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

The current PM10 levels in Diamond Bar, California are 7.996 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 0.338 ppb.

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

The current ozone (O3) levels at Diamond Bar, California is 39.765 ppm.

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

The current nitrogen dioxide (NO2) levels at Diamond Bar, California is 3.736 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 2.249 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)

2.25 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

8.00 μg/m³

155

255

425

605+

Ozone (O₃)

39.77 ppb

201

201+

Sulfur Dioxide (SO₂)

0.34 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.74 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Diamond Bar, California

Get Live Pollen Counts

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
2026-10-21T02:00:00.000Z	35 \| good	6.016 \| good	32.701 \| good	38.237 \| good	0.365 \| good	6.338 \| good	0.43 \| good
2026-10-21T03:00:00.000Z	33 \| good	5.512 \| good	23.989 \| good	26.705 \| good	0.985 \| good	11.102 \| good	0.155 \| good
2026-10-21T04:00:00.000Z	28 \| good	5.431 \| good	21.819 \| good	29.533 \| good	0.36 \| good	6.877 \| good	0.309 \| good
2026-10-21T05:00:00.000Z	28 \| good	4.652 \| good	25.489 \| good	29.644 \| good	0.7 \| good	7.54 \| good	0.321 \| good
2026-10-21T06:00:00.000Z	27 \| good	4.556 \| good	22.131 \| good	26.13 \| good	0.345 \| good	7.546 \| good	0.289 \| good
2026-10-21T07:00:00.000Z	25 \| good	4.472 \| good	23.739 \| good	26.534 \| good	0.346 \| good	7.546 \| good	0.288 \| good
2026-10-21T08:00:00.000Z	33 \| good	5.671 \| good	26.612 \| good	26.316 \| good	0.337 \| good	8.164 \| good	0.335 \| good
2026-10-21T09:00:00.000Z	27 \| good	5.323 \| good	23.93 \| good	21.253 \| good	0.44 \| good	7.636 \| good	0.273 \| good
2026-10-21T10:00:00.000Z	27 \| good	5.13 \| good	23.551 \| good	16.392 \| good	0.38 \| good	9.714 \| good	0.294 \| good
2026-10-21T11:00:00.000Z	27 \| good	4.811 \| good	23.409 \| good	14.996 \| good	0.392 \| good	11.228 \| good	0.323 \| good
2026-10-21T12:00:00.000Z	22 \| good	4.414 \| good	19.589 \| good	12.285 \| good	0.431 \| good	12.126 \| good	0.332 \| good
2026-10-21T13:00:00.000Z	27 \| good	5.236 \| good	21.801 \| good	12.342 \| good	0.43 \| good	12.126 \| good	0.332 \| good
2026-10-21T14:00:00.000Z	33 \| good	5.754 \| good	27.768 \| good	10.02 \| good	0.434 \| good	15.45 \| good	0.564 \| good
2026-10-21T15:00:00.000Z	38 \| good	7.107 \| good	31.506 \| good	13.006 \| good	0.535 \| good	16.58 \| good	0.637 \| good
2026-10-21T16:00:00.000Z	52 \| moderate	10.255 \| good	36.94 \| good	16.772 \| good	0.526 \| good	15.107 \| good	0.625 \| good
2026-10-21T17:00:00.000Z	52 \| moderate	9.588 \| good	35.386 \| good	17.446 \| good	0.526 \| good	17.476 \| good	0.501 \| good
2026-10-21T18:00:00.000Z	52 \| moderate	9.572 \| good	39.98 \| good	23.326 \| good	0.391 \| good	14.957 \| good	0.451 \| good
2026-10-21T19:00:00.000Z	44 \| good	8.281 \| good	34.691 \| good	30.346 \| good	0.539 \| good	7.719 \| good	0.374 \| good
