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

The PM10 concentration in Walnut, California is 29.023 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 0.535 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 23.352 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 21.746 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 8.742 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)

8.74 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

29.02 μg/m³

155

255

425

605+

Ozone (O₃)

23.35 ppb

201

201+

Sulfur Dioxide (SO₂)

0.54 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

21.75 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.40 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
2025-12-06T22:00:00.000Z	33 \| good	6.312 \| good	23.567 \| good	31.512 \| good	0.599 \| good	13.613 \| good	0.265 \| good
2025-12-06T23:00:00.000Z	33 \| good	6.248 \| good	21.976 \| good	33.914 \| good	0.759 \| good	15.341 \| good	0.302 \| good
2025-12-07T00:00:00.000Z	33 \| good	5.969 \| good	19.348 \| good	35.374 \| good	0.802 \| good	16.425 \| good	0.275 \| good
2025-12-07T01:00:00.000Z	38 \| good	6.973 \| good	38.615 \| good	32.28 \| good	0.808 \| good	17.926 \| good	0.302 \| good
2025-12-07T02:00:00.000Z	44 \| good	8.299 \| good	31.99 \| good	28.545 \| good	0.753 \| good	20.556 \| good	0.377 \| good
2025-12-07T03:00:00.000Z	49 \| good	9.11 \| good	34.455 \| good	24.64 \| good	0.735 \| good	23.099 \| good	0.49 \| good
2025-12-07T04:00:00.000Z	49 \| good	9.469 \| good	36.771 \| good	21.732 \| good	0.887 \| good	27.419 \| good	0.61 \| good
2025-12-07T05:00:00.000Z	64 \| moderate	15.57 \| fine	45.506 \| good	21.732 \| good	0.753 \| good	26.906 \| good	0.654 \| good
2025-12-07T06:00:00.000Z	69 \| moderate	18.602 \| fine	39.785 \| good	13.712 \| good	0.864 \| good	25.996 \| good	0.709 \| good
2025-12-07T07:00:00.000Z	67 \| moderate	17.835 \| fine	57.241 \| fine	13.712 \| good	0.881 \| good	25.996 \| good	0.709 \| good
2025-12-07T08:00:00.000Z	66 \| moderate	16.76 \| fine	45.056 \| good	12.11 \| good	0.984 \| good	23.257 \| good	0.611 \| good
2025-12-07T09:00:00.000Z	66 \| moderate	16.754 \| fine	29.306 \| good	7.975 \| good	0.745 \| good	22.283 \| good	0.689 \| good
2025-12-07T10:00:00.000Z	66 \| moderate	16.785 \| fine	37.947 \| good	8.746 \| good	0.935 \| good	21.961 \| good	0.652 \| good
2025-12-07T11:00:00.000Z	67 \| moderate	18.455 \| fine	37.319 \| good	8.238 \| good	0.931 \| good	21.961 \| good	0.652 \| good
2025-12-07T12:00:00.000Z	69 \| moderate	19.351 \| fine	60.064 \| fine	8.018 \| good	0.923 \| good	21.961 \| good	0.652 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	17.303 \| fine	40.907 \| good	8.299 \| good	0.836 \| good	5.689 \| good	0.649 \| good
2025-12-07T14:00:00.000Z	60 \| moderate	14.084 \| fine	55.652 \| fine	7.389 \| good	0.67 \| good	17.98 \| good	0.516 \| good
2025-12-07T15:00:00.000Z	62 \| moderate	14.902 \| fine	35.426 \| good	8.621 \| good	0.814 \| good	17.658 \| good	0.552 \| good
2025-12-07T16:00:00.000Z	60 \| moderate	13.868 \| fine	39.994 \| good	8.621 \| good	0.831 \| good	18.8 \| good	0.529 \| good
2025-12-07T17:00:00.000Z	56 \| moderate	12.315 \| fine	33.372 \| good	14.488 \| good	0.728 \| good	21.209 \| good	0.54 \| good
