 \| moderate	10.21 \| good	37.964 \| good	47.864 \| good	0.451 \| good	7.783 \| good	0.219 \| good
2025-06-06T00:00:00.000Z	49 \| good	8.91 \| good	31.807 \| good	49.249 \| good	0.559 \| good	6.35 \| good	0.192 \| good
2025-06-06T01:00:00.000Z	43 \| good	7.476 \| good	26.192 \| good	46.327 \| good	0.485 \| good	5.605 \| good	0.165 \| good
2025-06-06T02:00:00.000Z	44 \| good	8.127 \| good	23.001 \| good	41.537 \| good	0.496 \| good	6.042 \| good	0.187 \| good
2025-06-06T03:00:00.000Z	38 \| good	7.304 \| good	18.589 \| good	37.483 \| good	0.45 \| good	7.165 \| good	0.193 \| good
2025-06-06T04:00:00.000Z	33 \| good	5.565 \| good	21.643 \| good	34.847 \| good	0.318 \| good	8.106 \| good	0.165 \| good
2025-06-06T05:00:00.000Z	33 \| good	6.432 \| good	24.023 \| good	34.847 \| good	0.387 \| good	8.452 \| good	0.165 \| good
2025-06-06T06:00:00.000Z	33 \| good	5.834 \| good	22.176 \| good	30.43 \| good	0.339 \| good	8.268 \| good	0.165 \| good
2025-06-06T07:00:00.000Z	33 \| good	6.306 \| good	21.327 \| good	28.362 \| good	0.24 \| good	8.21 \| good	0.198 \| good
2025-06-06T08:00:00.000Z	38 \| good	6.915 \| good	19.533 \| good	28.382 \| good	0.283 \| good	6.872 \| good	0.155 \| good
2025-06-06T09:00:00.000Z	33 \| good	6.351 \| good	16.616 \| good	28.647 \| good	0.242 \| good	5.251 \| good	0.155 \| good
2025-06-06T10:00:00.000Z	33 \| good	6.29 \| good	16.942 \| good	26.514 \| good	0.247 \| good	5.043 \| good	0.166 \| good
2025-06-06T11:00:00.000Z	33 \| good	6.103 \| good	21.33 \| good	25.492 \| good	0.227 \| good	4.978 \| good	0.161 \| good
2025-06-06T12:00:00.000Z	38 \| good	6.564 \| good	20.756 \| good	24.786 \| good	0.203 \| good	4.879 \| good	0.172 \| good
2025-06-06T13:00:00.000Z	38 \| good	6.913 \| good	24.26 \| good	24.139 \| good	0.202 \| good	5.199 \| good	0.198 \| good
2025-06-06T14:00:00.000Z	44 \| good	7.704 \| good	29.444 \| good	24.514 \| good	0.2 \| good	5.861 \| good	0.165 \| good
2025-06-06T15:00:00.000Z	44 \| good	7.773 \| good	29.054 \| good	25.034 \| good	0.255 \| good	6.511 \| good	0.185 \| good
2025-06-06T16:00:00.000Z	49 \| good	8.707 \| good	30.497 \| good	27.32 \| good	0.311 \| good	7.879 \| good	0.202 \| good
2025-06-06T17:00:00.000Z	49 \| good	9.325 \| good	27.855 \| good	29.329 \| good	0.393 \| good	7.894 \| good	0.202 \| good
2025-06-06T18:00:00.000Z	52 \| moderate	10.318 \| good	35.433 \| good	29.989 \| good	0.485 \| good	9.32 \| good	0.24 \| good
2025-06-06T19:00:00.000Z	58 \| moderate	13.436 \| fine	35.88 \| good	32.554 \| good	0.395 \| good	9.292 \| good	0.24 \| good
2025-06-06T20:00:00.000Z	58 \| moderate	13.396 \| fine	41.127 \| good	36.393 \| good	0.399 \| good	8.414 \| good	0.24 \| good
2025-06-06T21:00:00.000Z	62 \| moderate	14.822 \| fine	50.475 \| good	40.693 \| good	0.439 \| good	9.013 \| good	0.229 \| good
2025-06-06T22:00:00.000Z	64 \| moderate	16.247 \| fine	39.395 \| good	46.441 \| good	0.298 \| good	8.575 \| good	0.219 \| good
2025-06-06T23:00:00.000Z	60 \| moderate	14.02 \| fine	41.207 \| good	50.243 \| good	0.449 \| good	7.445 \| good	0.219 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	13.396 \| fine	41.127 \| good	36.393 \| good	0.399 \| good	8.414 \| good	0.24 \| good
2025-06-06T22:00:00.000Z	77 \| moderate	12.112 \| fine	54.514 \| good	62.761 \| fine	2.705 \| good	3.909 \| good	0.139 \| good
2025-06-06T23:00:00.000Z	64 \| moderate	12.362 \| fine	55.506 \| fine	58.788 \| fine	3.213 \| good	4.377 \| good	0.147 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	12.522 \| fine	56.295 \| fine	52.233 \| good	3.722 \| good	4.845 \| good	0.155 \| good
