What is the current concentration of PM10 in Westminster, California?

The current PM10 concentration at Westminster, California is 18.415 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Westminster, California?

The current sulfur dioxide (SO2) concentration at Westminster, California is 0.162 ppb.

What is the current concentration of ozone (O3) in Westminster, California?

The current ozone (O3) concentration at Westminster, California is 29.043 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Westminster, California?

The current nitrogen dioxide (NO2) concentration at Westminster, California is 5.944 ppb.

Live air quality index in Westminster, California today

Name: Live air pollution levels in Westminster, California today
Creator: Ambee

Stay updated with real-time air quality in Westminster, 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

Westminster, California

Last updated: ... (Local time)

Major air pollutants in Westminster, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

8.62 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.41 μg/m³

155

255

425

605+

Ozone (O₃)

29.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.16 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.94 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Westminster, California

Get Live Pollen Counts

Westminster, California

Scroll To Air Quality Map

Track live Westminster, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T13:00:00.000Z	27 \| good	4.953 \| good	15.593 \| good	28.855 \| good	0.197 \| good	6.36 \| good	0.189 \| good
2025-06-05T14:00:00.000Z	27 \| good	5.286 \| good	19.121 \| good	27.536 \| good	0.154 \| good	9.052 \| good	0.172 \| good
2025-06-05T15:00:00.000Z	27 \| good	5.007 \| good	25.448 \| good	28.353 \| good	0.165 \| good	9.933 \| good	0.197 \| good
2025-06-05T16:00:00.000Z	28 \| good	5.403 \| good	30.452 \| good	28.795 \| good	0.197 \| good	9.234 \| good	0.197 \| good
2025-06-05T17:00:00.000Z	27 \| good	5.474 \| good	28.357 \| good	28.974 \| good	0.218 \| good	12.424 \| good	0.214 \| good
2025-06-05T18:00:00.000Z	27 \| good	5.466 \| good	23.426 \| good	29.345 \| good	0.235 \| good	13.622 \| good	0.277 \| good
2025-06-05T19:00:00.000Z	44 \| good	8.062 \| good	23.9 \| good	31.28 \| good	0.306 \| good	10.365 \| good	0.152 \| good
2025-06-05T20:00:00.000Z	38 \| good	6.712 \| good	24.626 \| good	33.915 \| good	0.301 \| good	10.429 \| good	0.191 \| good
2025-06-05T21:00:00.000Z	34 \| good	6.44 \| good	25.856 \| good	37.402 \| good	0.401 \| good	9.538 \| good	0.22 \| good
2025-06-05T22:00:00.000Z	38 \| good	6.733 \| good	23.448 \| good	37.698 \| good	0.215 \| good	7.674 \| good	0.151 \| good
2025-06-05T23:00:00.000Z	35 \| good	5.28 \| good	22.63 \| good	37.98 \| good	0.326 \| good	6.402 \| good	0.151 \| good
2025-06-06T00:00:00.000Z	35 \| good	4.473 \| good	19.182 \| good	38.403 \| good	0.53 \| good	6.227 \| good	0.151 \| good
2025-06-06T01:00:00.000Z	33 \| good	4.131 \| good	17.609 \| good	36.314 \| good	0.596 \| good	5.562 \| good	0.161 \| good
2025-06-06T02:00:00.000Z	31 \| good	5.111 \| good	13.982 \| good	33.392 \| good	0.558 \| good	6.398 \| good	0.19 \| good
2025-06-06T03:00:00.000Z	31 \| good	5.165 \| good	13.917 \| good	33.081 \| good	0.464 \| good	7.327 \| good	0.198 \| good
2025-06-06T04:00:00.000Z	30 \| good	4.316 \| good	15.777 \| good	31.81 \| good	0.374 \| good	7.616 \| good	0.172 \| good
2025-06-06T05:00:00.000Z	31 \| good	4.696 \| good	15.239 \| good	33.396 \| good	0.481 \| good	8.257 \| good	0.168 \| good
2025-06-06T06:00:00.000Z	28 \| good	4.047 \| good	14.006 \| good	30.42 \| good	0.243 \| good	7.957 \| good	0.193 \| good
2025-06-06T07:00:00.000Z	27 \| good	4.417 \| good	18.587 \| good	29.443 \| good	0.177 \| good	7.827 \| good	0.222 \| good
2025-06-06T08:00:00.000Z	28 \| good	3.995 \| good	14.887 \| good	29.834 \| good	0.205 \| good	6.781 \| good	0.184 \| good
2025-06-06T09:00:00.000Z	28 \| good	4.215 \| good	15.55 \| good	30.044 \| good	0.222 \| good	5.627 \| good	0.147 \| good
2025-06-06T10:00:00.000Z	28 \| good	4.907 \| good	15.815 \| good	30.2 \| good	0.268 \| good	5.835 \| good	0.137 \| good
2025-06-06T11:00:00.000Z	29 \| good	5.135 \| good	17.346 \| good	31.106 \| good	0.214 \| good	5.719 \| good	0.111 \| good
2025-06-06T12:00:00.000Z	28 \| good	5.103 \| good	17.087 \| good	29.835 \| good	0.196 \| good	6.536 \| good	0.163 \| good
2025-06-06T13:00:00.000Z	33 \| good	5.876 \| good	19.496 \| good	29.367 \| good	0.205 \| good	10.043 \| good	0.224 \| good