2026-10-21T20:00:00.000Z	40 \| good	6.387 \| good	42.582 \| good	32.888 \| good	0.473 \| good	6.956 \| good	0.35 \| good
2026-10-21T21:00:00.000Z	43 \| good	7.465 \| good	45.576 \| good	34.945 \| good	0.533 \| good	7.693 \| good	0.363 \| good
2026-10-21T22:00:00.000Z	42 \| good	7.122 \| good	44.654 \| good	32.999 \| good	0.464 \| good	9.131 \| good	0.339 \| good
2026-10-21T23:00:00.000Z	33 \| good	5.763 \| good	28.052 \| good	30.003 \| good	0.403 \| good	9.92 \| good	0.371 \| good
2026-10-22T00:00:00.000Z	33 \| good	5.55 \| good	24.832 \| good	30.777 \| good	0.42 \| good	9.302 \| good	0.361 \| good
2026-10-22T01:00:00.000Z	38 \| good	6.704 \| good	25.173 \| good	27.734 \| good	0.389 \| good	11.598 \| good	0.456 \| good
2026-10-22T02:00:00.000Z	38 \| good	6.947 \| good	25.018 \| good	26.43 \| good	0.418 \| good	11.518 \| good	0.45 \| good
2026-10-22T03:00:00.000Z	34 \| good	5.775 \| good	24.987 \| good	36.902 \| good	0.52 \| good	14.5 \| good	0.14 \| good
2026-10-22T04:00:00.000Z	44 \| good	7.72 \| good	19.841 \| good	24.794 \| good	0.354 \| good	5.585 \| good	0.312 \| good
2026-10-22T05:00:00.000Z	23 \| good	4.343 \| good	15.611 \| good	25.313 \| good	0.632 \| good	4.512 \| good	0.295 \| good
2026-10-22T06:00:00.000Z	27 \| good	4.709 \| good	12.13 \| good	25.142 \| good	0.246 \| good	4.107 \| good	0.325 \| good
2026-10-22T07:00:00.000Z	23 \| good	4.333 \| good	14.332 \| good	25.452 \| good	0.246 \| good	4.107 \| good	0.325 \| good
2026-10-22T08:00:00.000Z	21 \| good	3.233 \| good	12.169 \| good	23.499 \| good	0.294 \| good	2.399 \| good	0.221 \| good
2026-10-22T09:00:00.000Z	20 \| good	1.76 \| good	8.865 \| good	22.368 \| good	0.379 \| good	2.564 \| good	0.195 \| good
2026-10-22T10:00:00.000Z	20 \| good	2.009 \| good	8.976 \| good	22.259 \| good	0.293 \| good	4.145 \| good	0.195 \| good
2026-10-22T11:00:00.000Z	16 \| good	2.136 \| good	10.483 \| good	17.498 \| good	0.353 \| good	5.617 \| good	0.256 \| good
2026-10-22T12:00:00.000Z	16 \| good	1.516 \| good	8.756 \| good	17.484 \| good	0.294 \| good	6.7 \| good	0.312 \| good
2026-10-22T13:00:00.000Z	17 \| good	1.649 \| good	10.576 \| good	17.593 \| good	0.294 \| good	6.7 \| good	0.312 \| good
2026-10-22T14:00:00.000Z	14 \| good	2.014 \| good	7.501 \| good	15.23 \| good	0.294 \| good	12.676 \| good	0.491 \| good
2026-10-22T15:00:00.000Z	16 \| good	3.026 \| good	9.112 \| good	15.791 \| good	0.252 \| good	14.411 \| good	0.587 \| good
2026-10-22T16:00:00.000Z	19 \| good	2.83 \| good	10.327 \| good	20.661 \| good	0.35 \| good	12.506 \| good	0.581 \| good
2026-10-22T17:00:00.000Z	23 \| good	2.844 \| good	15.074 \| good	24.958 \| good	0.309 \| good	6.509 \| good	0.386 \| good
2026-10-22T18:00:00.000Z	29 \| good	3.238 \| good	11.691 \| good	30.96 \| good	0.265 \| good	5.25 \| good	0.3 \| good
2026-10-22T19:00:00.000Z	32 \| good	2.777 \| good	8.695 \| good	35.347 \| good	0.243 \| good	4.229 \| good	0.283 \| good
2026-10-22T20:00:00.000Z	34 \| good	2.345 \| good	8.908 \| good	37.076 \| good	0.265 \| good	3.841 \| good	0.274 \| good
2026-10-22T21:00:00.000Z	35 \| good	2.168 \| good	10.702 \| good	37.982 \| good	0.254 \| good	3.253 \| good	0.281 \| good
