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

The PM10 concentration in Walnut, California is 32.951 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 0.866 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 58.207 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 5.915 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 6.071 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)

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)

6.07 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

32.95 μg/m³

155

255

425

605+

Ozone (O₃)

58.21 ppb

201

201+

Sulfur Dioxide (SO₂)

0.87 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.92 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.34 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
2026-04-22T04:00:00.000Z	34 \| good	3.206 \| good	14.575 \| good	37.496 \| good	0.553 \| good	4.413 \| good	0.276 \| good
2026-04-22T05:00:00.000Z	33 \| good	2.458 \| good	11.957 \| good	36.267 \| good	0.678 \| good	3.653 \| good	0.309 \| good
2026-04-22T06:00:00.000Z	33 \| good	2.563 \| good	11.945 \| good	36.267 \| good	0.687 \| good	3.653 \| good	0.309 \| good
2026-04-22T07:00:00.000Z	32 \| good	3.655 \| good	13.966 \| good	35.187 \| good	0.559 \| good	3.712 \| good	0.361 \| good
2026-04-22T08:00:00.000Z	28 \| good	3.749 \| good	14.758 \| good	30.025 \| good	0.552 \| good	6.445 \| good	0.32 \| good
2026-04-22T09:00:00.000Z	23 \| good	2.957 \| good	14.621 \| good	25.331 \| good	0.622 \| good	7.529 \| good	0.3 \| good
2026-04-22T10:00:00.000Z	21 \| good	2.851 \| good	11.303 \| good	23.041 \| good	0.564 \| good	8.812 \| good	0.287 \| good
2026-04-22T11:00:00.000Z	19 \| good	2.562 \| good	9.42 \| good	20.675 \| good	0.672 \| good	15.454 \| good	0.356 \| good
2026-04-22T12:00:00.000Z	22 \| good	4.145 \| good	14.827 \| good	18.862 \| good	0.572 \| good	15.438 \| good	0.456 \| good
2026-04-22T13:00:00.000Z	22 \| good	4.154 \| good	16.195 \| good	18.862 \| good	0.616 \| good	20.757 \| good	0.624 \| good
2026-04-22T14:00:00.000Z	22 \| good	3.692 \| good	15.41 \| good	18.573 \| good	0.553 \| good	13.372 \| good	0.676 \| good
2026-04-22T15:00:00.000Z	22 \| good	4.319 \| good	15.801 \| good	20.981 \| good	0.625 \| good	14.732 \| good	0.545 \| good
2026-04-22T16:00:00.000Z	24 \| good	4.455 \| good	21.808 \| good	25.755 \| good	0.632 \| good	10.672 \| good	0.4 \| good
2026-04-22T17:00:00.000Z	26 \| good	2.654 \| good	21.235 \| good	28.128 \| good	0.471 \| good	8.911 \| good	0.333 \| good
2026-04-22T18:00:00.000Z	31 \| good	2.992 \| good	21.993 \| good	33.191 \| good	0.545 \| good	5.011 \| good	0.312 \| good
2026-04-22T19:00:00.000Z	34 \| good	3.105 \| good	21.932 \| good	37.418 \| good	0.508 \| good	3.73 \| good	0.312 \| good
2026-04-22T20:00:00.000Z	39 \| good	4.275 \| good	26.901 \| good	41.948 \| good	0.548 \| good	3.511 \| good	0.279 \| good
2026-04-22T21:00:00.000Z	43 \| good	4.264 \| good	17.975 \| good	46.356 \| good	0.543 \| good	3.059 \| good	0.279 \| good
2026-04-22T22:00:00.000Z	46 \| good	4.165 \| good	34.145 \| good	49.865 \| good	0.575 \| good	2.965 \| good	0.26 \| good
2026-04-22T23:00:00.000Z	46 \| good	2.807 \| good	27.029 \| good	50.229 \| good	0.625 \| good	2.712 \| good	0.26 \| good