2025-06-06T14:00:00.000Z	33 \| good	6.275 \| good	21.125 \| good	27.842 \| good	0.151 \| good	12.021 \| good	0.193 \| good
2025-06-06T15:00:00.000Z	38 \| good	7.421 \| good	24.429 \| good	27.263 \| good	0.202 \| good	12.479 \| good	0.27 \| good
2025-06-06T16:00:00.000Z	49 \| good	8.553 \| good	29.672 \| good	28.238 \| good	0.308 \| good	13.239 \| good	0.228 \| good
2025-06-06T17:00:00.000Z	49 \| good	8.607 \| good	27.643 \| good	29.403 \| good	0.312 \| good	13.39 \| good	0.207 \| good
2025-06-06T18:00:00.000Z	49 \| good	9.139 \| good	27.615 \| good	29.676 \| good	0.376 \| good	13.464 \| good	0.211 \| good
2025-06-06T19:00:00.000Z	52 \| moderate	9.924 \| good	29.145 \| good	30.827 \| good	0.344 \| good	12.985 \| good	0.232 \| good
2025-06-06T20:00:00.000Z	52 \| moderate	9.57 \| good	31.767 \| good	34.673 \| good	0.316 \| good	11.639 \| good	0.207 \| good
2025-06-06T21:00:00.000Z	52 \| moderate	9.695 \| good	34.815 \| good	37.362 \| good	0.328 \| good	9.376 \| good	0.202 \| good
2025-06-06T22:00:00.000Z	54 \| moderate	10.679 \| good	29.102 \| good	39.437 \| good	0.251 \| good	8.253 \| good	0.172 \| good
2025-06-06T23:00:00.000Z	52 \| moderate	9.568 \| good	28.255 \| good	40.553 \| good	0.412 \| good	6.715 \| good	0.172 \| good
2025-06-07T00:00:00.000Z	49 \| good	8.739 \| good	24.591 \| good	38.51 \| good	0.427 \| good	6.259 \| good	0.151 \| good
2025-06-07T01:00:00.000Z	38 \| good	7.363 \| good	17.017 \| good	36.635 \| good	0.484 \| good	6.158 \| good	0.151 \| good
2025-06-07T02:00:00.000Z	38 \| good	6.97 \| good	17.387 \| good	35.857 \| good	0.464 \| good	6.678 \| good	0.172 \| good
2025-06-07T03:00:00.000Z	38 \| good	7.06 \| good	14.169 \| good	33.943 \| good	0.429 \| good	7.554 \| good	0.172 \| good
2025-06-07T04:00:00.000Z	33 \| good	6.074 \| good	16.734 \| good	33.592 \| good	0.489 \| good	7.932 \| good	0.172 \| good
2025-06-07T05:00:00.000Z	33 \| good	5.701 \| good	15.887 \| good	33.044 \| good	0.46 \| good	7.772 \| good	0.172 \| good
2025-06-07T06:00:00.000Z	30 \| good	5.279 \| good	15.777 \| good	31.89 \| good	0.301 \| good	8.656 \| good	0.205 \| good
2025-06-07T07:00:00.000Z	33 \| good	5.962 \| good	17.951 \| good	30.169 \| good	0.408 \| good	7.827 \| good	0.278 \| good
2025-06-07T08:00:00.000Z	33 \| good	6.036 \| good	17.767 \| good	29.149 \| good	0.374 \| good	7.535 \| good	0.205 \| good
2025-06-07T09:00:00.000Z	38 \| good	6.652 \| good	19.786 \| good	29.915 \| good	0.221 \| good	6.604 \| good	0.183 \| good
2025-06-07T10:00:00.000Z	38 \| good	7.019 \| good	21.458 \| good	29.816 \| good	0.169 \| good	5.659 \| good	0.139 \| good
2025-06-07T11:00:00.000Z	44 \| good	7.516 \| good	20.07 \| good	30.058 \| good	0.158 \| good	5.946 \| good	0.16 \| good
2025-06-07T12:00:00.000Z	44 \| good	7.829 \| good	19.85 \| good	29.488 \| good	0.155 \| good	5.154 \| good	0.153 \| good
2025-06-07T12:00:00.000Z	49 \| good	8.622 \| good	18.415 \| good	29.043 \| good	0.162 \| good	5.944 \| good	0.177 \| good
2025-06-07T13:00:00.000Z	33 \| good	5.653 \| good	24.945 \| good	22.413 \| good	3.583 \| good	7.713 \| good	0.139 \| good
2025-06-07T14:00:00.000Z	38 \| good	7.362 \| good	32.268 \| good	22.001 \| good	4.057 \| good	9.156 \| good	0.146 \| good
2025-06-07T15:00:00.000Z	44 \| good	7.943 \| good	34.717 \| good	22.41 \| good	4.531 \| good	10.599 \| good	0.153 \| good
2025-06-07T16:00:00.000Z	49 \| good	8.715 \| good	38.529 \| good	25.281 \| good	3.491 \| good	5.732 \| good	0.137 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	9.928 \| good	43.816 \| good	29.726 \| good	3.994 \| good	6.949 \| good	0.145 \| good
2025-06-07T18:00:00.000Z	52 \| moderate	9.721 \| good	43.078 \| good	36.151 \| good	4.496 \| good	8.166 \| good	0.153 \| good
2025-06-07T19:00:00.000Z	49 \| good	9.058 \| good	40.043 \| good	43.916 \| good	2.555 \| good	3.161 \| good	0.124 \| good
2025-06-07T20:00:00.000Z	49 \| good	9.178 \| good	40.372 \| good	48.153 \| good	3.081 \| good	3.985 \| good	0.132 \| good
2025-06-07T21:00:00.000Z	49 \| good	8.865 \| good	39.356 \| good	45.619 \| good	3.606 \| good	4.81 \| good	0.14 \| good
2025-06-07T22:00:00.000Z	40 \| good	7.103 \| good	31.165 \| good	42.625 \| good	1.916 \| good	2.999 \| good	0.119 \| good
2025-06-07T23:00:00.000Z	37 \| good	5.499 \| good	23.753 \| good	39.6 \| good	2.383 \| good	3.594 \| good	0.126 \| good
2025-06-08T00:00:00.000Z	44 \| good	8.133 \| good	35.563 \| good	36.427 \| good	2.85 \| good	4.189 \| good	0.133 \| good
