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

The PM10 concentration in Walnut, California is 20.269 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 0.673 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 4.066 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 6.596 ppb.

Live air quality index in Walnut, California today

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

PM2.5 levels in Walnut, California are currently 5.158 μg/m3.

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)

Good

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)

5.30 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.27 μg/m³

155

255

425

605+

Ozone (O₃)

4.07 ppb

201

201+

Sulfur Dioxide (SO₂)

0.65 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.60 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.51 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-09-05T14:00:00.000Z	29 \| good	4.237 \| good	14.667 \| good	30.685 \| good	0.531 \| good	5.403 \| good	0.517 \| good
2026-09-05T15:00:00.000Z	25 \| good	3.488 \| good	13.416 \| good	27.423 \| good	0.747 \| good	6.929 \| good	0.509 \| good
2026-09-05T16:00:00.000Z	30 \| good	3.248 \| good	16.551 \| good	32.437 \| good	0.677 \| good	8.225 \| good	0.455 \| good
2026-09-05T17:00:00.000Z	31 \| good	3.706 \| good	23.646 \| good	34.436 \| good	0.612 \| good	12.265 \| good	0.378 \| good
2026-09-05T18:00:00.000Z	36 \| good	5.703 \| good	27.412 \| good	39.093 \| good	0.588 \| good	14.352 \| good	0.386 \| good
2026-09-05T19:00:00.000Z	40 \| good	6.906 \| good	26.979 \| good	43.454 \| good	0.582 \| good	9.952 \| good	0.335 \| good
2026-09-05T20:00:00.000Z	43 \| good	5.544 \| good	19.648 \| good	45.972 \| good	0.562 \| good	4.388 \| good	0.291 \| good
2026-09-05T21:00:00.000Z	45 \| good	3.095 \| good	15.719 \| good	49.434 \| good	0.532 \| good	3.658 \| good	0.319 \| good
2026-09-05T22:00:00.000Z	47 \| good	2.407 \| good	13.805 \| good	50.562 \| good	0.479 \| good	3.068 \| good	0.291 \| good
2026-09-05T23:00:00.000Z	49 \| good	1.874 \| good	15.485 \| good	52.998 \| good	0.665 \| good	3.031 \| good	0.316 \| good
2026-09-06T00:00:00.000Z	47 \| good	0.557 \| good	16.579 \| good	50.851 \| good	0.737 \| good	3.527 \| good	0.308 \| good
2026-09-06T01:00:00.000Z	44 \| good	1.651 \| good	14.142 \| good	47.766 \| good	0.736 \| good	4.312 \| good	0.339 \| good
2026-09-06T02:00:00.000Z	41 \| good	2.648 \| good	14.089 \| good	44.094 \| good	0.665 \| good	5.264 \| good	0.366 \| good
2026-09-06T03:00:00.000Z	30 \| good	2.403 \| good	10.647 \| good	31.875 \| good	1.401 \| good	7.775 \| good	0.141 \| good
2026-09-06T04:00:00.000Z	33 \| good	5.521 \| good	21.843 \| good	35.17 \| good	0.551 \| good	10.399 \| good	0.427 \| good
2026-09-06T05:00:00.000Z	38 \| good	6.637 \| good	21.266 \| good	31.493 \| good	0.78 \| good	8.961 \| good	0.501 \| good
2026-09-06T06:00:00.000Z	33 \| good	5.977 \| good	21.261 \| good	29.268 \| good	0.576 \| good	9.359 \| good	0.525 \| good
2026-09-06T07:00:00.000Z	33 \| good	5.978 \| good	21.023 \| good	29.268 \| good	0.56 \| good	9.359 \| good	0.531 \| good
2026-09-06T08:00:00.000Z	44 \| good	8.291 \| good	23.143 \| good	26.681 \| good	0.574 \| good	9.298 \| good	0.575 \| good