2026-04-23T00:00:00.000Z	45 \| good	2.697 \| good	21.268 \| good	49.165 \| good	0.675 \| good	2.834 \| good	0.276 \| good
2026-04-23T01:00:00.000Z	44 \| good	3.733 \| good	23.983 \| good	47.714 \| good	0.657 \| good	3.89 \| good	0.276 \| good
2026-04-23T02:00:00.000Z	43 \| good	4.235 \| good	22.355 \| good	45.592 \| good	0.677 \| good	4.654 \| good	0.276 \| good
2026-04-23T03:00:00.000Z	41 \| good	3.414 \| good	18.283 \| good	44.328 \| good	0.658 \| good	5.208 \| good	0.309 \| good
2026-04-23T04:00:00.000Z	38 \| good	2.708 \| good	14.673 \| good	41.123 \| good	0.631 \| good	4.997 \| good	0.328 \| good
2026-04-23T05:00:00.000Z	34 \| good	2.098 \| good	21.669 \| good	36.55 \| good	0.763 \| good	5.402 \| good	0.328 \| good
2026-04-23T06:00:00.000Z	31 \| good	3.51 \| good	20.763 \| good	33.628 \| good	0.629 \| good	6.311 \| good	0.413 \| good
2026-04-23T07:00:00.000Z	29 \| good	3.841 \| good	25.487 \| good	30.529 \| good	0.587 \| good	5.9 \| good	0.432 \| good
2026-04-23T08:00:00.000Z	27 \| good	4.493 \| good	20.24 \| good	28.758 \| good	0.603 \| good	6.409 \| good	0.35 \| good
2026-04-23T09:00:00.000Z	23 \| good	4.455 \| good	22.615 \| good	25.272 \| good	0.574 \| good	6.302 \| good	0.297 \| good
2026-04-23T10:00:00.000Z	22 \| good	3.858 \| good	18.856 \| good	23.473 \| good	0.532 \| good	7.911 \| good	0.326 \| good
2026-04-23T11:00:00.000Z	27 \| good	5.439 \| good	20.481 \| good	20.685 \| good	0.679 \| good	10.149 \| good	0.314 \| good
2026-04-23T12:00:00.000Z	27 \| good	4.832 \| good	18.548 \| good	20.101 \| good	0.526 \| good	11.77 \| good	0.326 \| good
2026-04-23T13:00:00.000Z	27 \| good	5.305 \| good	23.32 \| good	20.101 \| good	0.641 \| good	13.992 \| good	0.513 \| good
2026-04-23T14:00:00.000Z	27 \| good	5.16 \| good	20.46 \| good	20.919 \| good	0.606 \| good	16.629 \| good	0.599 \| good
2026-04-23T15:00:00.000Z	27 \| good	4.56 \| good	24.534 \| good	25.357 \| good	0.639 \| good	12.291 \| good	0.5 \| good
2026-04-23T16:00:00.000Z	33 \| good	5.769 \| good	23.293 \| good	30.239 \| good	0.664 \| good	6.797 \| good	0.413 \| good
2026-04-23T17:00:00.000Z	38 \| good	7.36 \| good	28.041 \| good	34.619 \| good	0.62 \| good	3.526 \| good	0.36 \| good
2026-04-23T18:00:00.000Z	38 \| good	6.742 \| good	38.362 \| good	39.309 \| good	0.61 \| good	3.59 \| good	0.348 \| good
2026-04-23T19:00:00.000Z	41 \| good	5.616 \| good	41.342 \| good	44.227 \| good	0.65 \| good	3.344 \| good	0.324 \| good
2026-04-23T20:00:00.000Z	44 \| good	5.457 \| good	40.441 \| good	47.939 \| good	0.652 \| good	3.74 \| good	0.295 \| good
2026-04-23T21:00:00.000Z	55 \| moderate	6.657 \| good	63.416 \| fine	51.693 \| good	0.661 \| good	3.373 \| good	0.333 \| good
2026-04-23T22:00:00.000Z	51 \| moderate	8.109 \| good	43.16 \| good	54.512 \| good	0.709 \| good	3.697 \| good	0.333 \| good
2026-04-23T23:00:00.000Z	58 \| moderate	7.364 \| good	37.937 \| good	57.413 \| fine	0.742 \| good	5.412 \| good	0.333 \| good
2026-04-24T00:00:00.000Z	64 \| moderate	7.491 \| good	36.175 \| good	59.271 \| fine	0.733 \| good	6.49 \| good	0.348 \| good
2026-04-24T01:00:00.000Z	67 \| moderate	6.558 \| good	33.603 \| good	59.535 \| fine	0.754 \| good	6.772 \| good	0.33 \| good