2025-06-08T01:00:00.000Z	38 \| good	6.983 \| good	30.962 \| good	34.235 \| good	1.854 \| good	7.661 \| good	0.127 \| good
2025-06-08T02:00:00.000Z	33 \| good	6.014 \| good	26.788 \| good	27.002 \| good	2.305 \| good	8.746 \| good	0.133 \| good
2025-06-08T03:00:00.000Z	38 \| good	6.539 \| good	28.855 \| good	27.498 \| good	2.755 \| good	9.832 \| good	0.14 \| good
2025-06-08T04:00:00.000Z	38 \| good	6.502 \| good	28.952 \| good	26.711 \| good	2.244 \| good	11.812 \| good	0.134 \| good
2025-06-08T05:00:00.000Z	33 \| good	6.273 \| good	27.627 \| good	25.67 \| good	2.654 \| good	13.6 \| good	0.142 \| good
2025-06-08T06:00:00.000Z	33 \| good	6.222 \| good	27.553 \| good	26.45 \| good	3.063 \| good	15.389 \| good	0.15 \| good
2025-06-08T07:00:00.000Z	38 \| good	7.262 \| good	32.369 \| good	25.674 \| good	2.512 \| good	13.277 \| good	0.139 \| good
2025-06-08T08:00:00.000Z	44 \| good	7.785 \| good	34.176 \| good	24.694 \| good	2.904 \| good	15.229 \| good	0.147 \| good
2025-06-08T09:00:00.000Z	38 \| good	6.858 \| good	30.31 \| good	25.287 \| good	3.297 \| good	17.182 \| good	0.154 \| good
2025-06-08T10:00:00.000Z	33 \| good	6.413 \| good	28.388 \| good	25.378 \| good	2.976 \| good	12.917 \| good	0.134 \| good
2025-06-08T11:00:00.000Z	27 \| good	5.397 \| good	23.626 \| good	25.795 \| good	3.266 \| good	14.778 \| good	0.141 \| good
2025-06-08T12:00:00.000Z	27 \| good	4.91 \| good	21.575 \| good	26.597 \| good	3.556 \| good	16.639 \| good	0.149 \| good
2025-06-08T13:00:00.000Z	38 \| good	6.697 \| good	29.713 \| good	22.156 \| good	4.154 \| good	9.968 \| good	0.144 \| good
2025-06-08T14:00:00.000Z	38 \| good	7.143 \| good	31.407 \| good	22.696 \| good	4.277 \| good	10.612 \| good	0.151 \| good
2025-06-08T15:00:00.000Z	44 \| good	8.024 \| good	35.253 \| good	24.61 \| good	4.401 \| good	11.256 \| good	0.158 \| good
2025-06-08T16:00:00.000Z	49 \| good	9.475 \| good	41.779 \| good	27.049 \| good	4.415 \| good	7.493 \| good	0.14 \| good
2025-06-08T17:00:00.000Z	56 \| moderate	11.992 \| good	53.635 \| good	31.291 \| good	4.629 \| good	8.468 \| good	0.147 \| good
2025-06-08T18:00:00.000Z	54 \| moderate	10.721 \| good	47.664 \| good	34.296 \| good	4.842 \| good	9.443 \| good	0.155 \| good
2025-06-08T19:00:00.000Z	52 \| moderate	9.756 \| good	43.169 \| good	38.458 \| good	3.517 \| good	4.501 \| good	0.125 \| good
2025-06-08T20:00:00.000Z	49 \| good	9.193 \| good	40.795 \| good	44.215 \| good	3.962 \| good	5.392 \| good	0.132 \| good
2025-06-08T21:00:00.000Z	49 \| good	9.145 \| good	40.461 \| good	47.099 \| good	4.408 \| good	6.283 \| good	0.14 \| good
2025-06-08T22:00:00.000Z	52 \| moderate	9.571 \| good	42.697 \| good	46.686 \| good	2.594 \| good	3.764 \| good	0.12 \| good
2025-06-08T23:00:00.000Z	44 \| good	7.992 \| good	35.274 \| good	45.416 \| good	3.145 \| good	4.491 \| good	0.127 \| good
2025-06-09T00:00:00.000Z	52 \| moderate	9.842 \| good	43.86 \| good	42.174 \| good	3.696 \| good	5.217 \| good	0.133 \| good
2025-06-09T01:00:00.000Z	49 \| good	8.543 \| good	37.378 \| good	37.581 \| good	2.229 \| good	8.236 \| good	0.129 \| good
2025-06-09T02:00:00.000Z	49 \| good	9.144 \| good	40.832 \| good	32.236 \| good	2.781 \| good	9.541 \| good	0.136 \| good
2025-06-09T03:00:00.000Z	44 \| good	8.228 \| good	36.272 \| good	27.085 \| good	3.333 \| good	10.845 \| good	0.143 \| good
2025-06-09T04:00:00.000Z	49 \| good	9.37 \| good	41.279 \| good	23.934 \| good	2.634 \| good	13.177 \| good	0.142 \| good
2025-06-09T05:00:00.000Z	44 \| good	8.293 \| good	36.479 \| good	20.306 \| good	3.131 \| good	15.215 \| good	0.151 \| good
2025-06-09T06:00:00.000Z	62 \| moderate	14.978 \| fine	17.217 \| good	21.35 \| good	3.658 \| good	17.339 \| good	0.16 \| good
2025-06-09T07:00:00.000Z	49 \| good	9.024 \| good	39.614 \| good	17.82 \| good	2.64 \| good	15.605 \| good	0.152 \| good
2025-06-09T08:00:00.000Z	52 \| moderate	9.893 \| good	43.853 \| good	17.91 \| good	3.118 \| good	17.481 \| good	0.16 \| good
2025-06-09T09:00:00.000Z	44 \| good	8.466 \| good	37.274 \| good	18.304 \| good	3.596 \| good	19.357 \| good	0.168 \| good
2025-06-09T10:00:00.000Z	44 \| good	8.283 \| good	36.39 \| good	20.923 \| good	2.902 \| good	15.538 \| good	0.145 \| good
2025-06-09T11:00:00.000Z	44 \| good	7.658 \| good	33.344 \| good	21.891 \| good	3.179 \| good	16.684 \| good	0.151 \| good
2025-06-09T12:00:00.000Z	66 \| moderate	16.828 \| fine	19.323 \| good	14.973 \| good	3.489 \| good	17.989 \| good	0.158 \| good

