What are the current PM10 levels at Diamond Bar, California?

The current PM10 levels in Diamond Bar, California are 19.396 μg/m3.

What are the current sulfur dioxide (SO2) levels at Diamond Bar, California?

The current sulfur dioxide (SO2) levels in Diamond Bar, California are 0.521 ppb.

What are the current ozone (O3) levels at Diamond Bar, California?

The current ozone (O3) levels at Diamond Bar, California is 45.702 ppm.

What are the current nitrogen dioxide (NO2) levels at Diamond Bar, California?

The current nitrogen dioxide (NO2) levels at Diamond Bar, California is 6.754 ppb.

Real-time air quality index in Diamond Bar, California today

Q: What are the current PM2.5 levels in Diamond Bar, California?

The measured PM2.5 levels in Diamond Bar, California at present are 3.401 μg/m3.

Stay updated with real-time air quality in Diamond Bar, 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

Diamond Bar, California

Last updated: ... (Local time)

Common air pollutants in Diamond Bar, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.40 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

19.40 μg/m³

155

255

425

605+

Ozone (O₃)

45.70 ppb

201

201+

Sulfur Dioxide (SO₂)

0.52 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.75 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Diamond Bar, California

Scroll To Air Quality Map

Track live Diamond Bar, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T00:00:00.000Z	38 \| good	3.605 \| good	17.937 \| good	41.103 \| good	0.45 \| good	1.335 \| good	0.121 \| good
2026-03-08T01:00:00.000Z	38 \| good	1.321 \| good	18.483 \| good	41.421 \| good	0.48 \| good	1.329 \| good	0.121 \| good
2026-03-08T02:00:00.000Z	38 \| good	0.718 \| good	15.608 \| good	41.144 \| good	0.452 \| good	1.601 \| good	0.137 \| good
2026-03-08T03:00:00.000Z	32 \| good	2.527 \| good	10.199 \| good	34.592 \| good	0.743 \| good	9.767 \| good	0.163 \| good
2026-03-08T04:00:00.000Z	38 \| good	3.57 \| good	16.064 \| good	41.469 \| good	0.497 \| good	5.718 \| good	0.224 \| good
2026-03-08T05:00:00.000Z	37 \| good	3.342 \| good	15.405 \| good	39.736 \| good	0.587 \| good	10.079 \| good	0.332 \| good
2026-03-08T06:00:00.000Z	37 \| good	2.926 \| good	13.324 \| good	40.062 \| good	0.454 \| good	7.447 \| good	0.412 \| good
2026-03-08T07:00:00.000Z	38 \| good	2.856 \| good	12.649 \| good	40.699 \| good	0.456 \| good	7.591 \| good	0.412 \| good
2026-03-08T08:00:00.000Z	38 \| good	2.836 \| good	13.916 \| good	40.6 \| good	0.456 \| good	5.938 \| good	0.304 \| good
2026-03-08T09:00:00.000Z	38 \| good	2.655 \| good	13.059 \| good	40.957 \| good	0.445 \| good	5.424 \| good	0.266 \| good
2026-03-08T10:00:00.000Z	38 \| good	2.513 \| good	14.745 \| good	40.793 \| good	0.449 \| good	5.52 \| good	0.266 \| good
2026-03-08T11:00:00.000Z	38 \| good	2.799 \| good	18.27 \| good	40.543 \| good	0.456 \| good	3.523 \| good	0.266 \| good
2026-03-08T12:00:00.000Z	37 \| good	2.964 \| good	13.913 \| good	39.65 \| good	0.427 \| good	9.265 \| good	0.298 \| good
2026-03-08T13:00:00.000Z	37 \| good	3.399 \| good	12.477 \| good	39.65 \| good	0.499 \| good	8.702 \| good	0.298 \| good
2026-03-08T14:00:00.000Z	35 \| good	1.122 \| good	11.492 \| good	38.029 \| good	0.499 \| good	5.658 \| good	0.481 \| good