2026-04-24T02:00:00.000Z	61 \| moderate	6.071 \| good	32.951 \| good	58.207 \| fine	0.866 \| good	5.915 \| good	0.342 \| good
2026-04-24T03:00:00.000Z	52 \| moderate	9.769 \| good	43.354 \| good	45.622 \| good	4.412 \| good	14.79 \| good	0.184 \| good
2026-04-24T03:00:00.000Z	61 \| moderate	6.071 \| good	32.951 \| good	58.207 \| fine	0.866 \| good	5.915 \| good	0.342 \| good
2026-04-24T04:00:00.000Z	49 \| good	8.71 \| good	38.449 \| good	38.872 \| good	4.441 \| good	17.732 \| good	0.195 \| good
2026-04-24T05:00:00.000Z	49 \| good	9.105 \| good	40.107 \| good	32.37 \| good	4.591 \| good	20.45 \| good	0.205 \| good
2026-04-24T06:00:00.000Z	49 \| good	9.277 \| good	40.699 \| good	26.325 \| good	4.741 \| good	23.168 \| good	0.215 \| good
2026-04-24T07:00:00.000Z	52 \| moderate	9.58 \| good	42.714 \| good	23.35 \| good	4.682 \| good	23.49 \| good	0.22 \| good
2026-04-24T08:00:00.000Z	52 \| moderate	10.318 \| good	45.664 \| good	21.176 \| good	4.624 \| good	23.812 \| good	0.225 \| good
2026-04-24T09:00:00.000Z	54 \| moderate	10.609 \| good	47.072 \| good	19.334 \| good	4.565 \| good	24.134 \| good	0.23 \| good
2026-04-24T10:00:00.000Z	54 \| moderate	11.096 \| good	49.055 \| good	18.618 \| good	4.605 \| good	23.929 \| good	0.23 \| good
2026-04-24T11:00:00.000Z	54 \| moderate	11.27 \| good	50.073 \| good	17.666 \| good	4.645 \| good	23.725 \| good	0.23 \| good
2026-04-24T12:00:00.000Z	58 \| moderate	12.699 \| fine	57.6 \| fine	17.104 \| good	4.684 \| good	23.52 \| good	0.229 \| good
2026-04-24T13:00:00.000Z	64 \| moderate	15.583 \| fine	69.623 \| fine	16.703 \| good	4.781 \| good	21.299 \| good	0.232 \| good
2026-04-24T14:00:00.000Z	64 \| moderate	15.704 \| fine	70.284 \| fine	20.99 \| good	4.878 \| good	19.078 \| good	0.235 \| good
2026-04-24T15:00:00.000Z	62 \| moderate	15.109 \| fine	67.567 \| fine	34.179 \| good	4.975 \| good	16.857 \| good	0.237 \| good
2026-04-24T16:00:00.000Z	54 \| moderate	11.464 \| good	50.756 \| good	42.591 \| good	4.484 \| good	13.266 \| good	0.213 \| good
2026-04-24T17:00:00.000Z	49 \| good	8.623 \| good	37.488 \| good	48.517 \| good	3.993 \| good	9.675 \| good	0.189 \| good
2026-04-24T18:00:00.000Z	50 \| good	6.751 \| good	30.04 \| good	54.162 \| good	3.502 \| good	6.084 \| good	0.165 \| good
2026-04-24T19:00:00.000Z	61 \| moderate	5.653 \| good	24.604 \| good	57.527 \| fine	3.061 \| good	5.168 \| good	0.159 \| good
2026-04-24T20:00:00.000Z	61 \| moderate	5.008 \| good	21.856 \| good	57.844 \| fine	2.62 \| good	4.252 \| good	0.152 \| good
2026-04-24T21:00:00.000Z	64 \| moderate	5.234 \| good	22.572 \| good	59.302 \| fine	2.179 \| good	3.336 \| good	0.146 \| good
2026-04-24T22:00:00.000Z	64 \| moderate	4.727 \| good	20.323 \| good	59.261 \| fine	2.228 \| good	4.129 \| good	0.147 \| good
2026-04-24T23:00:00.000Z	64 \| moderate	4.18 \| good	18.136 \| good	59.29 \| fine	2.276 \| good	4.923 \| good	0.148 \| good
2026-04-25T00:00:00.000Z	61 \| moderate	5.364 \| good	23.24 \| good	57.558 \| fine	2.325 \| good	5.716 \| good	0.149 \| good
2026-04-25T01:00:00.000Z	51 \| moderate	6.038 \| good	26.627 \| good	54.52 \| good	2.564 \| good	7.939 \| good	0.158 \| good