2026-09-06T09:00:00.000Z	33 \| good	6.333 \| good	18.798 \| good	26.032 \| good	0.708 \| good	8.723 \| good	0.476 \| good
2026-09-06T10:00:00.000Z	33 \| good	6.268 \| good	18.551 \| good	24.479 \| good	0.709 \| good	8.723 \| good	0.476 \| good
2026-09-06T11:00:00.000Z	33 \| good	5.998 \| good	17.487 \| good	24.479 \| good	0.709 \| good	8.723 \| good	0.476 \| good
2026-09-06T12:00:00.000Z	38 \| good	6.897 \| good	17.575 \| good	19.819 \| good	0.547 \| good	6.647 \| good	0.46 \| good
2026-09-06T13:00:00.000Z	38 \| good	6.892 \| good	17.279 \| good	19.819 \| good	0.547 \| good	6.647 \| good	0.46 \| good
2026-09-06T14:00:00.000Z	38 \| good	7.13 \| good	23.242 \| good	18.48 \| good	0.471 \| good	5.171 \| good	0.431 \| good
2026-09-06T15:00:00.000Z	38 \| good	6.67 \| good	20.731 \| good	18.48 \| good	0.502 \| good	5.171 \| good	0.368 \| good
2026-09-06T16:00:00.000Z	27 \| good	4.88 \| good	18.419 \| good	18.48 \| good	0.452 \| good	4.084 \| good	0.348 \| good
2026-09-06T17:00:00.000Z	22 \| good	4.304 \| good	22.359 \| good	17.461 \| good	0.519 \| good	9.453 \| good	0.401 \| good
2026-09-06T18:00:00.000Z	33 \| good	5.944 \| good	22.008 \| good	18.428 \| good	0.466 \| good	10.932 \| good	0.395 \| good
2026-09-06T19:00:00.000Z	44 \| good	7.723 \| good	19.043 \| good	17.084 \| good	0.445 \| good	11.507 \| good	0.317 \| good
2026-09-06T20:00:00.000Z	44 \| good	7.751 \| good	18.659 \| good	16.772 \| good	0.425 \| good	8.874 \| good	0.322 \| good
2026-09-06T21:00:00.000Z	38 \| good	7.04 \| good	17.593 \| good	15.909 \| good	0.459 \| good	7.732 \| good	0.255 \| good
2026-09-06T22:00:00.000Z	44 \| good	7.603 \| good	18.13 \| good	14.861 \| good	0.449 \| good	7.527 \| good	0.255 \| good
2026-09-06T23:00:00.000Z	52 \| moderate	10.4 \| good	18.418 \| good	12.198 \| good	0.489 \| good	6.183 \| good	0.303 \| good
2026-09-07T00:00:00.000Z	49 \| good	9.339 \| good	18.862 \| good	9.479 \| good	0.514 \| good	5.763 \| good	0.301 \| good
2026-09-07T01:00:00.000Z	49 \| good	9.34 \| good	20.518 \| good	8.645 \| good	0.517 \| good	8.617 \| good	0.345 \| good
2026-09-07T02:00:00.000Z	38 \| good	7.216 \| good	18.323 \| good	7.821 \| good	0.443 \| good	6.551 \| good	0.35 \| good
2026-09-07T03:00:00.000Z	22 \| good	4.428 \| good	18.816 \| good	22.506 \| good	0.759 \| good	20.142 \| good	0.209 \| good
2026-09-07T04:00:00.000Z	17 \| good	3.462 \| good	18.174 \| good	8.02 \| good	0.486 \| good	4.837 \| good	0.473 \| good
2026-09-07T05:00:00.000Z	17 \| good	2.633 \| good	18.028 \| good	6.61 \| good	0.678 \| good	5.113 \| good	0.561 \| good
2026-09-07T06:00:00.000Z	18 \| good	2.582 \| good	19.024 \| good	6.153 \| good	0.572 \| good	5.984 \| good	0.586 \| good
2026-09-07T07:00:00.000Z	19 \| good	2.708 \| good	20.13 \| good	6.153 \| good	0.574 \| good	5.984 \| good	0.576 \| good
2026-09-07T08:00:00.000Z	33 \| good	6.442 \| good	20.57 \| good	8.5 \| good	0.626 \| good	4.686 \| good	0.5 \| good
2026-09-07T09:00:00.000Z	27 \| good	5.34 \| good	20.933 \| good	6.047 \| good	0.676 \| good	4.985 \| good	0.467 \| good
2026-09-07T10:00:00.000Z	27 \| good	5.122 \| good	20.664 \| good	5.111 \| good	0.603 \| good	4.618 \| good	0.392 \| good