2025-12-07T18:00:00.000Z	60 \| moderate	14.458 \| fine	38.186 \| good	17.283 \| good	0.657 \| good	22.678 \| good	0.533 \| good
2025-12-07T19:00:00.000Z	56 \| moderate	12.467 \| fine	31.525 \| good	21.76 \| good	0.783 \| good	20.614 \| good	0.45 \| good
2025-12-07T20:00:00.000Z	62 \| moderate	15.289 \| fine	40.275 \| good	25.898 \| good	0.912 \| good	19.652 \| good	0.465 \| good
2025-12-07T21:00:00.000Z	58 \| moderate	12.88 \| fine	30.911 \| good	31.972 \| good	0.689 \| good	15.06 \| good	0.347 \| good
2025-12-07T22:00:00.000Z	64 \| moderate	16.256 \| fine	54.556 \| good	34.529 \| good	0.736 \| good	14.242 \| good	0.328 \| good
2025-12-07T23:00:00.000Z	60 \| moderate	14.028 \| fine	36.772 \| good	37.581 \| good	0.962 \| good	14.705 \| good	0.303 \| good
2025-12-08T00:00:00.000Z	52 \| moderate	10.109 \| good	28.773 \| good	38.46 \| good	0.948 \| good	17.99 \| good	0.403 \| good
2025-12-08T01:00:00.000Z	54 \| moderate	10.731 \| good	40.978 \| good	33.899 \| good	0.607 \| good	25.418 \| good	0.536 \| good
2025-12-08T02:00:00.000Z	58 \| moderate	12.865 \| fine	31.556 \| good	27.785 \| good	0.549 \| good	31.674 \| good	0.644 \| good
2025-12-08T03:00:00.000Z	56 \| moderate	11.737 \| good	36.386 \| good	20.475 \| good	0.749 \| good	35.97 \| good	0.724 \| good
2025-12-08T04:00:00.000Z	60 \| moderate	13.672 \| fine	37.993 \| good	18.49 \| good	0.735 \| good	33.854 \| good	0.714 \| good
2025-12-08T05:00:00.000Z	62 \| moderate	14.768 \| fine	33.131 \| good	13.278 \| good	0.77 \| good	29.898 \| good	0.705 \| good
2025-12-08T06:00:00.000Z	66 \| moderate	16.714 \| fine	37.56 \| good	10.526 \| good	0.973 \| good	26.213 \| good	0.786 \| good
2025-12-08T07:00:00.000Z	67 \| moderate	18.31 \| fine	37.717 \| good	10.526 \| good	0.997 \| good	26.213 \| good	0.786 \| good
2025-12-08T08:00:00.000Z	67 \| moderate	18.453 \| fine	42.85 \| good	9.575 \| good	0.998 \| good	22.671 \| good	0.636 \| good
2025-12-08T09:00:00.000Z	66 \| moderate	16.672 \| fine	39.01 \| good	9.55 \| good	0.661 \| good	20.912 \| good	0.564 \| good
2025-12-08T10:00:00.000Z	66 \| moderate	17.492 \| fine	39.359 \| good	9.14 \| good	0.954 \| good	21.058 \| good	0.571 \| good
2025-12-08T11:00:00.000Z	64 \| moderate	15.799 \| fine	46.723 \| good	9.545 \| good	0.713 \| good	19.383 \| good	0.508 \| good
2025-12-08T12:00:00.000Z	64 \| moderate	16.223 \| fine	50.963 \| good	9.875 \| good	0.819 \| good	19.026 \| good	0.478 \| good
2025-12-08T13:00:00.000Z	64 \| moderate	16.456 \| fine	52.489 \| good	9.899 \| good	0.822 \| good	19.026 \| good	0.478 \| good
2025-12-08T14:00:00.000Z	44 \| good	7.918 \| good	18.556 \| good	9.855 \| good	0.781 \| good	19.637 \| good	0.591 \| good
2025-12-08T15:00:00.000Z	33 \| good	6.062 \| good	19.539 \| good	12.219 \| good	0.965 \| good	20.945 \| good	0.751 \| good
2025-12-08T16:00:00.000Z	44 \| good	8.437 \| good	23.564 \| good	13.199 \| good	1.256 \| good	22.218 \| good	0.85 \| good
2025-12-08T17:00:00.000Z	49 \| good	9.062 \| good	34.421 \| good	15.751 \| good	0.976 \| good	22.6 \| good	0.742 \| good
2025-12-08T18:00:00.000Z	52 \| moderate	9.717 \| good	41.942 \| good	18.992 \| good	0.701 \| good	21.321 \| good	0.445 \| good