2026-10-22T22:00:00.000Z	37 \| good	1.887 \| good	10.359 \| good	39.885 \| good	0.298 \| good	2.819 \| good	0.295 \| good
2026-10-22T23:00:00.000Z	38 \| good	2.219 \| good	8.458 \| good	41.268 \| good	0.298 \| good	3.233 \| good	0.347 \| good
2026-10-23T00:00:00.000Z	37 \| good	1.518 \| good	5.491 \| good	39.741 \| good	0.35 \| good	3.795 \| good	0.287 \| good
2026-10-23T01:00:00.000Z	37 \| good	2.249 \| good	7.996 \| good	39.765 \| good	0.338 \| good	3.736 \| good	0.254 \| good
2026-10-22T23:00:00.000Z	39 \| good	5.121 \| good	22.032 \| good	41.689 \| good	0.658 \| good	2.616 \| good	0.14 \| good
2026-10-23T00:00:00.000Z	40 \| good	2.601 \| good	10.845 \| good	42.612 \| good	0.785 \| good	3.644 \| good	0.143 \| good
2026-10-23T01:00:00.000Z	32 \| good	3.491 \| good	15.002 \| good	35.009 \| good	0.903 \| good	5.732 \| good	0.15 \| good
2026-10-23T02:00:00.000Z	27 \| good	4.772 \| good	20.868 \| good	28.051 \| good	1.007 \| good	12.077 \| good	0.173 \| good
2026-10-23T03:00:00.000Z	49 \| good	8.565 \| good	37.274 \| good	29.501 \| good	1.131 \| good	18.951 \| good	0.195 \| good
2026-10-23T04:00:00.000Z	24 \| good	3.478 \| good	15.421 \| good	25.817 \| good	1.231 \| good	24.308 \| good	0.214 \| good
2026-10-23T05:00:00.000Z	25 \| good	3.367 \| good	14.681 \| good	23.221 \| good	1.298 \| good	25.892 \| good	0.225 \| good
2026-10-23T06:00:00.000Z	27 \| good	4.544 \| good	19.755 \| good	18.645 \| good	1.267 \| good	24.95 \| good	0.225 \| good
2026-10-23T07:00:00.000Z	22 \| good	4.231 \| good	18.67 \| good	20.41 \| good	1.19 \| good	21.412 \| good	0.212 \| good
2026-10-23T08:00:00.000Z	22 \| good	3.626 \| good	15.551 \| good	19.195 \| good	1.176 \| good	15.334 \| good	0.191 \| good
2026-10-23T09:00:00.000Z	16 \| good	3.21 \| good	14.232 \| good	16.842 \| good	1.091 \| good	12.367 \| good	0.181 \| good
2026-10-23T10:00:00.000Z	19 \| good	2.075 \| good	8.562 \| good	19.653 \| good	1 \| good	9.561 \| good	0.171 \| good
2026-10-23T11:00:00.000Z	18 \| good	2.313 \| good	9.534 \| good	19.112 \| good	0.895 \| good	8.696 \| good	0.167 \| good
2026-10-23T12:00:00.000Z	16 \| good	2.247 \| good	9.331 \| good	16.829 \| good	0.834 \| good	8.525 \| good	0.166 \| good
2026-10-23T13:00:00.000Z	18 \| good	1.592 \| good	6.362 \| good	18.646 \| good	0.795 \| good	7.111 \| good	0.16 \| good
2026-10-23T14:00:00.000Z	19 \| good	1.804 \| good	7.444 \| good	20.127 \| good	0.794 \| good	8.905 \| good	0.165 \| good
2026-10-23T15:00:00.000Z	21 \| good	3.341 \| good	14.379 \| good	23.373 \| good	0.794 \| good	8.824 \| good	0.172 \| good
2026-10-23T16:00:00.000Z	24 \| good	2.243 \| good	9.547 \| good	26.094 \| good	0.703 \| good	4.571 \| good	0.148 \| good
2026-10-23T17:00:00.000Z	24 \| good	2.896 \| good	11.799 \| good	25.639 \| good	0.671 \| good	3.384 \| good	0.14 \| good
2026-10-23T18:00:00.000Z	27 \| good	2.976 \| good	11.919 \| good	29.181 \| good	0.698 \| good	3.225 \| good	0.136 \| good
2026-10-23T19:00:00.000Z	32 \| good	3.025 \| good	12.187 \| good	35.288 \| good	0.765 \| good	3.236 \| good	0.135 \| good
2026-10-23T20:00:00.000Z	37 \| good	5.296 \| good	22.691 \| good	40.357 \| good	0.78 \| good	2.823 \| good	0.133 \| good