2026-04-25T02:00:00.000Z	49 \| good	9.351 \| good	41.876 \| good	50.732 \| good	2.803 \| good	10.162 \| good	0.166 \| good
2026-04-25T03:00:00.000Z	52 \| moderate	10.352 \| good	45.924 \| good	47.871 \| good	3.041 \| good	12.384 \| good	0.175 \| good
2026-04-25T04:00:00.000Z	49 \| good	9.447 \| good	42.101 \| good	41.588 \| good	3.214 \| good	14.305 \| good	0.181 \| good
2026-04-25T05:00:00.000Z	49 \| good	8.557 \| good	37.604 \| good	39.342 \| good	3.386 \| good	16.227 \| good	0.188 \| good
2026-04-25T06:00:00.000Z	35 \| good	5.834 \| good	25.196 \| good	38.149 \| good	3.559 \| good	18.148 \| good	0.195 \| good
2026-04-25T07:00:00.000Z	34 \| good	5.138 \| good	22.191 \| good	37.461 \| good	3.424 \| good	16.496 \| good	0.19 \| good
2026-04-25T08:00:00.000Z	33 \| good	5.472 \| good	23.608 \| good	36.119 \| good	3.289 \| good	14.845 \| good	0.184 \| good
2026-04-25T09:00:00.000Z	30 \| good	5.464 \| good	23.578 \| good	32.489 \| good	3.155 \| good	13.193 \| good	0.179 \| good
2026-04-25T10:00:00.000Z	28 \| good	5.126 \| good	21.893 \| good	30.173 \| good	2.926 \| good	11.769 \| good	0.171 \| good
2026-04-25T11:00:00.000Z	28 \| good	4.437 \| good	19.501 \| good	29.538 \| good	2.698 \| good	10.344 \| good	0.163 \| good
2026-04-25T12:00:00.000Z	27 \| good	4.559 \| good	19.666 \| good	27.222 \| good	2.47 \| good	8.92 \| good	0.155 \| good
2026-04-25T13:00:00.000Z	25 \| good	2.985 \| good	12.902 \| good	26.953 \| good	2.128 \| good	7.834 \| good	0.15 \| good
2026-04-25T14:00:00.000Z	29 \| good	3.828 \| good	16.907 \| good	30.556 \| good	1.786 \| good	6.749 \| good	0.146 \| good
2026-04-25T15:00:00.000Z	35 \| good	3.151 \| good	13.164 \| good	38.404 \| good	1.444 \| good	5.663 \| good	0.141 \| good
2026-04-25T16:00:00.000Z	38 \| good	3.994 \| good	17.5 \| good	40.847 \| good	1.378 \| good	4.941 \| good	0.14 \| good
2026-04-25T17:00:00.000Z	40 \| good	3.566 \| good	15.475 \| good	43.471 \| good	1.312 \| good	4.219 \| good	0.138 \| good
2026-04-25T18:00:00.000Z	44 \| good	3.707 \| good	16.415 \| good	47.622 \| good	1.246 \| good	3.498 \| good	0.137 \| good
2026-04-25T19:00:00.000Z	48 \| good	3.568 \| good	15.428 \| good	51.96 \| good	1.211 \| good	3.193 \| good	0.134 \| good
2026-04-25T20:00:00.000Z	49 \| good	4.498 \| good	19.697 \| good	53.411 \| good	1.175 \| good	2.889 \| good	0.132 \| good
2026-04-25T21:00:00.000Z	49 \| good	5.183 \| good	22.155 \| good	53.129 \| good	1.14 \| good	2.584 \| good	0.13 \| good
2026-04-25T22:00:00.000Z	49 \| good	5.063 \| good	22.083 \| good	52.759 \| good	1.083 \| good	2.827 \| good	0.13 \| good
2026-04-25T23:00:00.000Z	49 \| good	3.535 \| good	15.294 \| good	52.828 \| good	1.025 \| good	3.069 \| good	0.129 \| good
2026-04-26T00:00:00.000Z	52 \| moderate	10.305 \| good	17.311 \| good	50.468 \| good	0.982 \| good	3.346 \| good	0.128 \| good
2026-04-26T01:00:00.000Z	44 \| good	3.498 \| good	15.523 \| good	47.543 \| good	1.121 \| good	4.24 \| good	0.13 \| good
2026-04-26T02:00:00.000Z	39 \| good	5.302 \| good	22.597 \| good	42.451 \| good	1.273 \| good	5.169 \| good	0.131 \| good
2026-04-26T03:00:00.000Z	41 \| good	6.024 \| good	26.977 \| good	43.523 \| good	1.426 \| good	6.097 \| good	0.133 \| good