2025-12-08T19:00:00.000Z	49 \| good	9.202 \| good	28.279 \| good	21.646 \| good	0.665 \| good	20.844 \| good	0.417 \| good
2025-12-08T20:00:00.000Z	49 \| good	8.742 \| good	29.023 \| good	23.352 \| good	0.535 \| good	21.746 \| good	0.401 \| good
2025-12-08T21:00:00.000Z	49 \| good	8.742 \| good	29.023 \| good	23.352 \| good	0.535 \| good	21.746 \| good	0.401 \| good
2025-12-08T22:00:00.000Z	34 \| good	4.59 \| good	19.787 \| good	37.275 \| good	3.294 \| good	18.367 \| good	0.205 \| good
2025-12-08T23:00:00.000Z	38 \| good	6.789 \| good	30.089 \| good	34.814 \| good	3.663 \| good	22.266 \| good	0.226 \| good
2025-12-09T00:00:00.000Z	54 \| moderate	11.182 \| good	49.363 \| good	25.333 \| good	4.032 \| good	26.166 \| good	0.246 \| good
2025-12-09T01:00:00.000Z	58 \| moderate	13.251 \| fine	59.665 \| fine	16.297 \| good	3.978 \| good	28.895 \| good	0.289 \| good
2025-12-09T02:00:00.000Z	56 \| moderate	12.215 \| fine	54.275 \| good	11.342 \| good	3.924 \| good	31.624 \| good	0.333 \| good
2025-12-09T03:00:00.000Z	52 \| moderate	9.885 \| good	44.088 \| good	8.681 \| good	3.87 \| good	34.353 \| good	0.376 \| good
2025-12-09T04:00:00.000Z	49 \| good	8.544 \| good	37.367 \| good	9.677 \| good	3.424 \| good	32.551 \| good	0.342 \| good
2025-12-09T05:00:00.000Z	44 \| good	8.025 \| good	35.402 \| good	10.318 \| good	2.977 \| good	30.748 \| good	0.308 \| good
2025-12-09T06:00:00.000Z	38 \| good	7.152 \| good	31.522 \| good	12.387 \| good	2.531 \| good	28.945 \| good	0.274 \| good
2025-12-09T07:00:00.000Z	38 \| good	7.194 \| good	31.802 \| good	11.394 \| good	2.226 \| good	26.532 \| good	0.241 \| good
2025-12-09T08:00:00.000Z	33 \| good	5.709 \| good	24.692 \| good	9.725 \| good	1.922 \| good	24.119 \| good	0.207 \| good
2025-12-09T09:00:00.000Z	27 \| good	4.855 \| good	21.39 \| good	9.003 \| good	1.617 \| good	21.705 \| good	0.173 \| good
2025-12-09T10:00:00.000Z	22 \| good	3.549 \| good	15.54 \| good	9.542 \| good	1.642 \| good	18.759 \| good	0.157 \| good
2025-12-09T11:00:00.000Z	16 \| good	3.214 \| good	13.869 \| good	8.179 \| good	1.666 \| good	15.813 \| good	0.14 \| good
2025-12-09T12:00:00.000Z	22 \| good	3.712 \| good	16.063 \| good	7.159 \| good	1.691 \| good	12.867 \| good	0.124 \| good
2025-12-09T13:00:00.000Z	14 \| good	1.753 \| good	7.195 \| good	7.317 \| good	1.825 \| good	15.42 \| good	0.138 \| good
2025-12-09T14:00:00.000Z	17 \| good	2.736 \| good	11.154 \| good	6.502 \| good	1.958 \| good	17.973 \| good	0.152 \| good
2025-12-09T15:00:00.000Z	20 \| good	3.094 \| good	12.786 \| good	7.053 \| good	2.092 \| good	20.526 \| good	0.166 \| good
2025-12-09T16:00:00.000Z	22 \| good	3.842 \| good	16.63 \| good	9.649 \| good	2.279 \| good	19.553 \| good	0.184 \| good
2025-12-09T17:00:00.000Z	22 \| good	4.439 \| good	19.303 \| good	15.507 \| good	2.465 \| good	18.58 \| good	0.203 \| good
2025-12-09T18:00:00.000Z	22 \| good	4.404 \| good	18.947 \| good	20.895 \| good	2.651 \| good	17.607 \| good	0.221 \| good
2025-12-09T19:00:00.000Z	24 \| good	4.34 \| good	18.703 \| good	25.941 \| good	2.872 \| good	16.632 \| good	0.206 \| good
2025-12-09T20:00:00.000Z	30 \| good	4.122 \| good	17.835 \| good	31.603 \| good	3.094 \| good	15.656 \| good	0.19 \| good