2026-10-23T21:00:00.000Z	41 \| good	6.731 \| good	29.569 \| good	44.311 \| good	0.762 \| good	2.632 \| good	0.131 \| good
2026-10-23T22:00:00.000Z	43 \| good	7.03 \| good	31.402 \| good	46.438 \| good	0.761 \| good	2.551 \| good	0.13 \| good
2026-10-23T23:00:00.000Z	45 \| good	6.785 \| good	29.878 \| good	49.397 \| good	0.833 \| good	2.943 \| good	0.131 \| good
2026-10-24T00:00:00.000Z	49 \| good	7.951 \| good	34.74 \| good	52.532 \| good	0.948 \| good	3.861 \| good	0.134 \| good
2026-10-24T01:00:00.000Z	45 \| good	7.706 \| good	33.968 \| good	49.162 \| good	1.045 \| good	6.909 \| good	0.145 \| good
2026-10-24T02:00:00.000Z	52 \| moderate	9.924 \| good	43.94 \| good	38.033 \| good	1.138 \| good	14.153 \| good	0.17 \| good
2026-10-24T03:00:00.000Z	58 \| moderate	12.526 \| fine	56.118 \| fine	34.181 \| good	1.205 \| good	20.449 \| good	0.191 \| good
2026-10-24T04:00:00.000Z	54 \| moderate	11.476 \| good	50.728 \| good	26.123 \| good	1.281 \| good	24.888 \| good	0.207 \| good
2026-10-24T05:00:00.000Z	56 \| moderate	11.606 \| good	51.166 \| good	23.092 \| good	1.339 \| good	26.294 \| good	0.22 \| good
2026-10-24T06:00:00.000Z	56 \| moderate	11.827 \| good	53.051 \| good	20.841 \| good	1.354 \| good	27.292 \| good	0.229 \| good
2026-10-24T07:00:00.000Z	56 \| moderate	11.705 \| good	52.6 \| good	23.023 \| good	1.285 \| good	26.651 \| good	0.238 \| good
2026-10-24T08:00:00.000Z	56 \| moderate	11.793 \| good	52.496 \| good	22.169 \| good	1.122 \| good	24.945 \| good	0.238 \| good
2026-10-24T09:00:00.000Z	52 \| moderate	9.7 \| good	43.037 \| good	20.14 \| good	0.963 \| good	23.121 \| good	0.236 \| good
2026-10-24T10:00:00.000Z	44 \| good	7.637 \| good	33.902 \| good	20.02 \| good	0.81 \| good	21.275 \| good	0.234 \| good
2026-10-24T11:00:00.000Z	44 \| good	7.59 \| good	33.24 \| good	19.181 \| good	0.681 \| good	19.608 \| good	0.232 \| good
2026-10-24T12:00:00.000Z	44 \| good	7.85 \| good	34.287 \| good	19.577 \| good	0.582 \| good	18.199 \| good	0.228 \| good
2026-10-24T13:00:00.000Z	44 \| good	8.125 \| good	35.876 \| good	17.764 \| good	0.514 \| good	17.171 \| good	0.226 \| good
2026-10-24T14:00:00.000Z	44 \| good	7.845 \| good	34.112 \| good	20.271 \| good	0.507 \| good	16.827 \| good	0.23 \| good
2026-10-24T15:00:00.000Z	56 \| moderate	12.159 \| fine	54.826 \| good	20.184 \| good	0.523 \| good	14.388 \| good	0.242 \| good
2026-10-24T16:00:00.000Z	52 \| moderate	9.854 \| good	43.773 \| good	22.108 \| good	0.54 \| good	11.779 \| good	0.235 \| good
2026-10-24T17:00:00.000Z	49 \| good	8.721 \| good	39.112 \| good	29.055 \| good	0.708 \| good	8.155 \| good	0.172 \| good
2026-10-24T18:00:00.000Z	38 \| good	6.899 \| good	30.668 \| good	32.378 \| good	1.082 \| good	5.537 \| good	0.151 \| good
2026-10-24T19:00:00.000Z	44 \| good	7.51 \| good	33.052 \| good	38.404 \| good	1.184 \| good	4.579 \| good	0.144 \| good
2026-10-24T20:00:00.000Z	49 \| good	8.502 \| good	37.075 \| good	45.762 \| good	1.207 \| good	4.093 \| good	0.142 \| good
2026-10-24T21:00:00.000Z	49 \| good	9.439 \| good	41.792 \| good	51.123 \| good	1.234 \| good	3.868 \| good	0.14 \| good
2026-10-24T22:00:00.000Z	58 \| moderate	10.662 \| good	47.205 \| good	57.066 \| fine	1.313 \| good	3.952 \| good	0.141 \| good