Westminster

Get reliable air quality data to drive your business

Westminster, California air quality map: Track AQI near you

0.17ppm

How accurate is California, USA air quality data?

Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Westminster, California updated?

The air quality for Westminster, California is updated every hour.

When was the worst air quality at Westminster, California in the last 24 hrs?

The worst air quality in Westminster, California in the last 24 hours was observed at 10:00:00 on 2025-06-06.

When was the best air quality at Westminster, California in the last 24 hrs?

In the last 24 hrs, the best air quality in Westminster, California was observed at 12:00:00 on 2025-06-06.

What is the current air quality in Westminster, California?

The current air quality in Westminster, California is 49, categorized as Good based on real-time data.

What pollutant is the most common in Westminster, California?

The most common pollutant in Westminster, California is PM2.5.

What should I do if the air quality in Westminster, California is poor?

If the air quality in Westminster, California is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Westminster, California?

The current PM_2.5 concentration at Westminster, California is 8.622 μg/m³.

What is the current concentration of PM₁₀ in Westminster, California?

The current PM₁₀ concentration at Westminster, California is 18.415 μg/m³.

What is the current concentration of carbon monoxide (CO) in Westminster, California?

The current carbon monoxide (CO) concentration at Westminster, California is 0.177 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Westminster, California?

The current sulfur dioxide (SO₂) concentration at Westminster, California is 0.162 ppb.

What is the current concentration of ozone (O₃) in Westminster, California?

The current ozone (O₃) concentration at Westminster, California is 29.043 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Westminster, California?