2026-09-07T11:00:00.000Z	33 \| good	6.079 \| good	22.033 \| good	5.93 \| good	0.823 \| good	4.111 \| good	0.387 \| good
2026-09-07T12:00:00.000Z	27 \| good	5.066 \| good	18.75 \| good	6.153 \| good	0.699 \| good	3.365 \| good	0.471 \| good
2026-09-07T13:00:00.000Z	27 \| good	5.112 \| good	18.836 \| good	6.153 \| good	0.727 \| good	3.365 \| good	0.471 \| good
2026-09-07T13:00:00.000Z	27 \| good	5.305 \| good	20.269 \| good	4.066 \| good	0.646 \| good	6.596 \| good	0.505 \| good
2026-09-07T14:00:00.000Z	38 \| good	6.738 \| good	29.954 \| good	13.079 \| good	0.531 \| good	15.502 \| good	0.23 \| good
2026-09-07T15:00:00.000Z	22 \| good	3.777 \| good	16.435 \| good	18.242 \| good	0.651 \| good	14.086 \| good	0.235 \| good
2026-09-07T16:00:00.000Z	22 \| good	4.006 \| good	17.135 \| good	24.492 \| good	0.782 \| good	11.355 \| good	0.197 \| good
2026-09-07T17:00:00.000Z	38 \| good	6.97 \| good	30.901 \| good	33.096 \| good	0.778 \| good	8.179 \| good	0.147 \| good
2026-09-07T18:00:00.000Z	52 \| moderate	10.196 \| good	45.333 \| good	41.969 \| good	0.849 \| good	6.294 \| good	0.132 \| good
2026-09-07T19:00:00.000Z	54 \| moderate	10.887 \| good	48.576 \| good	51.776 \| good	0.914 \| good	5.565 \| good	0.129 \| good
2026-09-07T20:00:00.000Z	77 \| moderate	11.702 \| good	52.594 \| good	62.599 \| fine	1.012 \| good	5.016 \| good	0.128 \| good
2026-09-07T21:00:00.000Z	93 \| moderate	4.457 \| good	19.494 \| good	68.388 \| fine	1.136 \| good	4.45 \| good	0.128 \| good
2026-09-07T22:00:00.000Z	108 \| sensitive	6.625 \| good	29.529 \| good	72.917 \| moderate	1.23 \| good	4.026 \| good	0.126 \| good
2026-09-07T23:00:00.000Z	90 \| moderate	7.664 \| good	33.754 \| good	67.334 \| fine	1.413 \| good	3.977 \| good	0.128 \| good
2026-09-08T00:00:00.000Z	51 \| moderate	5.714 \| good	25.055 \| good	54.944 \| good	1.47 \| good	4.428 \| good	0.129 \| good
2026-09-08T01:00:00.000Z	38 \| good	5.581 \| good	23.95 \| good	40.507 \| good	1.514 \| good	6.281 \| good	0.135 \| good
2026-09-08T02:00:00.000Z	33 \| good	5.629 \| good	24.201 \| good	26.844 \| good	1.573 \| good	10.834 \| good	0.149 \| good
2026-09-08T03:00:00.000Z	19 \| good	2.978 \| good	12.511 \| good	20.663 \| good	1.635 \| good	19.23 \| good	0.177 \| good
2026-09-08T04:00:00.000Z	27 \| good	4.783 \| good	20.872 \| good	16.987 \| good	1.699 \| good	25.611 \| good	0.199 \| good
2026-09-08T05:00:00.000Z	27 \| good	4.998 \| good	21.589 \| good	16.651 \| good	1.749 \| good	28.126 \| good	0.215 \| good
2026-09-08T06:00:00.000Z	38 \| good	7.303 \| good	32.194 \| good	14.095 \| good	1.795 \| good	29.752 \| good	0.237 \| good
2026-09-08T07:00:00.000Z	49 \| good	8.58 \| good	38.055 \| good	13.848 \| good	1.748 \| good	29.93 \| good	0.258 \| good
2026-09-08T08:00:00.000Z	38 \| good	6.89 \| good	30.097 \| good	12.148 \| good	1.583 \| good	28.694 \| good	0.264 \| good
2026-09-08T09:00:00.000Z	33 \| good	5.695 \| good	25.041 \| good	12.248 \| good	1.403 \| good	26.58 \| good	0.259 \| good
2026-09-08T10:00:00.000Z	38 \| good	6.599 \| good	29.251 \| good	9.047 \| good	1.234 \| good	24.339 \| good	0.253 \| good
2026-09-08T11:00:00.000Z	38 \| good	7.453 \| good	32.81 \| good	8.765 \| good	1.089 \| good	22.339 \| good	0.249 \| good