Diamond Bar

Empower business decisions with accurate air quality data

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

0.25ppm

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 04:00:00 on 2026-10-22.

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 02:00:00 on 2026-10-22.

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

The real-time air quality index in Diamond Bar, California is 37, 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 2.249 μg/m³.

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

The current PM₁₀ levels in Diamond Bar, California are 7.996 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 0.254 ppm.

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

The current sulfur dioxide (SO₂) levels in Diamond Bar, California are 0.338 ppb.

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

The current ozone (O₃) levels at Diamond Bar, California is 39.765 ppm.

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

The current nitrogen dioxide (NO₂) levels at Diamond Bar, California is 3.736 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-21T02:00:00.000Z	35 \| good	6.016 \| good	32.701 \| good	38.237 \| good	0.365 \| good	6.338 \| good	0.43 \| good
2026-10-21T03:00:00.000Z	33 \| good	5.512 \| good	23.989 \| good	26.705 \| good	0.985 \| good	11.102 \| good	0.155 \| good
2026-10-21T04:00:00.000Z	28 \| good	5.431 \| good	21.819 \| good	29.533 \| good	0.36 \| good	6.877 \| good	0.309 \| good
2026-10-21T05:00:00.000Z	28 \| good	4.652 \| good	25.489 \| good	29.644 \| good	0.7 \| good	7.54 \| good	0.321 \| good
2026-10-21T06:00:00.000Z	27 \| good	4.556 \| good	22.131 \| good	26.13 \| good	0.345 \| good	7.546 \| good	0.289 \| good
2026-10-21T07:00:00.000Z	25 \| good	4.472 \| good	23.739 \| good	26.534 \| good	0.346 \| good	7.546 \| good	0.288 \| good
2026-10-21T08:00:00.000Z	33 \| good	5.671 \| good	26.612 \| good	26.316 \| good	0.337 \| good	8.164 \| good	0.335 \| good
2026-10-21T09:00:00.000Z	27 \| good	5.323 \| good	23.93 \| good	21.253 \| good	0.44 \| good	7.636 \| good	0.273 \| good
2026-10-21T10:00:00.000Z	27 \| good	5.13 \| good	23.551 \| good	16.392 \| good	0.38 \| good	9.714 \| good	0.294 \| good
2026-10-21T11:00:00.000Z	27 \| good	4.811 \| good	23.409 \| good	14.996 \| good	0.392 \| good	11.228 \| good	0.323 \| good
2026-10-21T12:00:00.000Z	22 \| good	4.414 \| good	19.589 \| good	12.285 \| good	0.431 \| good	12.126 \| good	0.332 \| good
2026-10-21T13:00:00.000Z	27 \| good	5.236 \| good	21.801 \| good	12.342 \| good	0.43 \| good	12.126 \| good	0.332 \| good
2026-10-21T14:00:00.000Z	33 \| good	5.754 \| good	27.768 \| good	10.02 \| good	0.434 \| good	15.45 \| good	0.564 \| good
2026-10-21T15:00:00.000Z	38 \| good	7.107 \| good	31.506 \| good	13.006 \| good	0.535 \| good	16.58 \| good	0.637 \| good
2026-10-21T16:00:00.000Z	52 \| moderate	10.255 \| good	36.94 \| good	16.772 \| good	0.526 \| good	15.107 \| good	0.625 \| good
2026-10-21T17:00:00.000Z	52 \| moderate	9.588 \| good	35.386 \| good	17.446 \| good	0.526 \| good	17.476 \| good	0.501 \| good
2026-10-21T18:00:00.000Z	52 \| moderate	9.572 \| good	39.98 \| good	23.326 \| good	0.391 \| good	14.957 \| good	0.451 \| good
2026-10-21T19:00:00.000Z	44 \| good	8.281 \| good	34.691 \| good	30.346 \| good	0.539 \| good	7.719 \| good	0.374 \| good
2026-10-21T20:00:00.000Z	40 \| good	6.387 \| good	42.582 \| good	32.888 \| good	0.473 \| good	6.956 \| good	0.35 \| good