The current nitrogen dioxide (NO₂) concentration at Westminster, California is 5.944 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T13:00:00.000Z	27 \| good	4.953 \| good	15.593 \| good	28.855 \| good	0.197 \| good	6.36 \| good	0.189 \| good
2025-06-05T14:00:00.000Z	27 \| good	5.286 \| good	19.121 \| good	27.536 \| good	0.154 \| good	9.052 \| good	0.172 \| good
2025-06-05T15:00:00.000Z	27 \| good	5.007 \| good	25.448 \| good	28.353 \| good	0.165 \| good	9.933 \| good	0.197 \| good
2025-06-05T16:00:00.000Z	28 \| good	5.403 \| good	30.452 \| good	28.795 \| good	0.197 \| good	9.234 \| good	0.197 \| good
2025-06-05T17:00:00.000Z	27 \| good	5.474 \| good	28.357 \| good	28.974 \| good	0.218 \| good	12.424 \| good	0.214 \| good
2025-06-05T18:00:00.000Z	27 \| good	5.466 \| good	23.426 \| good	29.345 \| good	0.235 \| good	13.622 \| good	0.277 \| good
2025-06-05T19:00:00.000Z	44 \| good	8.062 \| good	23.9 \| good	31.28 \| good	0.306 \| good	10.365 \| good	0.152 \| good
2025-06-05T20:00:00.000Z	38 \| good	6.712 \| good	24.626 \| good	33.915 \| good	0.301 \| good	10.429 \| good	0.191 \| good
2025-06-05T21:00:00.000Z	34 \| good	6.44 \| good	25.856 \| good	37.402 \| good	0.401 \| good	9.538 \| good	0.22 \| good
2025-06-05T22:00:00.000Z	38 \| good	6.733 \| good	23.448 \| good	37.698 \| good	0.215 \| good	7.674 \| good	0.151 \| good
2025-06-05T23:00:00.000Z	35 \| good	5.28 \| good	22.63 \| good	37.98 \| good	0.326 \| good	6.402 \| good	0.151 \| good
2025-06-06T00:00:00.000Z	35 \| good	4.473 \| good	19.182 \| good	38.403 \| good	0.53 \| good	6.227 \| good	0.151 \| good
2025-06-06T01:00:00.000Z	33 \| good	4.131 \| good	17.609 \| good	36.314 \| good	0.596 \| good	5.562 \| good	0.161 \| good
2025-06-06T02:00:00.000Z	31 \| good	5.111 \| good	13.982 \| good	33.392 \| good	0.558 \| good	6.398 \| good	0.19 \| good
2025-06-06T03:00:00.000Z	31 \| good	5.165 \| good	13.917 \| good	33.081 \| good	0.464 \| good	7.327 \| good	0.198 \| good
2025-06-06T04:00:00.000Z	30 \| good	4.316 \| good	15.777 \| good	31.81 \| good	0.374 \| good	7.616 \| good	0.172 \| good
2025-06-06T05:00:00.000Z	31 \| good	4.696 \| good	15.239 \| good	33.396 \| good	0.481 \| good	8.257 \| good	0.168 \| good
2025-06-06T06:00:00.000Z	28 \| good	4.047 \| good	14.006 \| good	30.42 \| good	0.243 \| good	7.957 \| good	0.193 \| good
2025-06-06T07:00:00.000Z	27 \| good	4.417 \| good	18.587 \| good	29.443 \| good	0.177 \| good	7.827 \| good	0.222 \| good
2025-06-06T08:00:00.000Z	28 \| good	3.995 \| good	14.887 \| good	29.834 \| good	0.205 \| good	6.781 \| good	0.184 \| good
2025-06-06T09:00:00.000Z	28 \| good	4.215 \| good	15.55 \| good	30.044 \| good	0.222 \| good	5.627 \| good	0.147 \| good
2025-06-06T10:00:00.000Z	28 \| good	4.907 \| good	15.815 \| good	30.2 \| good	0.268 \| good	5.835 \| good	0.137 \| good
2025-06-06T11:00:00.000Z	29 \| good	5.135 \| good	17.346 \| good	31.106 \| good	0.214 \| good	5.719 \| good	0.111 \| good
2025-06-06T12:00:00.000Z	28 \| good	5.103 \| good	17.087 \| good	29.835 \| good	0.196 \| good	6.536 \| good	0.163 \| good
2025-06-06T13:00:00.000Z	33 \| good	5.876 \| good	19.496 \| good	29.367 \| good	0.205 \| good	10.043 \| good	0.224 \| good
2025-06-06T14:00:00.000Z	33 \| good	6.275 \| good	21.125 \| good	27.842 \| good	0.151 \| good	12.021 \| good	0.193 \| good
