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

The current PM10 concentration at Westminster, California is 12.057 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Westminster, California is 0.399 ppb.

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

The current ozone (O3) concentration at Westminster, California is 25.583 ppm.

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

The current nitrogen dioxide (NO2) concentration at Westminster, California is 9.775 ppb.

Westminster, California live air quality index now

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)

7.78 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

19.44 μg/m³

155

255

425

605+

Ozone (O₃)

38.29 ppb

201

201+

Sulfur Dioxide (SO₂)

0.33 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.18 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
2025-07-25T23:00:00.000Z	38 \| good	6.526 \| good	21.862 \| good	31.848 \| good	0.28 \| good	5.01 \| good	0.229 \| good
2025-07-26T00:00:00.000Z	28 \| good	4.002 \| good	14.071 \| good	29.82 \| good	0.495 \| good	5.612 \| good	0.229 \| good
2025-07-26T01:00:00.000Z	26 \| good	3.393 \| good	15.438 \| good	27.94 \| good	0.577 \| good	5.597 \| good	0.235 \| good
2025-07-26T02:00:00.000Z	25 \| good	3.026 \| good	12.097 \| good	26.522 \| good	0.546 \| good	6.84 \| good	0.217 \| good
2025-07-26T03:00:00.000Z	24 \| good	3.205 \| good	14.742 \| good	25.511 \| good	0.652 \| good	6.965 \| good	0.176 \| good
2025-07-26T04:00:00.000Z	24 \| good	3.43 \| good	15.568 \| good	25.813 \| good	0.492 \| good	7.82 \| good	0.254 \| good
2025-07-26T05:00:00.000Z	27 \| good	4.585 \| good	12.68 \| good	24.634 \| good	0.374 \| good	10.014 \| good	0.254 \| good
2025-07-26T06:00:00.000Z	33 \| good	5.582 \| good	14.957 \| good	24.23 \| good	0.363 \| good	10.017 \| good	0.295 \| good
2025-07-26T07:00:00.000Z	27 \| good	5.442 \| good	11.871 \| good	20.106 \| good	0.332 \| good	9.586 \| good	0.301 \| good
2025-07-26T08:00:00.000Z	27 \| good	4.663 \| good	12.7 \| good	18.223 \| good	0.228 \| good	8.567 \| good	0.248 \| good
2025-07-26T09:00:00.000Z	22 \| good	3.988 \| good	11.674 \| good	17.623 \| good	0.247 \| good	7.144 \| good	0.212 \| good
2025-07-26T10:00:00.000Z	22 \| good	3.561 \| good	10.932 \| good	19.759 \| good	0.314 \| good	5.97 \| good	0.186 \| good
2025-07-26T11:00:00.000Z	22 \| good	4.246 \| good	13.785 \| good	19.559 \| good	0.217 \| good	4.185 \| good	0.192 \| good
2025-07-26T12:00:00.000Z	22 \| good	3.822 \| good	9.894 \| good	22.458 \| good	0.177 \| good	4.943 \| good	0.195 \| good
2025-07-26T13:00:00.000Z	27 \| good	4.991 \| good	11.189 \| good	23.29 \| good	0.181 \| good	5.487 \| good	0.195 \| good
2025-07-26T14:00:00.000Z	21 \| good	2.577 \| good	7.721 \| good	22.818 \| good	0.272 \| good	7.004 \| good	0.275 \| good
2025-07-26T15:00:00.000Z	22 \| good	2.495 \| good	12.443 \| good	23.907 \| good	0.179 \| good	6.657 \| good	0.263 \| good
2025-07-26T16:00:00.000Z	27 \| good	4.861 \| good	10.436 \| good	25.403 \| good	0.164 \| good	5.29 \| good	0.236 \| good
2025-07-26T17:00:00.000Z	27 \| good	4.664 \| good	12.416 \| good	27.694 \| good	0.192 \| good	5.31 \| good	0.236 \| good