2026-09-08T12:00:00.000Z	38 \| good	6.796 \| good	29.896 \| good	10.049 \| good	0.969 \| good	20.69 \| good	0.245 \| good
2026-09-08T13:00:00.000Z	38 \| good	6.583 \| good	29.152 \| good	10.307 \| good	0.878 \| good	19.543 \| good	0.243 \| good
2026-09-08T14:00:00.000Z	52 \| moderate	9.524 \| good	42.354 \| good	10.018 \| good	0.843 \| good	16.998 \| good	0.249 \| good
2026-09-08T15:00:00.000Z	44 \| good	8.136 \| good	35.664 \| good	15.177 \| good	0.876 \| good	14.818 \| good	0.262 \| good
2026-09-08T16:00:00.000Z	54 \| moderate	11.324 \| good	50.148 \| good	23.328 \| good	0.879 \| good	11.478 \| good	0.21 \| good
2026-09-08T17:00:00.000Z	66 \| moderate	16.85 \| fine	75.097 \| fine	34.171 \| good	0.905 \| good	9.977 \| good	0.168 \| good
2026-09-08T18:00:00.000Z	66 \| moderate	17.287 \| fine	76.609 \| fine	47.728 \| good	1.001 \| good	9.091 \| good	0.158 \| good
2026-09-08T19:00:00.000Z	66 \| moderate	17.093 \| fine	76.058 \| fine	57.906 \| fine	1.113 \| good	8.236 \| good	0.153 \| good
2026-09-08T20:00:00.000Z	100 \| moderate	11.251 \| good	49.844 \| good	70.054 \| fine	1.226 \| good	7.621 \| good	0.151 \| good
2026-09-08T21:00:00.000Z	136 \| sensitive	7.642 \| good	33.507 \| good	80.96 \| moderate	1.277 \| good	6.568 \| good	0.147 \| good
2026-09-08T22:00:00.000Z	161 \| unhealthy	6.908 \| good	30.627 \| good	89.777 \| poor	1.301 \| good	5.735 \| good	0.145 \| good
2026-09-08T23:00:00.000Z	154 \| unhealthy	9.291 \| good	41.277 \| good	87.487 \| poor	1.285 \| good	5.231 \| good	0.142 \| good
2026-09-09T00:00:00.000Z	136 \| sensitive	8.911 \| good	39.817 \| good	80.514 \| moderate	1.212 \| good	5.382 \| good	0.141 \| good
2026-09-09T01:00:00.000Z	87 \| moderate	8.819 \| good	39.564 \| good	66.443 \| fine	1.109 \| good	6.913 \| good	0.146 \| good
2026-09-09T02:00:00.000Z	52 \| moderate	10.4 \| good	45.898 \| good	44.164 \| good	1.061 \| good	12.239 \| good	0.164 \| good
2026-09-09T03:00:00.000Z	31 \| good	2.006 \| good	8.24 \| good	33.05 \| good	1.08 \| good	19.183 \| good	0.188 \| good
2026-09-09T04:00:00.000Z	27 \| good	4.764 \| good	20.607 \| good	24.442 \| good	1.184 \| good	26.203 \| good	0.213 \| good
2026-09-09T05:00:00.000Z	33 \| good	6.404 \| good	28.284 \| good	23.018 \| good	1.303 \| good	29.581 \| good	0.243 \| good
2026-09-09T06:00:00.000Z	30 \| good	5.467 \| good	23.737 \| good	21.499 \| good	1.33 \| good	31.515 \| good	0.265 \| good
2026-09-09T07:00:00.000Z	38 \| good	7.466 \| good	32.683 \| good	19.72 \| good	1.291 \| good	31.928 \| good	0.279 \| good
2026-09-09T08:00:00.000Z	33 \| good	6.373 \| good	28.512 \| good	18.453 \| good	1.219 \| good	30.929 \| good	0.283 \| good
2026-09-09T09:00:00.000Z	28 \| good	4.99 \| good	21.71 \| good	19.802 \| good	1.157 \| good	29.865 \| good	0.279 \| good
2026-09-09T10:00:00.000Z	27 \| good	4.902 \| good	21.293 \| good	18.104 \| good	1.065 \| good	29.223 \| good	0.274 \| good
2026-09-09T11:00:00.000Z	38 \| good	7.311 \| good	32.291 \| good	16.856 \| good	0.955 \| good	28.299 \| good	0.271 \| good
2026-09-09T12:00:00.000Z	73 \| moderate	21.253 \| fine	22.982 \| good	7.869 \| good	0.846 \| good	27.166 \| good	0.269 \| good
2026-09-09T13:00:00.000Z	73 \| moderate	20.92 \| fine	22.734 \| good	7.064 \| good	0.752 \| good	26.009 \| good	0.27 \| good