2025-06-06T15:00:00.000Z	38 \| good	7.421 \| good	24.429 \| good	27.263 \| good	0.202 \| good	12.479 \| good	0.27 \| good
2025-06-06T16:00:00.000Z	49 \| good	8.553 \| good	29.672 \| good	28.238 \| good	0.308 \| good	13.239 \| good	0.228 \| good
2025-06-06T17:00:00.000Z	49 \| good	8.607 \| good	27.643 \| good	29.403 \| good	0.312 \| good	13.39 \| good	0.207 \| good
2025-06-06T18:00:00.000Z	49 \| good	9.139 \| good	27.615 \| good	29.676 \| good	0.376 \| good	13.464 \| good	0.211 \| good
2025-06-06T19:00:00.000Z	52 \| moderate	9.924 \| good	29.145 \| good	30.827 \| good	0.344 \| good	12.985 \| good	0.232 \| good
2025-06-06T20:00:00.000Z	52 \| moderate	9.57 \| good	31.767 \| good	34.673 \| good	0.316 \| good	11.639 \| good	0.207 \| good
2025-06-06T21:00:00.000Z	52 \| moderate	9.695 \| good	34.815 \| good	37.362 \| good	0.328 \| good	9.376 \| good	0.202 \| good
2025-06-06T22:00:00.000Z	54 \| moderate	10.679 \| good	29.102 \| good	39.437 \| good	0.251 \| good	8.253 \| good	0.172 \| good
2025-06-06T23:00:00.000Z	52 \| moderate	9.568 \| good	28.255 \| good	40.553 \| good	0.412 \| good	6.715 \| good	0.172 \| good
2025-06-07T00:00:00.000Z	49 \| good	8.739 \| good	24.591 \| good	38.51 \| good	0.427 \| good	6.259 \| good	0.151 \| good
2025-06-07T01:00:00.000Z	38 \| good	7.363 \| good	17.017 \| good	36.635 \| good	0.484 \| good	6.158 \| good	0.151 \| good
2025-06-07T02:00:00.000Z	38 \| good	6.97 \| good	17.387 \| good	35.857 \| good	0.464 \| good	6.678 \| good	0.172 \| good
2025-06-07T03:00:00.000Z	38 \| good	7.06 \| good	14.169 \| good	33.943 \| good	0.429 \| good	7.554 \| good	0.172 \| good
2025-06-07T04:00:00.000Z	33 \| good	6.074 \| good	16.734 \| good	33.592 \| good	0.489 \| good	7.932 \| good	0.172 \| good
2025-06-07T05:00:00.000Z	33 \| good	5.701 \| good	15.887 \| good	33.044 \| good	0.46 \| good	7.772 \| good	0.172 \| good
2025-06-07T06:00:00.000Z	30 \| good	5.279 \| good	15.777 \| good	31.89 \| good	0.301 \| good	8.656 \| good	0.205 \| good
2025-06-07T07:00:00.000Z	33 \| good	5.962 \| good	17.951 \| good	30.169 \| good	0.408 \| good	7.827 \| good	0.278 \| good
2025-06-07T08:00:00.000Z	33 \| good	6.036 \| good	17.767 \| good	29.149 \| good	0.374 \| good	7.535 \| good	0.205 \| good
2025-06-07T09:00:00.000Z	38 \| good	6.652 \| good	19.786 \| good	29.915 \| good	0.221 \| good	6.604 \| good	0.183 \| good
2025-06-07T10:00:00.000Z	38 \| good	7.019 \| good	21.458 \| good	29.816 \| good	0.169 \| good	5.659 \| good	0.139 \| good
2025-06-07T11:00:00.000Z	44 \| good	7.516 \| good	20.07 \| good	30.058 \| good	0.158 \| good	5.946 \| good	0.16 \| good
2025-06-07T12:00:00.000Z	44 \| good	7.829 \| good	19.85 \| good	29.488 \| good	0.155 \| good	5.154 \| good	0.153 \| good
2025-06-07T12:00:00.000Z	49 \| good	8.622 \| good	18.415 \| good	29.043 \| good	0.162 \| good	5.944 \| good	0.177 \| good
2025-06-07T13:00:00.000Z	33 \| good	5.653 \| good	24.945 \| good	22.413 \| good	3.583 \| good	7.713 \| good	0.139 \| good
2025-06-07T14:00:00.000Z	38 \| good	7.362 \| good	32.268 \| good	22.001 \| good	4.057 \| good	9.156 \| good	0.146 \| good
2025-06-07T15:00:00.000Z	44 \| good	7.943 \| good	34.717 \| good	22.41 \| good	4.531 \| good	10.599 \| good	0.153 \| good
2025-06-07T16:00:00.000Z	49 \| good	8.715 \| good	38.529 \| good	25.281 \| good	3.491 \| good	5.732 \| good	0.137 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	9.928 \| good	43.816 \| good	29.726 \| good	3.994 \| good	6.949 \| good	0.145 \| good