2025-07-26T18:00:00.000Z	27 \| good	4.438 \| good	16.224 \| good	29.089 \| good	0.185 \| good	4.094 \| good	0.195 \| good
2025-07-26T19:00:00.000Z	30 \| good	4.943 \| good	14.824 \| good	32.475 \| good	0.194 \| good	4.497 \| good	0.224 \| good
2025-07-26T20:00:00.000Z	33 \| good	5.848 \| good	16.718 \| good	34.539 \| good	0.228 \| good	4.534 \| good	0.21 \| good
2025-07-26T21:00:00.000Z	33 \| good	6.194 \| good	10.208 \| good	35.606 \| good	0.297 \| good	5.21 \| good	0.174 \| good
2025-07-26T22:00:00.000Z	38 \| good	7.067 \| good	14.295 \| good	37.686 \| good	0.28 \| good	4.87 \| good	0.181 \| good
2025-07-26T23:00:00.000Z	34 \| good	5.65 \| good	14.688 \| good	37.052 \| good	0.328 \| good	5.713 \| good	0.181 \| good
2025-07-27T00:00:00.000Z	33 \| good	4.374 \| good	13.414 \| good	35.814 \| good	0.794 \| good	5.183 \| good	0.217 \| good
2025-07-27T01:00:00.000Z	31 \| good	3.007 \| good	13.14 \| good	33.969 \| good	0.767 \| good	5.241 \| good	0.254 \| good
2025-07-27T02:00:00.000Z	31 \| good	2.711 \| good	13.452 \| good	33.135 \| good	0.689 \| good	5.865 \| good	0.217 \| good
2025-07-27T03:00:00.000Z	31 \| good	5.169 \| good	18.431 \| good	32.876 \| good	0.627 \| good	7.02 \| good	0.275 \| good
2025-07-27T04:00:00.000Z	32 \| good	4.664 \| good	18.588 \| good	35.495 \| good	0.462 \| good	7.929 \| good	0.212 \| good
2025-07-27T05:00:00.000Z	29 \| good	4.722 \| good	16.204 \| good	31.267 \| good	0.415 \| good	8.447 \| good	0.288 \| good
2025-07-27T06:00:00.000Z	38 \| good	6.773 \| good	17.396 \| good	28.557 \| good	0.257 \| good	8.855 \| good	0.323 \| good
2025-07-27T07:00:00.000Z	38 \| good	7.09 \| good	13.226 \| good	26.189 \| good	0.256 \| good	8.951 \| good	0.386 \| good
2025-07-27T08:00:00.000Z	38 \| good	7.431 \| good	15.491 \| good	24.411 \| good	0.191 \| good	9.658 \| good	0.399 \| good
2025-07-27T09:00:00.000Z	38 \| good	7.058 \| good	12.715 \| good	20.097 \| good	0.301 \| good	8.604 \| good	0.29 \| good
2025-07-27T10:00:00.000Z	38 \| good	6.772 \| good	13.098 \| good	19.493 \| good	0.3 \| good	8.604 \| good	0.29 \| good
2025-07-27T11:00:00.000Z	38 \| good	6.938 \| good	11.103 \| good	19.202 \| good	0.271 \| good	8.604 \| good	0.29 \| good
2025-07-27T12:00:00.000Z	38 \| good	7.216 \| good	11.818 \| good	18.096 \| good	0.169 \| good	5.601 \| good	0.14 \| good
2025-07-27T13:00:00.000Z	44 \| good	8.125 \| good	18.972 \| good	20.708 \| good	0.162 \| good	5.61 \| good	0.191 \| good
2025-07-27T14:00:00.000Z	38 \| good	7.494 \| good	14.419 \| good	19.122 \| good	0.165 \| good	6.726 \| good	0.217 \| good
2025-07-27T15:00:00.000Z	20 \| good	3.475 \| good	13.347 \| good	22.297 \| good	0.487 \| good	6.403 \| good	0.245 \| good
2025-07-27T16:00:00.000Z	22 \| good	4.242 \| good	15.338 \| good	22.785 \| good	0.373 \| good	5.215 \| good	0.174 \| good
2025-07-27T17:00:00.000Z	44 \| good	8.409 \| good	14.203 \| good	28.178 \| good	0.371 \| good	5.379 \| good	0.212 \| good
2025-07-27T18:00:00.000Z	31 \| good	5.201 \| good	15.503 \| good	34.075 \| good	0.417 \| good	5.761 \| good	0.25 \| good
2025-07-27T19:00:00.000Z	35 \| good	5.642 \| good	18.739 \| good	37.552 \| good	0.339 \| good	5.631 \| good	0.214 \| good