2025-12-09T21:00:00.000Z	31 \| good	3.876 \| good	17.094 \| good	33.302 \| good	3.315 \| good	14.68 \| good	0.175 \| good
2025-12-09T22:00:00.000Z	32 \| good	3.757 \| good	16.036 \| good	35.475 \| good	3.721 \| good	18.841 \| good	0.197 \| good
2025-12-09T23:00:00.000Z	31 \| good	5.167 \| good	22.56 \| good	32.931 \| good	4.127 \| good	23.002 \| good	0.22 \| good
2025-12-10T00:00:00.000Z	38 \| good	7.044 \| good	31.366 \| good	25.113 \| good	4.533 \| good	27.163 \| good	0.243 \| good
2025-12-10T01:00:00.000Z	52 \| moderate	10.236 \| good	45.399 \| good	12.781 \| good	4.535 \| good	30.33 \| good	0.306 \| good
2025-12-10T02:00:00.000Z	58 \| moderate	12.594 \| fine	56.443 \| fine	9.309 \| good	4.537 \| good	33.498 \| good	0.368 \| good
2025-12-10T03:00:00.000Z	56 \| moderate	12.381 \| fine	55.007 \| fine	7.175 \| good	4.54 \| good	36.665 \| good	0.431 \| good
2025-12-10T04:00:00.000Z	54 \| moderate	10.676 \| good	47.647 \| good	6.559 \| good	4.067 \| good	34.868 \| good	0.398 \| good
2025-12-10T05:00:00.000Z	44 \| good	8.334 \| good	37.113 \| good	7.002 \| good	3.595 \| good	33.07 \| good	0.366 \| good
2025-12-10T06:00:00.000Z	33 \| good	6.286 \| good	27.367 \| good	8.468 \| good	3.122 \| good	31.273 \| good	0.333 \| good
2025-12-10T07:00:00.000Z	28 \| good	5.099 \| good	22.165 \| good	8.822 \| good	2.687 \| good	29.815 \| good	0.294 \| good
2025-12-10T08:00:00.000Z	26 \| good	3.911 \| good	17.059 \| good	7.934 \| good	2.251 \| good	28.357 \| good	0.254 \| good
2025-12-10T09:00:00.000Z	25 \| good	3.537 \| good	15.344 \| good	7.82 \| good	1.816 \| good	26.899 \| good	0.215 \| good
2025-12-10T10:00:00.000Z	22 \| good	2.847 \| good	12.185 \| good	8.563 \| good	1.682 \| good	23.183 \| good	0.188 \| good
2025-12-10T11:00:00.000Z	18 \| good	2.222 \| good	8.803 \| good	8.141 \| good	1.549 \| good	19.466 \| good	0.162 \| good
2025-12-10T12:00:00.000Z	15 \| good	2.453 \| good	10.086 \| good	6.792 \| good	1.416 \| good	15.75 \| good	0.135 \| good
2025-12-10T13:00:00.000Z	17 \| good	1.136 \| good	4.768 \| good	5.812 \| good	1.555 \| good	17.537 \| good	0.147 \| good
2025-12-10T14:00:00.000Z	18 \| good	1.954 \| good	7.783 \| good	5.685 \| good	1.694 \| good	19.325 \| good	0.159 \| good
2025-12-10T15:00:00.000Z	20 \| good	2.402 \| good	9.825 \| good	6.127 \| good	1.833 \| good	21.113 \| good	0.17 \| good
2025-12-10T16:00:00.000Z	22 \| good	3.561 \| good	15.147 \| good	8.432 \| good	2.078 \| good	20.417 \| good	0.196 \| good
2025-12-10T17:00:00.000Z	22 \| good	4.458 \| good	19.415 \| good	12.417 \| good	2.323 \| good	19.722 \| good	0.221 \| good
2025-12-10T18:00:00.000Z	27 \| good	4.909 \| good	21.163 \| good	17.608 \| good	2.567 \| good	19.026 \| good	0.247 \| good
2025-12-10T19:00:00.000Z	27 \| good	5.292 \| good	22.927 \| good	24.407 \| good	2.874 \| good	18.582 \| good	0.232 \| good
2025-12-10T20:00:00.000Z	28 \| good	4.307 \| good	18.81 \| good	30.013 \| good	3.181 \| good	18.139 \| good	0.217 \| good
2025-12-10T21:00:00.000Z	31 \| good	4.229 \| good	18.585 \| good	32.558 \| good	3.488 \| good	17.695 \| good	0.203 \| 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 2025-12-08.