Walnut

Get reliable air quality data to drive your business

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

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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 01:00:00 on 2026-04-24.

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 10:00:00 on 2026-04-23.

What is the AQI in Walnut, California right now?

As of now, the AQI in Walnut, California is 61, indicating Moderate conditions.

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

Walnut, California air has the highest levels of O3.

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 6.071 μg/m³.

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

The PM₁₀ concentration in Walnut, California is 32.951 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 0.342 ppm.

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

Currently, Walnut, California has a sulfur dioxide (SO₂) concentration of 0.866 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 58.207 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 5.915 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T04:00:00.000Z	34 \| good	3.206 \| good	14.575 \| good	37.496 \| good	0.553 \| good	4.413 \| good	0.276 \| good
2026-04-22T05:00:00.000Z	33 \| good	2.458 \| good	11.957 \| good	36.267 \| good	0.678 \| good	3.653 \| good	0.309 \| good
2026-04-22T06:00:00.000Z	33 \| good	2.563 \| good	11.945 \| good	36.267 \| good	0.687 \| good	3.653 \| good	0.309 \| good
2026-04-22T07:00:00.000Z	32 \| good	3.655 \| good	13.966 \| good	35.187 \| good	0.559 \| good	3.712 \| good	0.361 \| good
2026-04-22T08:00:00.000Z	28 \| good	3.749 \| good	14.758 \| good	30.025 \| good	0.552 \| good	6.445 \| good	0.32 \| good
2026-04-22T09:00:00.000Z	23 \| good	2.957 \| good	14.621 \| good	25.331 \| good	0.622 \| good	7.529 \| good	0.3 \| good
2026-04-22T10:00:00.000Z	21 \| good	2.851 \| good	11.303 \| good	23.041 \| good	0.564 \| good	8.812 \| good	0.287 \| good
2026-04-22T11:00:00.000Z	19 \| good	2.562 \| good	9.42 \| good	20.675 \| good	0.672 \| good	15.454 \| good	0.356 \| good
2026-04-22T12:00:00.000Z	22 \| good	4.145 \| good	14.827 \| good	18.862 \| good	0.572 \| good	15.438 \| good	0.456 \| good
2026-04-22T13:00:00.000Z	22 \| good	4.154 \| good	16.195 \| good	18.862 \| good	0.616 \| good	20.757 \| good	0.624 \| good
2026-04-22T14:00:00.000Z	22 \| good	3.692 \| good	15.41 \| good	18.573 \| good	0.553 \| good	13.372 \| good	0.676 \| good
2026-04-22T15:00:00.000Z	22 \| good	4.319 \| good	15.801 \| good	20.981 \| good	0.625 \| good	14.732 \| good	0.545 \| good
2026-04-22T16:00:00.000Z	24 \| good	4.455 \| good	21.808 \| good	25.755 \| good	0.632 \| good	10.672 \| good	0.4 \| good
2026-04-22T17:00:00.000Z	26 \| good	2.654 \| good	21.235 \| good	28.128 \| good	0.471 \| good	8.911 \| good	0.333 \| good
2026-04-22T18:00:00.000Z	31 \| good	2.992 \| good	21.993 \| good	33.191 \| good	0.545 \| good	5.011 \| good	0.312 \| good
2026-04-22T19:00:00.000Z	34 \| good	3.105 \| good	21.932 \| good	37.418 \| good	0.508 \| good	3.73 \| good	0.312 \| good
2026-04-22T20:00:00.000Z	39 \| good	4.275 \| good	26.901 \| good	41.948 \| good	0.548 \| good	3.511 \| good	0.279 \| good
2026-04-22T21:00:00.000Z	43 \| good	4.264 \| good	17.975 \| good	46.356 \| good	0.543 \| good	3.059 \| good	0.279 \| good