Walnut

Get reliable air quality data to drive your business

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

0.47ppm

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 11:00:00 on 2026-09-06.

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 05:00:00 on 2026-09-07.

What is the AQI in Walnut, California right now?

As of now, the AQI in Walnut, California is 27, indicating Good 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 5.158 μg/m³.

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

The PM₁₀ concentration in Walnut, California is 20.269 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 0.505 ppm.

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

Currently, Walnut, California has a sulfur dioxide (SO₂) concentration of 0.673 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 4.066 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 6.596 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-05T14:00:00.000Z	29 \| good	4.237 \| good	14.667 \| good	30.685 \| good	0.531 \| good	5.403 \| good	0.517 \| good
2026-09-05T15:00:00.000Z	25 \| good	3.488 \| good	13.416 \| good	27.423 \| good	0.747 \| good	6.929 \| good	0.509 \| good
2026-09-05T16:00:00.000Z	30 \| good	3.248 \| good	16.551 \| good	32.437 \| good	0.677 \| good	8.225 \| good	0.455 \| good
2026-09-05T17:00:00.000Z	31 \| good	3.706 \| good	23.646 \| good	34.436 \| good	0.612 \| good	12.265 \| good	0.378 \| good
2026-09-05T18:00:00.000Z	36 \| good	5.703 \| good	27.412 \| good	39.093 \| good	0.588 \| good	14.352 \| good	0.386 \| good
2026-09-05T19:00:00.000Z	40 \| good	6.906 \| good	26.979 \| good	43.454 \| good	0.582 \| good	9.952 \| good	0.335 \| good
2026-09-05T20:00:00.000Z	43 \| good	5.544 \| good	19.648 \| good	45.972 \| good	0.562 \| good	4.388 \| good	0.291 \| good
2026-09-05T21:00:00.000Z	45 \| good	3.095 \| good	15.719 \| good	49.434 \| good	0.532 \| good	3.658 \| good	0.319 \| good
2026-09-05T22:00:00.000Z	47 \| good	2.407 \| good	13.805 \| good	50.562 \| good	0.479 \| good	3.068 \| good	0.291 \| good
2026-09-05T23:00:00.000Z	49 \| good	1.874 \| good	15.485 \| good	52.998 \| good	0.665 \| good	3.031 \| good	0.316 \| good
2026-09-06T00:00:00.000Z	47 \| good	0.557 \| good	16.579 \| good	50.851 \| good	0.737 \| good	3.527 \| good	0.308 \| good
2026-09-06T01:00:00.000Z	44 \| good	1.651 \| good	14.142 \| good	47.766 \| good	0.736 \| good	4.312 \| good	0.339 \| good
2026-09-06T02:00:00.000Z	41 \| good	2.648 \| good	14.089 \| good	44.094 \| good	0.665 \| good	5.264 \| good	0.366 \| good
2026-09-06T03:00:00.000Z	30 \| good	2.403 \| good	10.647 \| good	31.875 \| good	1.401 \| good	7.775 \| good	0.141 \| good
2026-09-06T04:00:00.000Z	33 \| good	5.521 \| good	21.843 \| good	35.17 \| good	0.551 \| good	10.399 \| good	0.427 \| good
2026-09-06T05:00:00.000Z	38 \| good	6.637 \| good	21.266 \| good	31.493 \| good	0.78 \| good	8.961 \| good	0.501 \| good
2026-09-06T06:00:00.000Z	33 \| good	5.977 \| good	21.261 \| good	29.268 \| good	0.576 \| good	9.359 \| good	0.525 \| good
2026-09-06T07:00:00.000Z	33 \| good	5.978 \| good	21.023 \| good	29.268 \| good	0.56 \| good	9.359 \| good	0.531 \| good
2026-09-06T08:00:00.000Z	44 \| good	8.291 \| good	23.143 \| good	26.681 \| good	0.574 \| good	9.298 \| good	0.575 \| good