2025-06-07T01:00:00.000Z	52 \| moderate	9.656 \| good	43.179 \| good	41.305 \| good	2.687 \| good	9.16 \| good	0.145 \| good
2025-06-07T02:00:00.000Z	52 \| moderate	9.77 \| good	43.381 \| good	30.108 \| good	3.155 \| good	10.017 \| good	0.153 \| good
2025-06-07T03:00:00.000Z	44 \| good	7.638 \| good	33.852 \| good	26.346 \| good	3.623 \| good	10.874 \| good	0.161 \| good
2025-06-07T04:00:00.000Z	49 \| good	8.984 \| good	39.538 \| good	23.161 \| good	3.168 \| good	13.521 \| good	0.153 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	9.871 \| good	43.444 \| good	21.968 \| good	3.504 \| good	14.762 \| good	0.161 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.656 \| good	33.52 \| good	20.359 \| good	3.84 \| good	16.003 \| good	0.169 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.468 \| good	32.931 \| good	20.291 \| good	3.695 \| good	14.437 \| good	0.153 \| good
2025-06-07T08:00:00.000Z	52 \| moderate	9.808 \| good	43.613 \| good	21.031 \| good	3.88 \| good	16.067 \| good	0.162 \| good
2025-06-07T09:00:00.000Z	44 \| good	7.617 \| good	33.86 \| good	21.242 \| good	4.064 \| good	17.697 \| good	0.172 \| good
2025-06-07T10:00:00.000Z	38 \| good	6.591 \| good	29.35 \| good	20.945 \| good	3.991 \| good	15.385 \| good	0.153 \| good
2025-06-07T11:00:00.000Z	49 \| good	8.696 \| good	38.666 \| good	20.458 \| good	4.084 \| good	17.372 \| good	0.162 \| good
2025-06-07T12:00:00.000Z	38 \| good	6.948 \| good	30.621 \| good	21.017 \| good	4.178 \| good	19.359 \| good	0.172 \| good
2025-06-07T13:00:00.000Z	44 \| good	8.256 \| good	36.464 \| good	19.266 \| good	4.386 \| good	10.684 \| good	0.161 \| good
2025-06-07T14:00:00.000Z	49 \| good	9.053 \| good	39.908 \| good	20.007 \| good	4.576 \| good	11.417 \| good	0.167 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	12.147 \| fine	53.943 \| good	21.773 \| good	4.766 \| good	12.15 \| good	0.172 \| good
2025-06-07T16:00:00.000Z	56 \| moderate	12.321 \| fine	55.856 \| fine	25.674 \| good	4.422 \| good	8.253 \| good	0.156 \| good
2025-06-07T17:00:00.000Z	62 \| moderate	14.646 \| fine	64.969 \| fine	29.548 \| good	4.706 \| good	9.191 \| good	0.163 \| good
2025-06-07T18:00:00.000Z	62 \| moderate	15.04 \| fine	67.124 \| fine	36.941 \| good	4.99 \| good	10.129 \| good	0.169 \| good
2025-06-07T19:00:00.000Z	66 \| moderate	17.377 \| fine	76.732 \| fine	47.652 \| good	3.343 \| good	4.656 \| good	0.138 \| good
2025-06-07T20:00:00.000Z	67 \| moderate	16.872 \| fine	75.453 \| fine	59.637 \| fine	3.83 \| good	5.551 \| good	0.146 \| good
2025-06-07T21:00:00.000Z	80 \| moderate	14.217 \| fine	63.345 \| fine	64.211 \| fine	4.317 \| good	6.445 \| good	0.153 \| good
2025-06-07T22:00:00.000Z	80 \| moderate	11.427 \| good	50.754 \| good	63.691 \| fine	2.47 \| good	3.978 \| good	0.129 \| good
2025-06-07T23:00:00.000Z	61 \| moderate	9.475 \| good	42.155 \| good	57.849 \| fine	2.928 \| good	4.525 \| good	0.136 \| good
2025-06-08T00:00:00.000Z	54 \| moderate	10.894 \| good	48.084 \| good	54.517 \| good	3.386 \| good	5.072 \| good	0.143 \| good
2025-06-08T01:00:00.000Z	49 \| good	9.158 \| good	41.145 \| good	48.661 \| good	2.478 \| good	9.983 \| good	0.141 \| good
2025-06-08T02:00:00.000Z	52 \| moderate	9.62 \| good	42.771 \| good	35.084 \| good	2.932 \| good	10.766 \| good	0.147 \| good