2026-04-22T22:00:00.000Z	46 \| good	4.165 \| good	34.145 \| good	49.865 \| good	0.575 \| good	2.965 \| good	0.26 \| good
2026-04-22T23:00:00.000Z	46 \| good	2.807 \| good	27.029 \| good	50.229 \| good	0.625 \| good	2.712 \| good	0.26 \| good
2026-04-23T00:00:00.000Z	45 \| good	2.697 \| good	21.268 \| good	49.165 \| good	0.675 \| good	2.834 \| good	0.276 \| good
2026-04-23T01:00:00.000Z	44 \| good	3.733 \| good	23.983 \| good	47.714 \| good	0.657 \| good	3.89 \| good	0.276 \| good
2026-04-23T02:00:00.000Z	43 \| good	4.235 \| good	22.355 \| good	45.592 \| good	0.677 \| good	4.654 \| good	0.276 \| good
2026-04-23T03:00:00.000Z	41 \| good	3.414 \| good	18.283 \| good	44.328 \| good	0.658 \| good	5.208 \| good	0.309 \| good
2026-04-23T04:00:00.000Z	38 \| good	2.708 \| good	14.673 \| good	41.123 \| good	0.631 \| good	4.997 \| good	0.328 \| good
2026-04-23T05:00:00.000Z	34 \| good	2.098 \| good	21.669 \| good	36.55 \| good	0.763 \| good	5.402 \| good	0.328 \| good
2026-04-23T06:00:00.000Z	31 \| good	3.51 \| good	20.763 \| good	33.628 \| good	0.629 \| good	6.311 \| good	0.413 \| good
2026-04-23T07:00:00.000Z	29 \| good	3.841 \| good	25.487 \| good	30.529 \| good	0.587 \| good	5.9 \| good	0.432 \| good
2026-04-23T08:00:00.000Z	27 \| good	4.493 \| good	20.24 \| good	28.758 \| good	0.603 \| good	6.409 \| good	0.35 \| good
2026-04-23T09:00:00.000Z	23 \| good	4.455 \| good	22.615 \| good	25.272 \| good	0.574 \| good	6.302 \| good	0.297 \| good
2026-04-23T10:00:00.000Z	22 \| good	3.858 \| good	18.856 \| good	23.473 \| good	0.532 \| good	7.911 \| good	0.326 \| good
2026-04-23T11:00:00.000Z	27 \| good	5.439 \| good	20.481 \| good	20.685 \| good	0.679 \| good	10.149 \| good	0.314 \| good
2026-04-23T12:00:00.000Z	27 \| good	4.832 \| good	18.548 \| good	20.101 \| good	0.526 \| good	11.77 \| good	0.326 \| good
2026-04-23T13:00:00.000Z	27 \| good	5.305 \| good	23.32 \| good	20.101 \| good	0.641 \| good	13.992 \| good	0.513 \| good
2026-04-23T14:00:00.000Z	27 \| good	5.16 \| good	20.46 \| good	20.919 \| good	0.606 \| good	16.629 \| good	0.599 \| good
2026-04-23T15:00:00.000Z	27 \| good	4.56 \| good	24.534 \| good	25.357 \| good	0.639 \| good	12.291 \| good	0.5 \| good
2026-04-23T16:00:00.000Z	33 \| good	5.769 \| good	23.293 \| good	30.239 \| good	0.664 \| good	6.797 \| good	0.413 \| good
2026-04-23T17:00:00.000Z	38 \| good	7.36 \| good	28.041 \| good	34.619 \| good	0.62 \| good	3.526 \| good	0.36 \| good
2026-04-23T18:00:00.000Z	38 \| good	6.742 \| good	38.362 \| good	39.309 \| good	0.61 \| good	3.59 \| good	0.348 \| good
2026-04-23T19:00:00.000Z	41 \| good	5.616 \| good	41.342 \| good	44.227 \| good	0.65 \| good	3.344 \| good	0.324 \| good
2026-04-23T20:00:00.000Z	44 \| good	5.457 \| good	40.441 \| good	47.939 \| good	0.652 \| good	3.74 \| good	0.295 \| good
2026-04-23T21:00:00.000Z	55 \| moderate	6.657 \| good	63.416 \| fine	51.693 \| good	0.661 \| good	3.373 \| good	0.333 \| good
2026-04-23T22:00:00.000Z	51 \| moderate	8.109 \| good	43.16 \| good	54.512 \| good	0.709 \| good	3.697 \| good	0.333 \| good
2026-04-23T23:00:00.000Z	58 \| moderate	7.364 \| good	37.937 \| good	57.413 \| fine	0.742 \| good	5.412 \| good	0.333 \| good
2026-04-24T00:00:00.000Z	64 \| moderate	7.491 \| good	36.175 \| good	59.271 \| fine	0.733 \| good	6.49 \| good	0.348 \| good