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 03:00:00 on 2025-12-08.

What is the AQI in Walnut, California right now?

As of now, the AQI in Walnut, California is 49, 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 8.742 μg/m³.

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

The PM₁₀ concentration in Walnut, California is 29.023 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 0.401 ppm.

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

Currently, Walnut, California has a sulfur dioxide (SO₂) concentration of 0.535 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 23.352 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 21.746 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-06T22:00:00.000Z	33 \| good	6.312 \| good	23.567 \| good	31.512 \| good	0.599 \| good	13.613 \| good	0.265 \| good
2025-12-06T23:00:00.000Z	33 \| good	6.248 \| good	21.976 \| good	33.914 \| good	0.759 \| good	15.341 \| good	0.302 \| good
2025-12-07T00:00:00.000Z	33 \| good	5.969 \| good	19.348 \| good	35.374 \| good	0.802 \| good	16.425 \| good	0.275 \| good
2025-12-07T01:00:00.000Z	38 \| good	6.973 \| good	38.615 \| good	32.28 \| good	0.808 \| good	17.926 \| good	0.302 \| good
2025-12-07T02:00:00.000Z	44 \| good	8.299 \| good	31.99 \| good	28.545 \| good	0.753 \| good	20.556 \| good	0.377 \| good
2025-12-07T03:00:00.000Z	49 \| good	9.11 \| good	34.455 \| good	24.64 \| good	0.735 \| good	23.099 \| good	0.49 \| good
2025-12-07T04:00:00.000Z	49 \| good	9.469 \| good	36.771 \| good	21.732 \| good	0.887 \| good	27.419 \| good	0.61 \| good
2025-12-07T05:00:00.000Z	64 \| moderate	15.57 \| fine	45.506 \| good	21.732 \| good	0.753 \| good	26.906 \| good	0.654 \| good
2025-12-07T06:00:00.000Z	69 \| moderate	18.602 \| fine	39.785 \| good	13.712 \| good	0.864 \| good	25.996 \| good	0.709 \| good
2025-12-07T07:00:00.000Z	67 \| moderate	17.835 \| fine	57.241 \| fine	13.712 \| good	0.881 \| good	25.996 \| good	0.709 \| good
2025-12-07T08:00:00.000Z	66 \| moderate	16.76 \| fine	45.056 \| good	12.11 \| good	0.984 \| good	23.257 \| good	0.611 \| good
2025-12-07T09:00:00.000Z	66 \| moderate	16.754 \| fine	29.306 \| good	7.975 \| good	0.745 \| good	22.283 \| good	0.689 \| good
2025-12-07T10:00:00.000Z	66 \| moderate	16.785 \| fine	37.947 \| good	8.746 \| good	0.935 \| good	21.961 \| good	0.652 \| good
2025-12-07T11:00:00.000Z	67 \| moderate	18.455 \| fine	37.319 \| good	8.238 \| good	0.931 \| good	21.961 \| good	0.652 \| good
2025-12-07T12:00:00.000Z	69 \| moderate	19.351 \| fine	60.064 \| fine	8.018 \| good	0.923 \| good	21.961 \| good	0.652 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	17.303 \| fine	40.907 \| good	8.299 \| good	0.836 \| good	5.689 \| good	0.649 \| good
2025-12-07T14:00:00.000Z	60 \| moderate	14.084 \| fine	55.652 \| fine	7.389 \| good	0.67 \| good	17.98 \| good	0.516 \| good
2025-12-07T15:00:00.000Z	62 \| moderate	14.902 \| fine	35.426 \| good	8.621 \| good	0.814 \| good	17.658 \| good	0.552 \| good
2025-12-07T16:00:00.000Z	60 \| moderate	13.868 \| fine	39.994 \| good	8.621 \| good	0.831 \| good	18.8 \| good	0.529 \| good
2025-12-07T17:00:00.000Z	56 \| moderate	12.315 \| fine	33.372 \| good	14.488 \| good	0.728 \| good	21.209 \| good	0.54 \| good