2025-06-07T18:00:00.000Z	52 \| moderate	9.721 \| good	43.078 \| good	36.151 \| good	4.496 \| good	8.166 \| good	0.153 \| good
2025-06-07T19:00:00.000Z	49 \| good	9.058 \| good	40.043 \| good	43.916 \| good	2.555 \| good	3.161 \| good	0.124 \| good
2025-06-07T20:00:00.000Z	49 \| good	9.178 \| good	40.372 \| good	48.153 \| good	3.081 \| good	3.985 \| good	0.132 \| good
2025-06-07T21:00:00.000Z	49 \| good	8.865 \| good	39.356 \| good	45.619 \| good	3.606 \| good	4.81 \| good	0.14 \| good
2025-06-07T22:00:00.000Z	40 \| good	7.103 \| good	31.165 \| good	42.625 \| good	1.916 \| good	2.999 \| good	0.119 \| good
2025-06-07T23:00:00.000Z	37 \| good	5.499 \| good	23.753 \| good	39.6 \| good	2.383 \| good	3.594 \| good	0.126 \| good
2025-06-08T00:00:00.000Z	44 \| good	8.133 \| good	35.563 \| good	36.427 \| good	2.85 \| good	4.189 \| good	0.133 \| good
2025-06-08T01:00:00.000Z	38 \| good	6.983 \| good	30.962 \| good	34.235 \| good	1.854 \| good	7.661 \| good	0.127 \| good
2025-06-08T02:00:00.000Z	33 \| good	6.014 \| good	26.788 \| good	27.002 \| good	2.305 \| good	8.746 \| good	0.133 \| good
2025-06-08T03:00:00.000Z	38 \| good	6.539 \| good	28.855 \| good	27.498 \| good	2.755 \| good	9.832 \| good	0.14 \| good
2025-06-08T04:00:00.000Z	38 \| good	6.502 \| good	28.952 \| good	26.711 \| good	2.244 \| good	11.812 \| good	0.134 \| good
2025-06-08T05:00:00.000Z	33 \| good	6.273 \| good	27.627 \| good	25.67 \| good	2.654 \| good	13.6 \| good	0.142 \| good
2025-06-08T06:00:00.000Z	33 \| good	6.222 \| good	27.553 \| good	26.45 \| good	3.063 \| good	15.389 \| good	0.15 \| good
2025-06-08T07:00:00.000Z	38 \| good	7.262 \| good	32.369 \| good	25.674 \| good	2.512 \| good	13.277 \| good	0.139 \| good
2025-06-08T08:00:00.000Z	44 \| good	7.785 \| good	34.176 \| good	24.694 \| good	2.904 \| good	15.229 \| good	0.147 \| good
2025-06-08T09:00:00.000Z	38 \| good	6.858 \| good	30.31 \| good	25.287 \| good	3.297 \| good	17.182 \| good	0.154 \| good
2025-06-08T10:00:00.000Z	33 \| good	6.413 \| good	28.388 \| good	25.378 \| good	2.976 \| good	12.917 \| good	0.134 \| good
2025-06-08T11:00:00.000Z	27 \| good	5.397 \| good	23.626 \| good	25.795 \| good	3.266 \| good	14.778 \| good	0.141 \| good
2025-06-08T12:00:00.000Z	27 \| good	4.91 \| good	21.575 \| good	26.597 \| good	3.556 \| good	16.639 \| good	0.149 \| good
2025-06-08T13:00:00.000Z	38 \| good	6.697 \| good	29.713 \| good	22.156 \| good	4.154 \| good	9.968 \| good	0.144 \| good
2025-06-08T14:00:00.000Z	38 \| good	7.143 \| good	31.407 \| good	22.696 \| good	4.277 \| good	10.612 \| good	0.151 \| good
2025-06-08T15:00:00.000Z	44 \| good	8.024 \| good	35.253 \| good	24.61 \| good	4.401 \| good	11.256 \| good	0.158 \| good
2025-06-08T16:00:00.000Z	49 \| good	9.475 \| good	41.779 \| good	27.049 \| good	4.415 \| good	7.493 \| good	0.14 \| good
2025-06-08T17:00:00.000Z	56 \| moderate	11.992 \| good	53.635 \| good	31.291 \| good	4.629 \| good	8.468 \| good	0.147 \| good
2025-06-08T18:00:00.000Z	54 \| moderate	10.721 \| good	47.664 \| good	34.296 \| good	4.842 \| good	9.443 \| good	0.155 \| good
2025-06-08T19:00:00.000Z	52 \| moderate	9.756 \| good	43.169 \| good	38.458 \| good	3.517 \| good	4.501 \| good	0.125 \| good
2025-06-08T20:00:00.000Z	49 \| good	9.193 \| good	40.795 \| good	44.215 \| good	3.962 \| good	5.392 \| good	0.132 \| good