2025-07-27T20:00:00.000Z	49 \| good	8.595 \| good	19.547 \| good	38.056 \| good	0.278 \| good	5.873 \| good	0.212 \| good
2025-07-27T21:00:00.000Z	37 \| good	4.648 \| good	20.926 \| good	39.693 \| good	0.27 \| good	5.298 \| good	0.217 \| good
2025-07-27T22:00:00.000Z	44 \| good	7.776 \| good	19.44 \| good	38.29 \| good	0.334 \| good	5.18 \| good	0.181 \| good
2025-07-27T22:00:00.000Z	44 \| good	7.776 \| good	19.44 \| good	38.29 \| good	0.334 \| good	5.18 \| good	0.181 \| good
2025-07-24T07:00:00.000Z	13 \| good	2.101 \| good	8.176 \| good	14.394 \| good	2.172 \| good	10.881 \| good	0.128 \| good
2025-07-24T08:00:00.000Z	12 \| good	2.048 \| good	8.123 \| good	13.189 \| good	2.202 \| good	10.955 \| good	0.131 \| good
2025-07-24T09:00:00.000Z	11 \| good	1.883 \| good	8.111 \| good	12.272 \| good	2.231 \| good	11.029 \| good	0.134 \| good
2025-07-24T10:00:00.000Z	16 \| good	3.138 \| good	12.357 \| good	9.827 \| good	2.255 \| good	10.765 \| good	0.133 \| good
2025-07-24T11:00:00.000Z	11 \| good	2.418 \| good	10.258 \| good	9.286 \| good	2.278 \| good	10.502 \| good	0.132 \| good
2025-07-24T12:00:00.000Z	11 \| good	1.663 \| good	7.204 \| good	8.053 \| good	2.301 \| good	10.238 \| good	0.132 \| good
2025-07-24T13:00:00.000Z	22 \| good	3.787 \| good	16.211 \| good	8.229 \| good	2.591 \| good	9.546 \| good	0.133 \| good
2025-07-24T14:00:00.000Z	16 \| good	3.034 \| good	12.305 \| good	10.887 \| good	2.88 \| good	8.854 \| good	0.135 \| good
2025-07-24T15:00:00.000Z	16 \| good	2.714 \| good	11.258 \| good	12.894 \| good	3.169 \| good	8.162 \| good	0.137 \| good
2025-07-24T16:00:00.000Z	14 \| good	2.405 \| good	10.194 \| good	15.42 \| good	3.142 \| good	7.614 \| good	0.135 \| good
2025-07-24T17:00:00.000Z	18 \| good	2.258 \| good	9.176 \| good	18.641 \| good	3.115 \| good	7.065 \| good	0.132 \| good
2025-07-24T18:00:00.000Z	20 \| good	1.324 \| good	5.183 \| good	22.296 \| good	3.087 \| good	6.517 \| good	0.13 \| good
2025-07-24T19:00:00.000Z	26 \| good	0.923 \| good	4.005 \| good	28.411 \| good	2.679 \| good	5.362 \| good	0.125 \| good
2025-07-24T20:00:00.000Z	31 \| good	1.45 \| good	6.058 \| good	33.597 \| good	2.271 \| good	4.207 \| good	0.119 \| good
2025-07-24T21:00:00.000Z	31 \| good	1.796 \| good	7.09 \| good	34.372 \| good	1.863 \| good	3.052 \| good	0.114 \| good
2025-07-24T22:00:00.000Z	30 \| good	1.726 \| good	7.145 \| good	31.555 \| good	1.752 \| good	2.933 \| good	0.114 \| good
2025-07-24T23:00:00.000Z	23 \| good	1.799 \| good	7.131 \| good	25.017 \| good	1.641 \| good	2.814 \| good	0.114 \| good
2025-07-25T00:00:00.000Z	22 \| good	2.308 \| good	9.186 \| good	24.081 \| good	1.53 \| good	2.695 \| good	0.113 \| good
2025-07-25T01:00:00.000Z	20 \| good	1.114 \| good	4.924 \| good	21.771 \| good	1.568 \| good	3.969 \| good	0.117 \| good
2025-07-25T02:00:00.000Z	19 \| good	1.349 \| good	5.107 \| good	19.696 \| good	1.606 \| good	5.244 \| good	0.121 \| good
2025-07-25T03:00:00.000Z	19 \| good	1.319 \| good	5.023 \| good	19.52 \| good	1.644 \| good	6.518 \| good	0.125 \| good
2025-07-25T04:00:00.000Z	19 \| good	1.189 \| good	4.982 \| good	19.759 \| good	1.757 \| good	7.646 \| good	0.127 \| good