2025-12-07T18:00:00.000Z	60 \| moderate	14.458 \| fine	38.186 \| good	17.283 \| good	0.657 \| good	22.678 \| good	0.533 \| good
2025-12-07T19:00:00.000Z	56 \| moderate	12.467 \| fine	31.525 \| good	21.76 \| good	0.783 \| good	20.614 \| good	0.45 \| good
2025-12-07T20:00:00.000Z	62 \| moderate	15.289 \| fine	40.275 \| good	25.898 \| good	0.912 \| good	19.652 \| good	0.465 \| good
2025-12-07T21:00:00.000Z	58 \| moderate	12.88 \| fine	30.911 \| good	31.972 \| good	0.689 \| good	15.06 \| good	0.347 \| good
2025-12-07T22:00:00.000Z	64 \| moderate	16.256 \| fine	54.556 \| good	34.529 \| good	0.736 \| good	14.242 \| good	0.328 \| good
2025-12-07T23:00:00.000Z	60 \| moderate	14.028 \| fine	36.772 \| good	37.581 \| good	0.962 \| good	14.705 \| good	0.303 \| good
2025-12-08T00:00:00.000Z	52 \| moderate	10.109 \| good	28.773 \| good	38.46 \| good	0.948 \| good	17.99 \| good	0.403 \| good
2025-12-08T01:00:00.000Z	54 \| moderate	10.731 \| good	40.978 \| good	33.899 \| good	0.607 \| good	25.418 \| good	0.536 \| good
2025-12-08T02:00:00.000Z	58 \| moderate	12.865 \| fine	31.556 \| good	27.785 \| good	0.549 \| good	31.674 \| good	0.644 \| good
2025-12-08T03:00:00.000Z	56 \| moderate	11.737 \| good	36.386 \| good	20.475 \| good	0.749 \| good	35.97 \| good	0.724 \| good
2025-12-08T04:00:00.000Z	60 \| moderate	13.672 \| fine	37.993 \| good	18.49 \| good	0.735 \| good	33.854 \| good	0.714 \| good
2025-12-08T05:00:00.000Z	62 \| moderate	14.768 \| fine	33.131 \| good	13.278 \| good	0.77 \| good	29.898 \| good	0.705 \| good
2025-12-08T06:00:00.000Z	66 \| moderate	16.714 \| fine	37.56 \| good	10.526 \| good	0.973 \| good	26.213 \| good	0.786 \| good
2025-12-08T07:00:00.000Z	67 \| moderate	18.31 \| fine	37.717 \| good	10.526 \| good	0.997 \| good	26.213 \| good	0.786 \| good
2025-12-08T08:00:00.000Z	67 \| moderate	18.453 \| fine	42.85 \| good	9.575 \| good	0.998 \| good	22.671 \| good	0.636 \| good
2025-12-08T09:00:00.000Z	66 \| moderate	16.672 \| fine	39.01 \| good	9.55 \| good	0.661 \| good	20.912 \| good	0.564 \| good
2025-12-08T10:00:00.000Z	66 \| moderate	17.492 \| fine	39.359 \| good	9.14 \| good	0.954 \| good	21.058 \| good	0.571 \| good
2025-12-08T11:00:00.000Z	64 \| moderate	15.799 \| fine	46.723 \| good	9.545 \| good	0.713 \| good	19.383 \| good	0.508 \| good
2025-12-08T12:00:00.000Z	64 \| moderate	16.223 \| fine	50.963 \| good	9.875 \| good	0.819 \| good	19.026 \| good	0.478 \| good
2025-12-08T13:00:00.000Z	64 \| moderate	16.456 \| fine	52.489 \| good	9.899 \| good	0.822 \| good	19.026 \| good	0.478 \| good
2025-12-08T14:00:00.000Z	44 \| good	7.918 \| good	18.556 \| good	9.855 \| good	0.781 \| good	19.637 \| good	0.591 \| good
2025-12-08T15:00:00.000Z	33 \| good	6.062 \| good	19.539 \| good	12.219 \| good	0.965 \| good	20.945 \| good	0.751 \| good
2025-12-08T16:00:00.000Z	44 \| good	8.437 \| good	23.564 \| good	13.199 \| good	1.256 \| good	22.218 \| good	0.85 \| good
2025-12-08T17:00:00.000Z	49 \| good	9.062 \| good	34.421 \| good	15.751 \| good	0.976 \| good	22.6 \| good	0.742 \| good
2025-12-08T18:00:00.000Z	52 \| moderate	9.717 \| good	41.942 \| good	18.992 \| good	0.701 \| good	21.321 \| good	0.445 \| good