2026-09-06T09:00:00.000Z	33 \| good	6.333 \| good	18.798 \| good	26.032 \| good	0.708 \| good	8.723 \| good	0.476 \| good
2026-09-06T10:00:00.000Z	33 \| good	6.268 \| good	18.551 \| good	24.479 \| good	0.709 \| good	8.723 \| good	0.476 \| good
2026-09-06T11:00:00.000Z	33 \| good	5.998 \| good	17.487 \| good	24.479 \| good	0.709 \| good	8.723 \| good	0.476 \| good
2026-09-06T12:00:00.000Z	38 \| good	6.897 \| good	17.575 \| good	19.819 \| good	0.547 \| good	6.647 \| good	0.46 \| good
2026-09-06T13:00:00.000Z	38 \| good	6.892 \| good	17.279 \| good	19.819 \| good	0.547 \| good	6.647 \| good	0.46 \| good
2026-09-06T14:00:00.000Z	38 \| good	7.13 \| good	23.242 \| good	18.48 \| good	0.471 \| good	5.171 \| good	0.431 \| good
2026-09-06T15:00:00.000Z	38 \| good	6.67 \| good	20.731 \| good	18.48 \| good	0.502 \| good	5.171 \| good	0.368 \| good
2026-09-06T16:00:00.000Z	27 \| good	4.88 \| good	18.419 \| good	18.48 \| good	0.452 \| good	4.084 \| good	0.348 \| good
2026-09-06T17:00:00.000Z	22 \| good	4.304 \| good	22.359 \| good	17.461 \| good	0.519 \| good	9.453 \| good	0.401 \| good
2026-09-06T18:00:00.000Z	33 \| good	5.944 \| good	22.008 \| good	18.428 \| good	0.466 \| good	10.932 \| good	0.395 \| good
2026-09-06T19:00:00.000Z	44 \| good	7.723 \| good	19.043 \| good	17.084 \| good	0.445 \| good	11.507 \| good	0.317 \| good
2026-09-06T20:00:00.000Z	44 \| good	7.751 \| good	18.659 \| good	16.772 \| good	0.425 \| good	8.874 \| good	0.322 \| good
2026-09-06T21:00:00.000Z	38 \| good	7.04 \| good	17.593 \| good	15.909 \| good	0.459 \| good	7.732 \| good	0.255 \| good
2026-09-06T22:00:00.000Z	44 \| good	7.603 \| good	18.13 \| good	14.861 \| good	0.449 \| good	7.527 \| good	0.255 \| good
2026-09-06T23:00:00.000Z	52 \| moderate	10.4 \| good	18.418 \| good	12.198 \| good	0.489 \| good	6.183 \| good	0.303 \| good
2026-09-07T00:00:00.000Z	49 \| good	9.339 \| good	18.862 \| good	9.479 \| good	0.514 \| good	5.763 \| good	0.301 \| good
2026-09-07T01:00:00.000Z	49 \| good	9.34 \| good	20.518 \| good	8.645 \| good	0.517 \| good	8.617 \| good	0.345 \| good
2026-09-07T02:00:00.000Z	38 \| good	7.216 \| good	18.323 \| good	7.821 \| good	0.443 \| good	6.551 \| good	0.35 \| good
2026-09-07T03:00:00.000Z	22 \| good	4.428 \| good	18.816 \| good	22.506 \| good	0.759 \| good	20.142 \| good	0.209 \| good
2026-09-07T04:00:00.000Z	17 \| good	3.462 \| good	18.174 \| good	8.02 \| good	0.486 \| good	4.837 \| good	0.473 \| good
2026-09-07T05:00:00.000Z	17 \| good	2.633 \| good	18.028 \| good	6.61 \| good	0.678 \| good	5.113 \| good	0.561 \| good
2026-09-07T06:00:00.000Z	18 \| good	2.582 \| good	19.024 \| good	6.153 \| good	0.572 \| good	5.984 \| good	0.586 \| good
2026-09-07T07:00:00.000Z	19 \| good	2.708 \| good	20.13 \| good	6.153 \| good	0.574 \| good	5.984 \| good	0.576 \| good
2026-09-07T08:00:00.000Z	33 \| good	6.442 \| good	20.57 \| good	8.5 \| good	0.626 \| good	4.686 \| good	0.5 \| good
2026-09-07T09:00:00.000Z	27 \| good	5.34 \| good	20.933 \| good	6.047 \| good	0.676 \| good	4.985 \| good	0.467 \| good
2026-09-07T10:00:00.000Z	27 \| good	5.122 \| good	20.664 \| good	5.111 \| good	0.603 \| good	4.618 \| good	0.392 \| good
2026-09-07T11:00:00.000Z	33 \| good	6.079 \| good	22.033 \| good	5.93 \| good	0.823 \| good	4.111 \| good	0.387 \| good
2026-09-07T12:00:00.000Z	27 \| good	5.066 \| good	18.75 \| good	6.153 \| good	0.699 \| good	3.365 \| good	0.471 \| good