2025-07-25T05:00:00.000Z	18 \| good	1.319 \| good	5.125 \| good	19.294 \| good	1.87 \| good	8.774 \| good	0.13 \| good
2025-07-25T06:00:00.000Z	18 \| good	0.742 \| good	3.011 \| good	19.003 \| good	1.983 \| good	9.902 \| good	0.133 \| good
2025-07-25T07:00:00.000Z	17 \| good	1.633 \| good	7.006 \| good	18.35 \| good	2.133 \| good	10.45 \| good	0.136 \| good
2025-07-25T08:00:00.000Z	16 \| good	2.388 \| good	10.001 \| good	16.866 \| good	2.283 \| good	10.998 \| good	0.139 \| good
2025-07-25T09:00:00.000Z	15 \| good	2.249 \| good	9.086 \| good	16.052 \| good	2.433 \| good	11.547 \| good	0.142 \| good
2025-07-25T10:00:00.000Z	16 \| good	3.208 \| good	14.051 \| good	14.864 \| good	2.46 \| good	11.404 \| good	0.142 \| good
2025-07-25T11:00:00.000Z	16 \| good	2.862 \| good	12.125 \| good	14.162 \| good	2.487 \| good	11.261 \| good	0.142 \| good
2025-07-25T12:00:00.000Z	16 \| good	2.82 \| good	11.226 \| good	8.779 \| good	2.514 \| good	11.118 \| good	0.141 \| good
2025-07-25T13:00:00.000Z	16 \| good	3.116 \| good	12.271 \| good	10.228 \| good	2.7 \| good	9.962 \| good	0.141 \| good
2025-07-25T14:00:00.000Z	13 \| good	1.849 \| good	7.997 \| good	14.003 \| good	2.887 \| good	8.805 \| good	0.142 \| good
2025-07-25T15:00:00.000Z	15 \| good	1.116 \| good	4.142 \| good	15.822 \| good	3.074 \| good	7.649 \| good	0.142 \| good
2025-07-25T16:00:00.000Z	16 \| good	0.869 \| good	2.997 \| good	17.483 \| good	2.947 \| good	6.885 \| good	0.139 \| good
2025-07-25T17:00:00.000Z	19 \| good	0.742 \| good	2.937 \| good	20.101 \| good	2.82 \| good	6.122 \| good	0.136 \| good
2025-07-25T18:00:00.000Z	22 \| good	1.132 \| good	4.895 \| good	23.881 \| good	2.693 \| good	5.359 \| good	0.132 \| good
2025-07-25T19:00:00.000Z	24 \| good	1.273 \| good	4.974 \| good	26.448 \| good	2.423 \| good	4.535 \| good	0.129 \| good
2025-07-25T20:00:00.000Z	26 \| good	0.394 \| good	1.917 \| good	28.208 \| good	2.153 \| good	3.712 \| good	0.126 \| good
2025-07-25T21:00:00.000Z	29 \| good	1.07 \| good	4.039 \| good	31.265 \| good	1.883 \| good	2.889 \| good	0.124 \| good
2025-07-25T22:00:00.000Z	31 \| good	1.853 \| good	7.993 \| good	33.055 \| good	1.827 \| good	2.859 \| good	0.123 \| good
2025-07-25T23:00:00.000Z	29 \| good	2.057 \| good	8.118 \| good	30.616 \| good	1.771 \| good	2.828 \| good	0.122 \| good
2025-07-26T00:00:00.000Z	25 \| good	1.468 \| good	6.023 \| good	26.537 \| good	1.715 \| good	2.797 \| good	0.121 \| good
2025-07-26T01:00:00.000Z	21 \| good	1.426 \| good	6.013 \| good	23.059 \| good	1.711 \| good	4.002 \| good	0.123 \| good
2025-07-26T02:00:00.000Z	22 \| good	0.463 \| good	1.967 \| good	23.599 \| good	1.706 \| good	5.207 \| good	0.124 \| good
2025-07-26T03:00:00.000Z	21 \| good	1.951 \| good	7.942 \| good	23.4 \| good	1.701 \| good	6.412 \| good	0.126 \| good
2025-07-26T04:00:00.000Z	21 \| good	0.601 \| good	2.036 \| good	23.077 \| good	1.746 \| good	7.131 \| good	0.127 \| good
2025-07-26T05:00:00.000Z	20 \| good	0.535 \| good	2.051 \| good	22.49 \| good	1.792 \| good	7.849 \| good	0.127 \| good
2025-07-26T06:00:00.000Z	38 \| good	6.668 \| good	7.759 \| good	25.591 \| good	1.867 \| good	8.66 \| good	0.128 \| good