2025-12-08T19:00:00.000Z	49 \| good	9.202 \| good	28.279 \| good	21.646 \| good	0.665 \| good	20.844 \| good	0.417 \| good
2025-12-08T20:00:00.000Z	49 \| good	8.742 \| good	29.023 \| good	23.352 \| good	0.535 \| good	21.746 \| good	0.401 \| good
2025-12-08T21:00:00.000Z	49 \| good	8.742 \| good	29.023 \| good	23.352 \| good	0.535 \| good	21.746 \| good	0.401 \| good
2025-12-08T22:00:00.000Z	34 \| good	4.59 \| good	19.787 \| good	37.275 \| good	3.294 \| good	18.367 \| good	0.205 \| good
2025-12-08T23:00:00.000Z	38 \| good	6.789 \| good	30.089 \| good	34.814 \| good	3.663 \| good	22.266 \| good	0.226 \| good
2025-12-09T00:00:00.000Z	54 \| moderate	11.182 \| good	49.363 \| good	25.333 \| good	4.032 \| good	26.166 \| good	0.246 \| good
2025-12-09T01:00:00.000Z	58 \| moderate	13.251 \| fine	59.665 \| fine	16.297 \| good	3.978 \| good	28.895 \| good	0.289 \| good
2025-12-09T02:00:00.000Z	56 \| moderate	12.215 \| fine	54.275 \| good	11.342 \| good	3.924 \| good	31.624 \| good	0.333 \| good
2025-12-09T03:00:00.000Z	52 \| moderate	9.885 \| good	44.088 \| good	8.681 \| good	3.87 \| good	34.353 \| good	0.376 \| good
2025-12-09T04:00:00.000Z	49 \| good	8.544 \| good	37.367 \| good	9.677 \| good	3.424 \| good	32.551 \| good	0.342 \| good
2025-12-09T05:00:00.000Z	44 \| good	8.025 \| good	35.402 \| good	10.318 \| good	2.977 \| good	30.748 \| good	0.308 \| good
2025-12-09T06:00:00.000Z	38 \| good	7.152 \| good	31.522 \| good	12.387 \| good	2.531 \| good	28.945 \| good	0.274 \| good
2025-12-09T07:00:00.000Z	38 \| good	7.194 \| good	31.802 \| good	11.394 \| good	2.226 \| good	26.532 \| good	0.241 \| good
2025-12-09T08:00:00.000Z	33 \| good	5.709 \| good	24.692 \| good	9.725 \| good	1.922 \| good	24.119 \| good	0.207 \| good
2025-12-09T09:00:00.000Z	27 \| good	4.855 \| good	21.39 \| good	9.003 \| good	1.617 \| good	21.705 \| good	0.173 \| good
2025-12-09T10:00:00.000Z	22 \| good	3.549 \| good	15.54 \| good	9.542 \| good	1.642 \| good	18.759 \| good	0.157 \| good
2025-12-09T11:00:00.000Z	16 \| good	3.214 \| good	13.869 \| good	8.179 \| good	1.666 \| good	15.813 \| good	0.14 \| good
2025-12-09T12:00:00.000Z	22 \| good	3.712 \| good	16.063 \| good	7.159 \| good	1.691 \| good	12.867 \| good	0.124 \| good
2025-12-09T13:00:00.000Z	14 \| good	1.753 \| good	7.195 \| good	7.317 \| good	1.825 \| good	15.42 \| good	0.138 \| good
2025-12-09T14:00:00.000Z	17 \| good	2.736 \| good	11.154 \| good	6.502 \| good	1.958 \| good	17.973 \| good	0.152 \| good
2025-12-09T15:00:00.000Z	20 \| good	3.094 \| good	12.786 \| good	7.053 \| good	2.092 \| good	20.526 \| good	0.166 \| good
2025-12-09T16:00:00.000Z	22 \| good	3.842 \| good	16.63 \| good	9.649 \| good	2.279 \| good	19.553 \| good	0.184 \| good
2025-12-09T17:00:00.000Z	22 \| good	4.439 \| good	19.303 \| good	15.507 \| good	2.465 \| good	18.58 \| good	0.203 \| good
2025-12-09T18:00:00.000Z	22 \| good	4.404 \| good	18.947 \| good	20.895 \| good	2.651 \| good	17.607 \| good	0.221 \| good
2025-12-09T19:00:00.000Z	24 \| good	4.34 \| good	18.703 \| good	25.941 \| good	2.872 \| good	16.632 \| good	0.206 \| good
2025-12-09T20:00:00.000Z	30 \| good	4.122 \| good	17.835 \| good	31.603 \| good	3.094 \| good	15.656 \| good	0.19 \| good