2026-03-08T15:00:00.000Z	36 \| good	2.761 \| good	11.328 \| good	39.396 \| good	0.633 \| good	7.972 \| good	0.529 \| good
2026-03-08T16:00:00.000Z	36 \| good	2.253 \| good	10.031 \| good	39.018 \| good	0.588 \| good	6.311 \| good	0.519 \| good
2026-03-08T17:00:00.000Z	37 \| good	1.394 \| good	10.059 \| good	40.443 \| good	0.566 \| good	4.01 \| good	0.397 \| good
2026-03-08T18:00:00.000Z	39 \| good	1.895 \| good	10.476 \| good	42.157 \| good	0.523 \| good	2.546 \| good	0.29 \| good
2026-03-08T19:00:00.000Z	41 \| good	2.911 \| good	13.182 \| good	44.447 \| good	0.505 \| good	1.881 \| good	0.21 \| good
2026-03-08T20:00:00.000Z	43 \| good	1.162 \| good	13.013 \| good	46.494 \| good	0.481 \| good	2.071 \| good	0.173 \| good
2026-03-08T21:00:00.000Z	44 \| good	2.683 \| good	12.748 \| good	46.903 \| good	0.528 \| good	1.718 \| good	0.149 \| good
2026-03-08T22:00:00.000Z	44 \| good	2.357 \| good	11.971 \| good	47.684 \| good	0.69 \| good	2.149 \| good	0.149 \| good
2026-03-08T23:00:00.000Z	45 \| good	1.374 \| good	11.305 \| good	48.909 \| good	0.52 \| good	2.09 \| good	0.143 \| good
2026-03-09T00:00:00.000Z	45 \| good	2.199 \| good	11.333 \| good	49.326 \| good	0.481 \| good	1.95 \| good	0.164 \| good
2026-03-09T01:00:00.000Z	45 \| good	1.542 \| good	12.826 \| good	48.879 \| good	0.543 \| good	2.487 \| good	0.143 \| good
2026-03-09T02:00:00.000Z	44 \| good	0.827 \| good	13.188 \| good	46.739 \| good	0.546 \| good	3.944 \| good	0.159 \| good
2026-03-09T03:00:00.000Z	33 \| good	5.784 \| good	25.692 \| good	32.851 \| good	1.557 \| good	32.298 \| good	0.308 \| good
2026-03-09T04:00:00.000Z	40 \| good	3.942 \| good	15.095 \| good	42.65 \| good	0.525 \| good	17.386 \| good	0.468 \| good
2026-03-09T05:00:00.000Z	38 \| good	4.232 \| good	14.945 \| good	41.366 \| good	0.678 \| good	11.189 \| good	0.378 \| good
2026-03-09T06:00:00.000Z	38 \| good	3.537 \| good	15.819 \| good	40.76 \| good	0.455 \| good	6.278 \| good	0.301 \| good
2026-03-09T07:00:00.000Z	37 \| good	3.481 \| good	16.775 \| good	40.196 \| good	0.482 \| good	6.278 \| good	0.301 \| good
2026-03-09T08:00:00.000Z	31 \| good	3.966 \| good	17.486 \| good	32.696 \| good	0.666 \| good	11.664 \| good	0.332 \| good
2026-03-09T09:00:00.000Z	34 \| good	3.28 \| good	19.71 \| good	37.074 \| good	0.648 \| good	6.477 \| good	0.202 \| good
2026-03-09T10:00:00.000Z	32 \| good	4.43 \| good	21.5 \| good	34.943 \| good	0.577 \| good	2.027 \| good	0.189 \| good
2026-03-09T11:00:00.000Z	31 \| good	3.094 \| good	18.723 \| good	33.583 \| good	0.639 \| good	3.964 \| good	0.221 \| good
2026-03-09T12:00:00.000Z	31 \| good	1.367 \| good	17.591 \| good	34.227 \| good	0.541 \| good	5.492 \| good	0.289 \| good
2026-03-09T13:00:00.000Z	31 \| good	1.352 \| good	17.643 \| good	34.066 \| good	0.557 \| good	5.492 \| good	0.289 \| good
2026-03-09T14:00:00.000Z	30 \| good	2.215 \| good	16.673 \| good	31.937 \| good	0.662 \| good	7.797 \| good	0.553 \| good
2026-03-09T15:00:00.000Z	29 \| good	4.053 \| good	18.127 \| good	30.805 \| good	0.796 \| good	8.257 \| good	0.67 \| good
2026-03-09T16:00:00.000Z	28 \| good	3.781 \| good	21.118 \| good	30.118 \| good	0.853 \| good	8.717 \| good	0.559 \| good
2026-03-09T17:00:00.000Z	29 \| good	4.06 \| good	24.972 \| good	30.822 \| good	0.804 \| good	11.284 \| good	0.343 \| good
2026-03-09T18:00:00.000Z	35 \| good	4.11 \| good	22.783 \| good	38.345 \| good	0.677 \| good	6.3 \| good	0.294 \| good