2026-04-24T01:00:00.000Z	67 \| moderate	6.558 \| good	33.603 \| good	59.535 \| fine	0.754 \| good	6.772 \| good	0.33 \| good
2026-04-24T02:00:00.000Z	61 \| moderate	6.071 \| good	32.951 \| good	58.207 \| fine	0.866 \| good	5.915 \| good	0.342 \| good
2026-04-24T03:00:00.000Z	52 \| moderate	9.769 \| good	43.354 \| good	45.622 \| good	4.412 \| good	14.79 \| good	0.184 \| good
2026-04-24T03:00:00.000Z	61 \| moderate	6.071 \| good	32.951 \| good	58.207 \| fine	0.866 \| good	5.915 \| good	0.342 \| good
2026-04-24T04:00:00.000Z	49 \| good	8.71 \| good	38.449 \| good	38.872 \| good	4.441 \| good	17.732 \| good	0.195 \| good
2026-04-24T05:00:00.000Z	49 \| good	9.105 \| good	40.107 \| good	32.37 \| good	4.591 \| good	20.45 \| good	0.205 \| good
2026-04-24T06:00:00.000Z	49 \| good	9.277 \| good	40.699 \| good	26.325 \| good	4.741 \| good	23.168 \| good	0.215 \| good
2026-04-24T07:00:00.000Z	52 \| moderate	9.58 \| good	42.714 \| good	23.35 \| good	4.682 \| good	23.49 \| good	0.22 \| good
2026-04-24T08:00:00.000Z	52 \| moderate	10.318 \| good	45.664 \| good	21.176 \| good	4.624 \| good	23.812 \| good	0.225 \| good
2026-04-24T09:00:00.000Z	54 \| moderate	10.609 \| good	47.072 \| good	19.334 \| good	4.565 \| good	24.134 \| good	0.23 \| good
2026-04-24T10:00:00.000Z	54 \| moderate	11.096 \| good	49.055 \| good	18.618 \| good	4.605 \| good	23.929 \| good	0.23 \| good
2026-04-24T11:00:00.000Z	54 \| moderate	11.27 \| good	50.073 \| good	17.666 \| good	4.645 \| good	23.725 \| good	0.23 \| good
2026-04-24T12:00:00.000Z	58 \| moderate	12.699 \| fine	57.6 \| fine	17.104 \| good	4.684 \| good	23.52 \| good	0.229 \| good
2026-04-24T13:00:00.000Z	64 \| moderate	15.583 \| fine	69.623 \| fine	16.703 \| good	4.781 \| good	21.299 \| good	0.232 \| good
2026-04-24T14:00:00.000Z	64 \| moderate	15.704 \| fine	70.284 \| fine	20.99 \| good	4.878 \| good	19.078 \| good	0.235 \| good
2026-04-24T15:00:00.000Z	62 \| moderate	15.109 \| fine	67.567 \| fine	34.179 \| good	4.975 \| good	16.857 \| good	0.237 \| good
2026-04-24T16:00:00.000Z	54 \| moderate	11.464 \| good	50.756 \| good	42.591 \| good	4.484 \| good	13.266 \| good	0.213 \| good
2026-04-24T17:00:00.000Z	49 \| good	8.623 \| good	37.488 \| good	48.517 \| good	3.993 \| good	9.675 \| good	0.189 \| good
2026-04-24T18:00:00.000Z	50 \| good	6.751 \| good	30.04 \| good	54.162 \| good	3.502 \| good	6.084 \| good	0.165 \| good
2026-04-24T19:00:00.000Z	61 \| moderate	5.653 \| good	24.604 \| good	57.527 \| fine	3.061 \| good	5.168 \| good	0.159 \| good
2026-04-24T20:00:00.000Z	61 \| moderate	5.008 \| good	21.856 \| good	57.844 \| fine	2.62 \| good	4.252 \| good	0.152 \| good
2026-04-24T21:00:00.000Z	64 \| moderate	5.234 \| good	22.572 \| good	59.302 \| fine	2.179 \| good	3.336 \| good	0.146 \| good
2026-04-24T22:00:00.000Z	64 \| moderate	4.727 \| good	20.323 \| good	59.261 \| fine	2.228 \| good	4.129 \| good	0.147 \| good
2026-04-24T23:00:00.000Z	64 \| moderate	4.18 \| good	18.136 \| good	59.29 \| fine	2.276 \| good	4.923 \| good	0.148 \| good
2026-04-25T00:00:00.000Z	61 \| moderate	5.364 \| good	23.24 \| good	57.558 \| fine	2.325 \| good	5.716 \| good	0.149 \| good
2026-04-25T01:00:00.000Z	51 \| moderate	6.038 \| good	26.627 \| good	54.52 \| good	2.564 \| good	7.939 \| good	0.158 \| good
2026-04-25T02:00:00.000Z	49 \| good	9.351 \| good	41.876 \| good	50.732 \| good	2.803 \| good	10.162 \| good	0.166 \| good