2025-12-09T21:00:00.000Z	31 \| good	3.876 \| good	17.094 \| good	33.302 \| good	3.315 \| good	14.68 \| good	0.175 \| good
2025-12-09T22:00:00.000Z	32 \| good	3.757 \| good	16.036 \| good	35.475 \| good	3.721 \| good	18.841 \| good	0.197 \| good
2025-12-09T23:00:00.000Z	31 \| good	5.167 \| good	22.56 \| good	32.931 \| good	4.127 \| good	23.002 \| good	0.22 \| good
2025-12-10T00:00:00.000Z	38 \| good	7.044 \| good	31.366 \| good	25.113 \| good	4.533 \| good	27.163 \| good	0.243 \| good
2025-12-10T01:00:00.000Z	52 \| moderate	10.236 \| good	45.399 \| good	12.781 \| good	4.535 \| good	30.33 \| good	0.306 \| good
2025-12-10T02:00:00.000Z	58 \| moderate	12.594 \| fine	56.443 \| fine	9.309 \| good	4.537 \| good	33.498 \| good	0.368 \| good
2025-12-10T03:00:00.000Z	56 \| moderate	12.381 \| fine	55.007 \| fine	7.175 \| good	4.54 \| good	36.665 \| good	0.431 \| good
2025-12-10T04:00:00.000Z	54 \| moderate	10.676 \| good	47.647 \| good	6.559 \| good	4.067 \| good	34.868 \| good	0.398 \| good
2025-12-10T05:00:00.000Z	44 \| good	8.334 \| good	37.113 \| good	7.002 \| good	3.595 \| good	33.07 \| good	0.366 \| good
2025-12-10T06:00:00.000Z	33 \| good	6.286 \| good	27.367 \| good	8.468 \| good	3.122 \| good	31.273 \| good	0.333 \| good
2025-12-10T07:00:00.000Z	28 \| good	5.099 \| good	22.165 \| good	8.822 \| good	2.687 \| good	29.815 \| good	0.294 \| good
2025-12-10T08:00:00.000Z	26 \| good	3.911 \| good	17.059 \| good	7.934 \| good	2.251 \| good	28.357 \| good	0.254 \| good
2025-12-10T09:00:00.000Z	25 \| good	3.537 \| good	15.344 \| good	7.82 \| good	1.816 \| good	26.899 \| good	0.215 \| good
2025-12-10T10:00:00.000Z	22 \| good	2.847 \| good	12.185 \| good	8.563 \| good	1.682 \| good	23.183 \| good	0.188 \| good
2025-12-10T11:00:00.000Z	18 \| good	2.222 \| good	8.803 \| good	8.141 \| good	1.549 \| good	19.466 \| good	0.162 \| good
2025-12-10T12:00:00.000Z	15 \| good	2.453 \| good	10.086 \| good	6.792 \| good	1.416 \| good	15.75 \| good	0.135 \| good
2025-12-10T13:00:00.000Z	17 \| good	1.136 \| good	4.768 \| good	5.812 \| good	1.555 \| good	17.537 \| good	0.147 \| good
2025-12-10T14:00:00.000Z	18 \| good	1.954 \| good	7.783 \| good	5.685 \| good	1.694 \| good	19.325 \| good	0.159 \| good
2025-12-10T15:00:00.000Z	20 \| good	2.402 \| good	9.825 \| good	6.127 \| good	1.833 \| good	21.113 \| good	0.17 \| good
2025-12-10T16:00:00.000Z	22 \| good	3.561 \| good	15.147 \| good	8.432 \| good	2.078 \| good	20.417 \| good	0.196 \| good
2025-12-10T17:00:00.000Z	22 \| good	4.458 \| good	19.415 \| good	12.417 \| good	2.323 \| good	19.722 \| good	0.221 \| good
2025-12-10T18:00:00.000Z	27 \| good	4.909 \| good	21.163 \| good	17.608 \| good	2.567 \| good	19.026 \| good	0.247 \| good
2025-12-10T19:00:00.000Z	27 \| good	5.292 \| good	22.927 \| good	24.407 \| good	2.874 \| good	18.582 \| good	0.232 \| good
2025-12-10T20:00:00.000Z	28 \| good	4.307 \| good	18.81 \| good	30.013 \| good	3.181 \| good	18.139 \| good	0.217 \| good
2025-12-10T21:00:00.000Z	31 \| good	4.229 \| good	18.585 \| good	32.558 \| good	3.488 \| good	17.695 \| good	0.203 \| 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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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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