2025-06-08T21:00:00.000Z	49 \| good	9.145 \| good	40.461 \| good	47.099 \| good	4.408 \| good	6.283 \| good	0.14 \| good
2025-06-08T22:00:00.000Z	52 \| moderate	9.571 \| good	42.697 \| good	46.686 \| good	2.594 \| good	3.764 \| good	0.12 \| good
2025-06-08T23:00:00.000Z	44 \| good	7.992 \| good	35.274 \| good	45.416 \| good	3.145 \| good	4.491 \| good	0.127 \| good
2025-06-09T00:00:00.000Z	52 \| moderate	9.842 \| good	43.86 \| good	42.174 \| good	3.696 \| good	5.217 \| good	0.133 \| good
2025-06-09T01:00:00.000Z	49 \| good	8.543 \| good	37.378 \| good	37.581 \| good	2.229 \| good	8.236 \| good	0.129 \| good
2025-06-09T02:00:00.000Z	49 \| good	9.144 \| good	40.832 \| good	32.236 \| good	2.781 \| good	9.541 \| good	0.136 \| good
2025-06-09T03:00:00.000Z	44 \| good	8.228 \| good	36.272 \| good	27.085 \| good	3.333 \| good	10.845 \| good	0.143 \| good
2025-06-09T04:00:00.000Z	49 \| good	9.37 \| good	41.279 \| good	23.934 \| good	2.634 \| good	13.177 \| good	0.142 \| good
2025-06-09T05:00:00.000Z	44 \| good	8.293 \| good	36.479 \| good	20.306 \| good	3.131 \| good	15.215 \| good	0.151 \| good
2025-06-09T06:00:00.000Z	62 \| moderate	14.978 \| fine	17.217 \| good	21.35 \| good	3.658 \| good	17.339 \| good	0.16 \| good
2025-06-09T07:00:00.000Z	49 \| good	9.024 \| good	39.614 \| good	17.82 \| good	2.64 \| good	15.605 \| good	0.152 \| good
2025-06-09T08:00:00.000Z	52 \| moderate	9.893 \| good	43.853 \| good	17.91 \| good	3.118 \| good	17.481 \| good	0.16 \| good
2025-06-09T09:00:00.000Z	44 \| good	8.466 \| good	37.274 \| good	18.304 \| good	3.596 \| good	19.357 \| good	0.168 \| good
2025-06-09T10:00:00.000Z	44 \| good	8.283 \| good	36.39 \| good	20.923 \| good	2.902 \| good	15.538 \| good	0.145 \| good
2025-06-09T11:00:00.000Z	44 \| good	7.658 \| good	33.344 \| good	21.891 \| good	3.179 \| good	16.684 \| good	0.151 \| good
2025-06-09T12:00:00.000Z	66 \| moderate	16.828 \| fine	19.323 \| good	14.973 \| good	3.489 \| good	17.989 \| good	0.158 \| good

Live air quality index in Westminster, California today

Major air pollutants in Westminster, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Westminster, California air quality map: Track AQI near you

Air quality in nearby cities

Stanton, California

Garden Grove, California

Fountain Valley, California

Cypress, California

Los Alamitos, California

Rossmoor, California

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Frequently asked questions

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What is the current concentration of PM2.5 in Westminster, California?

What is the current concentration of PM10 in Westminster, California?

What is the current concentration of carbon monoxide (CO) in Westminster, California?

What is the current concentration of sulfur dioxide (SO2) in Westminster, California?

What is the current concentration of ozone (O3) in Westminster, California?

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the current concentration of PM_2.5 in Westminster, California?

What is the current concentration of PM₁₀ in Westminster, California?

What is the current concentration of sulfur dioxide (SO₂) in Westminster, California?

What is the current concentration of ozone (O₃) in Westminster, California?

What is the current concentration of nitrogen dioxide (NO₂) in Westminster, California?