2026-03-09T19:00:00.000Z	37 \| good	3.957 \| good	23.335 \| good	39.771 \| good	0.632 \| good	5.444 \| good	0.227 \| good
2026-03-09T20:00:00.000Z	40 \| good	4.112 \| good	22.182 \| good	43.065 \| good	0.61 \| good	3.35 \| good	0.227 \| good
2026-03-09T21:00:00.000Z	43 \| good	4.165 \| good	23.588 \| good	46.177 \| good	0.625 \| good	3.646 \| good	0.248 \| good
2026-03-09T22:00:00.000Z	45 \| good	3.722 \| good	22.176 \| good	49.148 \| good	0.526 \| good	3.767 \| good	0.232 \| good
2026-03-09T23:00:00.000Z	43 \| good	3.401 \| good	19.396 \| good	45.702 \| good	0.521 \| good	6.754 \| good	0.252 \| good
2026-03-10T00:00:00.000Z	48 \| good	6.107 \| good	27.15 \| good	51.783 \| good	2.384 \| good	5.217 \| good	0.145 \| good
2026-03-10T01:00:00.000Z	42 \| good	3.628 \| good	16.132 \| good	45.007 \| good	2.597 \| good	9.32 \| good	0.16 \| good
2026-03-10T02:00:00.000Z	33 \| good	4.529 \| good	19.497 \| good	35.524 \| good	2.809 \| good	13.424 \| good	0.175 \| good
2026-03-10T03:00:00.000Z	35 \| good	6.184 \| good	27.162 \| good	37.988 \| good	3.022 \| good	17.527 \| good	0.19 \| good
2026-03-10T04:00:00.000Z	32 \| good	3.669 \| good	16.101 \| good	34.701 \| good	3.312 \| good	22.505 \| good	0.209 \| good
2026-03-10T05:00:00.000Z	38 \| good	6.516 \| good	29.139 \| good	30.4 \| good	3.603 \| good	27.483 \| good	0.228 \| good
2026-03-10T06:00:00.000Z	49 \| good	8.876 \| good	39.168 \| good	27.054 \| good	3.893 \| good	32.461 \| good	0.247 \| good
2026-03-10T07:00:00.000Z	49 \| good	9.315 \| good	41.415 \| good	21.347 \| good	3.972 \| good	33.921 \| good	0.259 \| good
2026-03-10T08:00:00.000Z	56 \| moderate	12.358 \| fine	55.652 \| fine	18.053 \| good	4.051 \| good	35.38 \| good	0.271 \| good
2026-03-10T09:00:00.000Z	56 \| moderate	12.257 \| fine	55.094 \| fine	16.21 \| good	4.129 \| good	36.84 \| good	0.283 \| good
2026-03-10T10:00:00.000Z	54 \| moderate	11.421 \| good	50.684 \| good	15.793 \| good	4.074 \| good	35.114 \| good	0.278 \| good
2026-03-10T11:00:00.000Z	58 \| moderate	12.668 \| fine	56.283 \| fine	17.862 \| good	4.019 \| good	33.389 \| good	0.272 \| good
2026-03-10T12:00:00.000Z	58 \| moderate	13.487 \| fine	59.994 \| fine	11.724 \| good	3.964 \| good	31.663 \| good	0.267 \| good
2026-03-10T13:00:00.000Z	62 \| moderate	15.007 \| fine	67.27 \| fine	13.846 \| good	3.897 \| good	30.058 \| good	0.287 \| good
2026-03-10T14:00:00.000Z	56 \| moderate	12.098 \| good	54.548 \| good	18.013 \| good	3.83 \| good	28.453 \| good	0.308 \| good
2026-03-10T15:00:00.000Z	56 \| moderate	12.232 \| fine	55.32 \| fine	19.617 \| good	3.764 \| good	26.848 \| good	0.328 \| good
2026-03-10T16:00:00.000Z	52 \| moderate	10.023 \| good	44.381 \| good	26.544 \| good	4.117 \| good	21.971 \| good	0.278 \| good
2026-03-10T17:00:00.000Z	54 \| moderate	11.173 \| good	49.357 \| good	33.486 \| good	4.469 \| good	17.095 \| good	0.229 \| good
2026-03-10T18:00:00.000Z	52 \| moderate	9.653 \| good	43.2 \| good	32.521 \| good	4.822 \| good	12.219 \| good	0.179 \| good
2026-03-10T19:00:00.000Z	49 \| good	9.2 \| good	41.231 \| good	35.377 \| good	4.577 \| good	10.857 \| good	0.174 \| good
2026-03-10T20:00:00.000Z	49 \| good	8.677 \| good	38.044 \| good	39.979 \| good	4.331 \| good	9.496 \| good	0.168 \| good