2026-04-25T03:00:00.000Z	52 \| moderate	10.352 \| good	45.924 \| good	47.871 \| good	3.041 \| good	12.384 \| good	0.175 \| good
2026-04-25T04:00:00.000Z	49 \| good	9.447 \| good	42.101 \| good	41.588 \| good	3.214 \| good	14.305 \| good	0.181 \| good
2026-04-25T05:00:00.000Z	49 \| good	8.557 \| good	37.604 \| good	39.342 \| good	3.386 \| good	16.227 \| good	0.188 \| good
2026-04-25T06:00:00.000Z	35 \| good	5.834 \| good	25.196 \| good	38.149 \| good	3.559 \| good	18.148 \| good	0.195 \| good
2026-04-25T07:00:00.000Z	34 \| good	5.138 \| good	22.191 \| good	37.461 \| good	3.424 \| good	16.496 \| good	0.19 \| good
2026-04-25T08:00:00.000Z	33 \| good	5.472 \| good	23.608 \| good	36.119 \| good	3.289 \| good	14.845 \| good	0.184 \| good
2026-04-25T09:00:00.000Z	30 \| good	5.464 \| good	23.578 \| good	32.489 \| good	3.155 \| good	13.193 \| good	0.179 \| good
2026-04-25T10:00:00.000Z	28 \| good	5.126 \| good	21.893 \| good	30.173 \| good	2.926 \| good	11.769 \| good	0.171 \| good
2026-04-25T11:00:00.000Z	28 \| good	4.437 \| good	19.501 \| good	29.538 \| good	2.698 \| good	10.344 \| good	0.163 \| good
2026-04-25T12:00:00.000Z	27 \| good	4.559 \| good	19.666 \| good	27.222 \| good	2.47 \| good	8.92 \| good	0.155 \| good
2026-04-25T13:00:00.000Z	25 \| good	2.985 \| good	12.902 \| good	26.953 \| good	2.128 \| good	7.834 \| good	0.15 \| good
2026-04-25T14:00:00.000Z	29 \| good	3.828 \| good	16.907 \| good	30.556 \| good	1.786 \| good	6.749 \| good	0.146 \| good
2026-04-25T15:00:00.000Z	35 \| good	3.151 \| good	13.164 \| good	38.404 \| good	1.444 \| good	5.663 \| good	0.141 \| good
2026-04-25T16:00:00.000Z	38 \| good	3.994 \| good	17.5 \| good	40.847 \| good	1.378 \| good	4.941 \| good	0.14 \| good
2026-04-25T17:00:00.000Z	40 \| good	3.566 \| good	15.475 \| good	43.471 \| good	1.312 \| good	4.219 \| good	0.138 \| good
2026-04-25T18:00:00.000Z	44 \| good	3.707 \| good	16.415 \| good	47.622 \| good	1.246 \| good	3.498 \| good	0.137 \| good
2026-04-25T19:00:00.000Z	48 \| good	3.568 \| good	15.428 \| good	51.96 \| good	1.211 \| good	3.193 \| good	0.134 \| good
2026-04-25T20:00:00.000Z	49 \| good	4.498 \| good	19.697 \| good	53.411 \| good	1.175 \| good	2.889 \| good	0.132 \| good
2026-04-25T21:00:00.000Z	49 \| good	5.183 \| good	22.155 \| good	53.129 \| good	1.14 \| good	2.584 \| good	0.13 \| good
2026-04-25T22:00:00.000Z	49 \| good	5.063 \| good	22.083 \| good	52.759 \| good	1.083 \| good	2.827 \| good	0.13 \| good
2026-04-25T23:00:00.000Z	49 \| good	3.535 \| good	15.294 \| good	52.828 \| good	1.025 \| good	3.069 \| good	0.129 \| good
2026-04-26T00:00:00.000Z	52 \| moderate	10.305 \| good	17.311 \| good	50.468 \| good	0.982 \| good	3.346 \| good	0.128 \| good
2026-04-26T01:00:00.000Z	44 \| good	3.498 \| good	15.523 \| good	47.543 \| good	1.121 \| good	4.24 \| good	0.13 \| good
2026-04-26T02:00:00.000Z	39 \| good	5.302 \| good	22.597 \| good	42.451 \| good	1.273 \| good	5.169 \| good	0.131 \| good
2026-04-26T03:00:00.000Z	41 \| good	6.024 \| good	26.977 \| good	43.523 \| good	1.426 \| good	6.097 \| good	0.133 \| 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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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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