2026-10-21T21:00:00.000Z	43 \| good	7.465 \| good	45.576 \| good	34.945 \| good	0.533 \| good	7.693 \| good	0.363 \| good
2026-10-21T22:00:00.000Z	42 \| good	7.122 \| good	44.654 \| good	32.999 \| good	0.464 \| good	9.131 \| good	0.339 \| good
2026-10-21T23:00:00.000Z	33 \| good	5.763 \| good	28.052 \| good	30.003 \| good	0.403 \| good	9.92 \| good	0.371 \| good
2026-10-22T00:00:00.000Z	33 \| good	5.55 \| good	24.832 \| good	30.777 \| good	0.42 \| good	9.302 \| good	0.361 \| good
2026-10-22T01:00:00.000Z	38 \| good	6.704 \| good	25.173 \| good	27.734 \| good	0.389 \| good	11.598 \| good	0.456 \| good
2026-10-22T02:00:00.000Z	38 \| good	6.947 \| good	25.018 \| good	26.43 \| good	0.418 \| good	11.518 \| good	0.45 \| good
2026-10-22T03:00:00.000Z	34 \| good	5.775 \| good	24.987 \| good	36.902 \| good	0.52 \| good	14.5 \| good	0.14 \| good
2026-10-22T04:00:00.000Z	44 \| good	7.72 \| good	19.841 \| good	24.794 \| good	0.354 \| good	5.585 \| good	0.312 \| good
2026-10-22T05:00:00.000Z	23 \| good	4.343 \| good	15.611 \| good	25.313 \| good	0.632 \| good	4.512 \| good	0.295 \| good
2026-10-22T06:00:00.000Z	27 \| good	4.709 \| good	12.13 \| good	25.142 \| good	0.246 \| good	4.107 \| good	0.325 \| good
2026-10-22T07:00:00.000Z	23 \| good	4.333 \| good	14.332 \| good	25.452 \| good	0.246 \| good	4.107 \| good	0.325 \| good
2026-10-22T08:00:00.000Z	21 \| good	3.233 \| good	12.169 \| good	23.499 \| good	0.294 \| good	2.399 \| good	0.221 \| good
2026-10-22T09:00:00.000Z	20 \| good	1.76 \| good	8.865 \| good	22.368 \| good	0.379 \| good	2.564 \| good	0.195 \| good
2026-10-22T10:00:00.000Z	20 \| good	2.009 \| good	8.976 \| good	22.259 \| good	0.293 \| good	4.145 \| good	0.195 \| good
2026-10-22T11:00:00.000Z	16 \| good	2.136 \| good	10.483 \| good	17.498 \| good	0.353 \| good	5.617 \| good	0.256 \| good
2026-10-22T12:00:00.000Z	16 \| good	1.516 \| good	8.756 \| good	17.484 \| good	0.294 \| good	6.7 \| good	0.312 \| good
2026-10-22T13:00:00.000Z	17 \| good	1.649 \| good	10.576 \| good	17.593 \| good	0.294 \| good	6.7 \| good	0.312 \| good
2026-10-22T14:00:00.000Z	14 \| good	2.014 \| good	7.501 \| good	15.23 \| good	0.294 \| good	12.676 \| good	0.491 \| good
2026-10-22T15:00:00.000Z	16 \| good	3.026 \| good	9.112 \| good	15.791 \| good	0.252 \| good	14.411 \| good	0.587 \| good
2026-10-22T16:00:00.000Z	19 \| good	2.83 \| good	10.327 \| good	20.661 \| good	0.35 \| good	12.506 \| good	0.581 \| good
2026-10-22T17:00:00.000Z	23 \| good	2.844 \| good	15.074 \| good	24.958 \| good	0.309 \| good	6.509 \| good	0.386 \| good
2026-10-22T18:00:00.000Z	29 \| good	3.238 \| good	11.691 \| good	30.96 \| good	0.265 \| good	5.25 \| good	0.3 \| good
2026-10-22T19:00:00.000Z	32 \| good	2.777 \| good	8.695 \| good	35.347 \| good	0.243 \| good	4.229 \| good	0.283 \| good
2026-10-22T20:00:00.000Z	34 \| good	2.345 \| good	8.908 \| good	37.076 \| good	0.265 \| good	3.841 \| good	0.274 \| good
2026-10-22T21:00:00.000Z	35 \| good	2.168 \| good	10.702 \| good	37.982 \| good	0.254 \| good	3.253 \| good	0.281 \| good
2026-10-22T22:00:00.000Z	37 \| good	1.887 \| good	10.359 \| good	39.885 \| good	0.298 \| good	2.819 \| good	0.295 \| good
2026-10-22T23:00:00.000Z	38 \| good	2.219 \| good	8.458 \| good	41.268 \| good	0.298 \| good	3.233 \| good	0.347 \| good
2026-10-23T00:00:00.000Z	37 \| good	1.518 \| good	5.491 \| good	39.741 \| good	0.35 \| good	3.795 \| good	0.287 \| good