2026-03-10T21:00:00.000Z	54 \| moderate	10.828 \| good	48.201 \| good	43.054 \| good	4.086 \| good	8.135 \| good	0.163 \| good
2026-03-10T22:00:00.000Z	52 \| moderate	10.206 \| good	45.312 \| good	47.599 \| good	3.999 \| good	8.123 \| good	0.161 \| good
2026-03-10T23:00:00.000Z	45 \| good	6.889 \| good	30.666 \| good	48.801 \| good	3.911 \| good	8.112 \| good	0.16 \| good
2026-03-11T00:00:00.000Z	46 \| good	6.019 \| good	27.042 \| good	50.396 \| good	3.824 \| good	8.1 \| good	0.158 \| good
2026-03-11T01:00:00.000Z	40 \| good	4.903 \| good	21.174 \| good	42.76 \| good	3.809 \| good	11.829 \| good	0.172 \| good
2026-03-11T02:00:00.000Z	31 \| good	4.641 \| good	20.275 \| good	33.197 \| good	3.795 \| good	15.558 \| good	0.186 \| good
2026-03-11T03:00:00.000Z	31 \| good	5.374 \| good	23.256 \| good	32.61 \| good	3.78 \| good	19.287 \| good	0.2 \| good
2026-03-11T04:00:00.000Z	27 \| good	4.959 \| good	21.463 \| good	24.942 \| good	3.983 \| good	24.374 \| good	0.218 \| good
2026-03-11T05:00:00.000Z	38 \| good	7.44 \| good	32.503 \| good	16.864 \| good	4.185 \| good	29.462 \| good	0.236 \| good
2026-03-11T06:00:00.000Z	75 \| moderate	22.406 \| fine	26.349 \| good	7.826 \| good	4.359 \| good	34.668 \| good	0.256 \| good
2026-03-11T07:00:00.000Z	52 \| moderate	10.18 \| good	44.975 \| good	15.118 \| good	4.269 \| good	35.017 \| good	0.267 \| good
2026-03-11T08:00:00.000Z	54 \| moderate	10.939 \| good	48.32 \| good	22.01 \| good	4.15 \| good	35.485 \| good	0.28 \| good
2026-03-11T09:00:00.000Z	49 \| good	9.097 \| good	40.23 \| good	17.273 \| good	4.032 \| good	35.954 \| good	0.294 \| good
2026-03-11T10:00:00.000Z	44 \| good	7.614 \| good	33.486 \| good	14.939 \| good	3.572 \| good	34.266 \| good	0.296 \| good
2026-03-11T11:00:00.000Z	44 \| good	8.224 \| good	36.206 \| good	15.548 \| good	3.111 \| good	32.579 \| good	0.298 \| good
2026-03-11T12:00:00.000Z	84 \| moderate	27.498 \| fine	28.855 \| good	2.835 \| good	2.628 \| good	30.764 \| good	0.301 \| good
2026-03-11T13:00:00.000Z	82 \| moderate	26.424 \| fine	27.736 \| good	4.487 \| good	2.777 \| good	28.829 \| good	0.307 \| good
2026-03-11T14:00:00.000Z	82 \| moderate	26.085 \| fine	27.487 \| good	6.139 \| good	2.926 \| good	26.893 \| good	0.313 \| good
2026-03-11T15:00:00.000Z	86 \| moderate	27.749 \| fine	29.424 \| good	7.792 \| good	3.076 \| good	24.957 \| good	0.319 \| good
2026-03-11T16:00:00.000Z	82 \| moderate	26.383 \| fine	28.228 \| good	19.05 \| good	3.341 \| good	20.998 \| good	0.286 \| good
2026-03-11T17:00:00.000Z	52 \| moderate	10.328 \| good	45.956 \| good	27.533 \| good	3.682 \| good	17.236 \| good	0.254 \| good
2026-03-11T18:00:00.000Z	66 \| moderate	16.654 \| fine	20.79 \| good	41.566 \| good	3.872 \| good	13.079 \| good	0.221 \| good
2026-03-11T19:00:00.000Z	64 \| moderate	16.131 \| fine	20.157 \| good	45.574 \| good	3.936 \| good	12.292 \| good	0.214 \| good
2026-03-11T20:00:00.000Z	64 \| moderate	15.896 \| fine	19.852 \| good	49.582 \| good	4 \| good	11.505 \| good	0.206 \| good
2026-03-11T21:00:00.000Z	64 \| moderate	15.561 \| fine	19.493 \| good	53.59 \| good	4.064 \| good	10.718 \| good	0.198 \| good
2026-03-11T22:00:00.000Z	62 \| moderate	15.196 \| fine	19.109 \| good	53.755 \| good	4.151 \| good	10.832 \| good	0.195 \| good
2026-03-11T23:00:00.000Z	62 \| moderate	14.895 \| fine	18.762 \| good	53.921 \| good	4.239 \| good	10.945 \| good	0.192 \| good