2026-09-07T13:00:00.000Z	27 \| good	5.112 \| good	18.836 \| good	6.153 \| good	0.727 \| good	3.365 \| good	0.471 \| good
2026-09-07T13:00:00.000Z	27 \| good	5.305 \| good	20.269 \| good	4.066 \| good	0.646 \| good	6.596 \| good	0.505 \| good
2026-09-07T14:00:00.000Z	38 \| good	6.738 \| good	29.954 \| good	13.079 \| good	0.531 \| good	15.502 \| good	0.23 \| good
2026-09-07T15:00:00.000Z	22 \| good	3.777 \| good	16.435 \| good	18.242 \| good	0.651 \| good	14.086 \| good	0.235 \| good
2026-09-07T16:00:00.000Z	22 \| good	4.006 \| good	17.135 \| good	24.492 \| good	0.782 \| good	11.355 \| good	0.197 \| good
2026-09-07T17:00:00.000Z	38 \| good	6.97 \| good	30.901 \| good	33.096 \| good	0.778 \| good	8.179 \| good	0.147 \| good
2026-09-07T18:00:00.000Z	52 \| moderate	10.196 \| good	45.333 \| good	41.969 \| good	0.849 \| good	6.294 \| good	0.132 \| good
2026-09-07T19:00:00.000Z	54 \| moderate	10.887 \| good	48.576 \| good	51.776 \| good	0.914 \| good	5.565 \| good	0.129 \| good
2026-09-07T20:00:00.000Z	77 \| moderate	11.702 \| good	52.594 \| good	62.599 \| fine	1.012 \| good	5.016 \| good	0.128 \| good
2026-09-07T21:00:00.000Z	93 \| moderate	4.457 \| good	19.494 \| good	68.388 \| fine	1.136 \| good	4.45 \| good	0.128 \| good
2026-09-07T22:00:00.000Z	108 \| sensitive	6.625 \| good	29.529 \| good	72.917 \| moderate	1.23 \| good	4.026 \| good	0.126 \| good
2026-09-07T23:00:00.000Z	90 \| moderate	7.664 \| good	33.754 \| good	67.334 \| fine	1.413 \| good	3.977 \| good	0.128 \| good
2026-09-08T00:00:00.000Z	51 \| moderate	5.714 \| good	25.055 \| good	54.944 \| good	1.47 \| good	4.428 \| good	0.129 \| good
2026-09-08T01:00:00.000Z	38 \| good	5.581 \| good	23.95 \| good	40.507 \| good	1.514 \| good	6.281 \| good	0.135 \| good
2026-09-08T02:00:00.000Z	33 \| good	5.629 \| good	24.201 \| good	26.844 \| good	1.573 \| good	10.834 \| good	0.149 \| good
2026-09-08T03:00:00.000Z	19 \| good	2.978 \| good	12.511 \| good	20.663 \| good	1.635 \| good	19.23 \| good	0.177 \| good
2026-09-08T04:00:00.000Z	27 \| good	4.783 \| good	20.872 \| good	16.987 \| good	1.699 \| good	25.611 \| good	0.199 \| good
2026-09-08T05:00:00.000Z	27 \| good	4.998 \| good	21.589 \| good	16.651 \| good	1.749 \| good	28.126 \| good	0.215 \| good
2026-09-08T06:00:00.000Z	38 \| good	7.303 \| good	32.194 \| good	14.095 \| good	1.795 \| good	29.752 \| good	0.237 \| good
2026-09-08T07:00:00.000Z	49 \| good	8.58 \| good	38.055 \| good	13.848 \| good	1.748 \| good	29.93 \| good	0.258 \| good
2026-09-08T08:00:00.000Z	38 \| good	6.89 \| good	30.097 \| good	12.148 \| good	1.583 \| good	28.694 \| good	0.264 \| good
2026-09-08T09:00:00.000Z	33 \| good	5.695 \| good	25.041 \| good	12.248 \| good	1.403 \| good	26.58 \| good	0.259 \| good
2026-09-08T10:00:00.000Z	38 \| good	6.599 \| good	29.251 \| good	9.047 \| good	1.234 \| good	24.339 \| good	0.253 \| good
2026-09-08T11:00:00.000Z	38 \| good	7.453 \| good	32.81 \| good	8.765 \| good	1.089 \| good	22.339 \| good	0.249 \| good
2026-09-08T12:00:00.000Z	38 \| good	6.796 \| good	29.896 \| good	10.049 \| good	0.969 \| good	20.69 \| good	0.245 \| good
2026-09-08T13:00:00.000Z	38 \| good	6.583 \| good	29.152 \| good	10.307 \| good	0.878 \| good	19.543 \| good	0.243 \| good
2026-09-08T14:00:00.000Z	52 \| moderate	9.524 \| good	42.354 \| good	10.018 \| good	0.843 \| good	16.998 \| good	0.249 \| good