2026-10-23T01:00:00.000Z	37 \| good	2.249 \| good	7.996 \| good	39.765 \| good	0.338 \| good	3.736 \| good	0.254 \| good
2026-10-22T23:00:00.000Z	39 \| good	5.121 \| good	22.032 \| good	41.689 \| good	0.658 \| good	2.616 \| good	0.14 \| good
2026-10-23T00:00:00.000Z	40 \| good	2.601 \| good	10.845 \| good	42.612 \| good	0.785 \| good	3.644 \| good	0.143 \| good
2026-10-23T01:00:00.000Z	32 \| good	3.491 \| good	15.002 \| good	35.009 \| good	0.903 \| good	5.732 \| good	0.15 \| good
2026-10-23T02:00:00.000Z	27 \| good	4.772 \| good	20.868 \| good	28.051 \| good	1.007 \| good	12.077 \| good	0.173 \| good
2026-10-23T03:00:00.000Z	49 \| good	8.565 \| good	37.274 \| good	29.501 \| good	1.131 \| good	18.951 \| good	0.195 \| good
2026-10-23T04:00:00.000Z	24 \| good	3.478 \| good	15.421 \| good	25.817 \| good	1.231 \| good	24.308 \| good	0.214 \| good
2026-10-23T05:00:00.000Z	25 \| good	3.367 \| good	14.681 \| good	23.221 \| good	1.298 \| good	25.892 \| good	0.225 \| good
2026-10-23T06:00:00.000Z	27 \| good	4.544 \| good	19.755 \| good	18.645 \| good	1.267 \| good	24.95 \| good	0.225 \| good
2026-10-23T07:00:00.000Z	22 \| good	4.231 \| good	18.67 \| good	20.41 \| good	1.19 \| good	21.412 \| good	0.212 \| good
2026-10-23T08:00:00.000Z	22 \| good	3.626 \| good	15.551 \| good	19.195 \| good	1.176 \| good	15.334 \| good	0.191 \| good
2026-10-23T09:00:00.000Z	16 \| good	3.21 \| good	14.232 \| good	16.842 \| good	1.091 \| good	12.367 \| good	0.181 \| good
2026-10-23T10:00:00.000Z	19 \| good	2.075 \| good	8.562 \| good	19.653 \| good	1 \| good	9.561 \| good	0.171 \| good
2026-10-23T11:00:00.000Z	18 \| good	2.313 \| good	9.534 \| good	19.112 \| good	0.895 \| good	8.696 \| good	0.167 \| good
2026-10-23T12:00:00.000Z	16 \| good	2.247 \| good	9.331 \| good	16.829 \| good	0.834 \| good	8.525 \| good	0.166 \| good
2026-10-23T13:00:00.000Z	18 \| good	1.592 \| good	6.362 \| good	18.646 \| good	0.795 \| good	7.111 \| good	0.16 \| good
2026-10-23T14:00:00.000Z	19 \| good	1.804 \| good	7.444 \| good	20.127 \| good	0.794 \| good	8.905 \| good	0.165 \| good
2026-10-23T15:00:00.000Z	21 \| good	3.341 \| good	14.379 \| good	23.373 \| good	0.794 \| good	8.824 \| good	0.172 \| good
2026-10-23T16:00:00.000Z	24 \| good	2.243 \| good	9.547 \| good	26.094 \| good	0.703 \| good	4.571 \| good	0.148 \| good
2026-10-23T17:00:00.000Z	24 \| good	2.896 \| good	11.799 \| good	25.639 \| good	0.671 \| good	3.384 \| good	0.14 \| good
2026-10-23T18:00:00.000Z	27 \| good	2.976 \| good	11.919 \| good	29.181 \| good	0.698 \| good	3.225 \| good	0.136 \| good
2026-10-23T19:00:00.000Z	32 \| good	3.025 \| good	12.187 \| good	35.288 \| good	0.765 \| good	3.236 \| good	0.135 \| good
2026-10-23T20:00:00.000Z	37 \| good	5.296 \| good	22.691 \| good	40.357 \| good	0.78 \| good	2.823 \| good	0.133 \| good
2026-10-23T21:00:00.000Z	41 \| good	6.731 \| good	29.569 \| good	44.311 \| good	0.762 \| good	2.632 \| good	0.131 \| good
2026-10-23T22:00:00.000Z	43 \| good	7.03 \| good	31.402 \| good	46.438 \| good	0.761 \| good	2.551 \| good	0.13 \| good
2026-10-23T23:00:00.000Z	45 \| good	6.785 \| good	29.878 \| good	49.397 \| good	0.833 \| good	2.943 \| good	0.131 \| good
2026-10-24T00:00:00.000Z	49 \| good	7.951 \| good	34.74 \| good	52.532 \| good	0.948 \| good	3.861 \| good	0.134 \| good
2026-10-24T01:00:00.000Z	45 \| good	7.706 \| good	33.968 \| good	49.162 \| good	1.045 \| good	6.909 \| good	0.145 \| good
2026-10-24T02:00:00.000Z	52 \| moderate	9.924 \| good	43.94 \| good	38.033 \| good	1.138 \| good	14.153 \| good	0.17 \| good