Diamond Bar

Empower business decisions with accurate air quality data

Diamond Bar, California air quality map: Real-time AQI near you

0.21ppm

How accurate is California, USA air quality data?

Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Diamond Bar, California updated?

Air quality data for Diamond Bar, California is updated on an hourly basis.

When did Diamond Bar, California experience the worst air quality in the last 24 hours?

The worst air quality in Diamond Bar, California was recorded at 10:00:00 on 2026-03-09.

When did Diamond Bar, California have its best air quality in the last 24 hours?

The best air quality in Diamond Bar, California was recorded at 04:00:00 on 2026-03-09.

What is the real-time air quality index for Diamond Bar, California?

The real-time air quality index in Diamond Bar, California is 43, currently categorized as Good.

Which pollutant is found most often in Diamond Bar, California?

The most common pollutant in Diamond Bar, California is O3.

What can I do if the air quality in Diamond Bar, California is poor?

If the air quality in Diamond Bar, California is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Diamond Bar, California?

The measured PM_2.5 levels in Diamond Bar, California at present are 3.401 μg/m³.

What are the current PM₁₀ levels at Diamond Bar, California?

The current PM₁₀ levels in Diamond Bar, California are 19.396 μg/m³.

What are the current carbon monoxide (CO) levels at Diamond Bar, California?

The current carbon monoxide (CO) level in Diamond Bar, California is 0.252 ppm.

What are the current sulfur dioxide (SO₂) levels at Diamond Bar, California?

The current sulfur dioxide (SO₂) levels in Diamond Bar, California are 0.521 ppb.

What are the current ozone (O₃) levels at Diamond Bar, California?

The current ozone (O₃) levels at Diamond Bar, California is 45.702 ppm.

What are the current nitrogen dioxide (NO₂) levels at Diamond Bar, California?

The current nitrogen dioxide (NO₂) levels at Diamond Bar, California is 6.754 ppb.

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