2026-09-08T15:00:00.000Z	44 \| good	8.136 \| good	35.664 \| good	15.177 \| good	0.876 \| good	14.818 \| good	0.262 \| good
2026-09-08T16:00:00.000Z	54 \| moderate	11.324 \| good	50.148 \| good	23.328 \| good	0.879 \| good	11.478 \| good	0.21 \| good
2026-09-08T17:00:00.000Z	66 \| moderate	16.85 \| fine	75.097 \| fine	34.171 \| good	0.905 \| good	9.977 \| good	0.168 \| good
2026-09-08T18:00:00.000Z	66 \| moderate	17.287 \| fine	76.609 \| fine	47.728 \| good	1.001 \| good	9.091 \| good	0.158 \| good
2026-09-08T19:00:00.000Z	66 \| moderate	17.093 \| fine	76.058 \| fine	57.906 \| fine	1.113 \| good	8.236 \| good	0.153 \| good
2026-09-08T20:00:00.000Z	100 \| moderate	11.251 \| good	49.844 \| good	70.054 \| fine	1.226 \| good	7.621 \| good	0.151 \| good
2026-09-08T21:00:00.000Z	136 \| sensitive	7.642 \| good	33.507 \| good	80.96 \| moderate	1.277 \| good	6.568 \| good	0.147 \| good
2026-09-08T22:00:00.000Z	161 \| unhealthy	6.908 \| good	30.627 \| good	89.777 \| poor	1.301 \| good	5.735 \| good	0.145 \| good
2026-09-08T23:00:00.000Z	154 \| unhealthy	9.291 \| good	41.277 \| good	87.487 \| poor	1.285 \| good	5.231 \| good	0.142 \| good
2026-09-09T00:00:00.000Z	136 \| sensitive	8.911 \| good	39.817 \| good	80.514 \| moderate	1.212 \| good	5.382 \| good	0.141 \| good
2026-09-09T01:00:00.000Z	87 \| moderate	8.819 \| good	39.564 \| good	66.443 \| fine	1.109 \| good	6.913 \| good	0.146 \| good
2026-09-09T02:00:00.000Z	52 \| moderate	10.4 \| good	45.898 \| good	44.164 \| good	1.061 \| good	12.239 \| good	0.164 \| good
2026-09-09T03:00:00.000Z	31 \| good	2.006 \| good	8.24 \| good	33.05 \| good	1.08 \| good	19.183 \| good	0.188 \| good
2026-09-09T04:00:00.000Z	27 \| good	4.764 \| good	20.607 \| good	24.442 \| good	1.184 \| good	26.203 \| good	0.213 \| good
2026-09-09T05:00:00.000Z	33 \| good	6.404 \| good	28.284 \| good	23.018 \| good	1.303 \| good	29.581 \| good	0.243 \| good
2026-09-09T06:00:00.000Z	30 \| good	5.467 \| good	23.737 \| good	21.499 \| good	1.33 \| good	31.515 \| good	0.265 \| good
2026-09-09T07:00:00.000Z	38 \| good	7.466 \| good	32.683 \| good	19.72 \| good	1.291 \| good	31.928 \| good	0.279 \| good
2026-09-09T08:00:00.000Z	33 \| good	6.373 \| good	28.512 \| good	18.453 \| good	1.219 \| good	30.929 \| good	0.283 \| good
2026-09-09T09:00:00.000Z	28 \| good	4.99 \| good	21.71 \| good	19.802 \| good	1.157 \| good	29.865 \| good	0.279 \| good
2026-09-09T10:00:00.000Z	27 \| good	4.902 \| good	21.293 \| good	18.104 \| good	1.065 \| good	29.223 \| good	0.274 \| good
2026-09-09T11:00:00.000Z	38 \| good	7.311 \| good	32.291 \| good	16.856 \| good	0.955 \| good	28.299 \| good	0.271 \| good
2026-09-09T12:00:00.000Z	73 \| moderate	21.253 \| fine	22.982 \| good	7.869 \| good	0.846 \| good	27.166 \| good	0.269 \| good
2026-09-09T13:00:00.000Z	73 \| moderate	20.92 \| fine	22.734 \| good	7.064 \| good	0.752 \| good	26.009 \| good	0.27 \| good

Live 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)

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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

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La Puente, California

Covina, California

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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