2026-10-24T03:00:00.000Z	58 \| moderate	12.526 \| fine	56.118 \| fine	34.181 \| good	1.205 \| good	20.449 \| good	0.191 \| good
2026-10-24T04:00:00.000Z	54 \| moderate	11.476 \| good	50.728 \| good	26.123 \| good	1.281 \| good	24.888 \| good	0.207 \| good
2026-10-24T05:00:00.000Z	56 \| moderate	11.606 \| good	51.166 \| good	23.092 \| good	1.339 \| good	26.294 \| good	0.22 \| good
2026-10-24T06:00:00.000Z	56 \| moderate	11.827 \| good	53.051 \| good	20.841 \| good	1.354 \| good	27.292 \| good	0.229 \| good
2026-10-24T07:00:00.000Z	56 \| moderate	11.705 \| good	52.6 \| good	23.023 \| good	1.285 \| good	26.651 \| good	0.238 \| good
2026-10-24T08:00:00.000Z	56 \| moderate	11.793 \| good	52.496 \| good	22.169 \| good	1.122 \| good	24.945 \| good	0.238 \| good
2026-10-24T09:00:00.000Z	52 \| moderate	9.7 \| good	43.037 \| good	20.14 \| good	0.963 \| good	23.121 \| good	0.236 \| good
2026-10-24T10:00:00.000Z	44 \| good	7.637 \| good	33.902 \| good	20.02 \| good	0.81 \| good	21.275 \| good	0.234 \| good
2026-10-24T11:00:00.000Z	44 \| good	7.59 \| good	33.24 \| good	19.181 \| good	0.681 \| good	19.608 \| good	0.232 \| good
2026-10-24T12:00:00.000Z	44 \| good	7.85 \| good	34.287 \| good	19.577 \| good	0.582 \| good	18.199 \| good	0.228 \| good
2026-10-24T13:00:00.000Z	44 \| good	8.125 \| good	35.876 \| good	17.764 \| good	0.514 \| good	17.171 \| good	0.226 \| good
2026-10-24T14:00:00.000Z	44 \| good	7.845 \| good	34.112 \| good	20.271 \| good	0.507 \| good	16.827 \| good	0.23 \| good
2026-10-24T15:00:00.000Z	56 \| moderate	12.159 \| fine	54.826 \| good	20.184 \| good	0.523 \| good	14.388 \| good	0.242 \| good
2026-10-24T16:00:00.000Z	52 \| moderate	9.854 \| good	43.773 \| good	22.108 \| good	0.54 \| good	11.779 \| good	0.235 \| good
2026-10-24T17:00:00.000Z	49 \| good	8.721 \| good	39.112 \| good	29.055 \| good	0.708 \| good	8.155 \| good	0.172 \| good
2026-10-24T18:00:00.000Z	38 \| good	6.899 \| good	30.668 \| good	32.378 \| good	1.082 \| good	5.537 \| good	0.151 \| good
2026-10-24T19:00:00.000Z	44 \| good	7.51 \| good	33.052 \| good	38.404 \| good	1.184 \| good	4.579 \| good	0.144 \| good
2026-10-24T20:00:00.000Z	49 \| good	8.502 \| good	37.075 \| good	45.762 \| good	1.207 \| good	4.093 \| good	0.142 \| good
2026-10-24T21:00:00.000Z	49 \| good	9.439 \| good	41.792 \| good	51.123 \| good	1.234 \| good	3.868 \| good	0.14 \| good
2026-10-24T22:00:00.000Z	58 \| moderate	10.662 \| good	47.205 \| good	57.066 \| fine	1.313 \| good	3.952 \| good	0.141 \| good

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

Common air pollutants in Diamond Bar, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Diamond Bar, California air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Walnut, California

Chino Hills, California

Pomona, California

South San Jose Hills, California

Rowland Heights, California

Chino, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

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

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

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

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

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

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

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

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

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