2025-06-08T03:00:00.000Z	49 \| good	9.464 \| good	42.165 \| good	31.483 \| good	3.386 \| good	11.548 \| good	0.154 \| good
2025-06-08T04:00:00.000Z	56 \| moderate	11.688 \| good	51.448 \| good	27.162 \| good	2.961 \| good	16.312 \| good	0.157 \| good
2025-06-08T05:00:00.000Z	52 \| moderate	10.395 \| good	46.217 \| good	23.46 \| good	3.334 \| good	17.592 \| good	0.165 \| good
2025-06-08T06:00:00.000Z	52 \| moderate	9.509 \| good	42.557 \| good	20.564 \| good	3.707 \| good	18.872 \| good	0.173 \| good
2025-06-08T07:00:00.000Z	52 \| moderate	9.986 \| good	44.319 \| good	18.696 \| good	3.152 \| good	20.076 \| good	0.171 \| good
2025-06-08T08:00:00.000Z	54 \| moderate	10.985 \| good	48.691 \| good	17.323 \| good	3.443 \| good	21.235 \| good	0.179 \| good
2025-06-08T09:00:00.000Z	49 \| good	9.274 \| good	41.324 \| good	16.656 \| good	3.735 \| good	22.394 \| good	0.186 \| good
2025-06-08T10:00:00.000Z	49 \| good	8.887 \| good	39.261 \| good	17.478 \| good	3.347 \| good	19.59 \| good	0.164 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.544 \| good	51.461 \| good	17.078 \| good	3.453 \| good	20.553 \| good	0.172 \| good
2025-06-08T12:00:00.000Z	49 \| good	8.942 \| good	39.749 \| good	21.185 \| good	3.56 \| good	21.516 \| good	0.18 \| good
2025-06-08T13:00:00.000Z	52 \| moderate	9.66 \| good	42.921 \| good	19.607 \| good	4.823 \| good	14.286 \| good	0.176 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	12.006 \| good	53.765 \| good	20.315 \| good	4.73 \| good	13.981 \| good	0.179 \| good
2025-06-08T15:00:00.000Z	62 \| moderate	15.211 \| fine	68.442 \| fine	23.198 \| good	4.638 \| good	13.676 \| good	0.183 \| good
2025-06-08T16:00:00.000Z	64 \| moderate	16.235 \| fine	71.824 \| fine	29.635 \| good	5.803 \| good	11.175 \| good	0.164 \| good
2025-06-08T17:00:00.000Z	66 \| moderate	17.013 \| fine	75.749 \| fine	38.697 \| good	5.708 \| good	11.596 \| good	0.17 \| good
2025-06-08T18:00:00.000Z	62 \| moderate	15.468 \| fine	68.662 \| fine	50.959 \| good	5.614 \| good	12.017 \| good	0.176 \| good
2025-06-08T19:00:00.000Z	67 \| moderate	14.03 \| fine	62.726 \| fine	60.002 \| fine	5.011 \| good	7.162 \| good	0.144 \| good
2025-06-08T20:00:00.000Z	90 \| moderate	14.475 \| fine	65.118 \| fine	66.971 \| fine	5.233 \| good	7.741 \| good	0.151 \| good
2025-06-08T21:00:00.000Z	93 \| moderate	13.335 \| fine	59.843 \| fine	67.637 \| fine	5.454 \| good	8.32 \| good	0.157 \| good

Real-time air quality index in Walnut, California today

Major air pollutants in Walnut, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Walnut, California air quality forecast and history

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

Air quality in nearby cities

South San Jose Hills, California

Diamond Bar, California

Rowland Heights, California

Valinda, California

La Puente, California

Covina, California

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Air quality levels in US

Frequently asked questions

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

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

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

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

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

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

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

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

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

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