Westminster

Get reliable air quality data to drive your business

Westminster, California air quality map: Track AQI near you

0.19ppm

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 09:00:00 on 2025-07-23.

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 03:00:00 on 2025-07-24.

What is the current air quality in Westminster, California?

The current air quality in Westminster, California is 24, 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 O3.

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 4.453 μg/m³.

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

The current PM₁₀ concentration at Westminster, California is 12.057 μg/m³.

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

The current carbon monoxide (CO) concentration at Westminster, California is 0.254 ppm.

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

The current sulfur dioxide (SO₂) concentration at Westminster, California is 0.399 ppb.

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

The current ozone (O₃) concentration at Westminster, California is 25.583 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Westminster, California is 9.775 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-25T23:00:00.000Z	38 \| good	6.526 \| good	21.862 \| good	31.848 \| good	0.28 \| good	5.01 \| good	0.229 \| good
2025-07-26T00:00:00.000Z	28 \| good	4.002 \| good	14.071 \| good	29.82 \| good	0.495 \| good	5.612 \| good	0.229 \| good
2025-07-26T01:00:00.000Z	26 \| good	3.393 \| good	15.438 \| good	27.94 \| good	0.577 \| good	5.597 \| good	0.235 \| good
2025-07-26T02:00:00.000Z	25 \| good	3.026 \| good	12.097 \| good	26.522 \| good	0.546 \| good	6.84 \| good	0.217 \| good
2025-07-26T03:00:00.000Z	24 \| good	3.205 \| good	14.742 \| good	25.511 \| good	0.652 \| good	6.965 \| good	0.176 \| good
2025-07-26T04:00:00.000Z	24 \| good	3.43 \| good	15.568 \| good	25.813 \| good	0.492 \| good	7.82 \| good	0.254 \| good
2025-07-26T05:00:00.000Z	27 \| good	4.585 \| good	12.68 \| good	24.634 \| good	0.374 \| good	10.014 \| good	0.254 \| good
2025-07-26T06:00:00.000Z	33 \| good	5.582 \| good	14.957 \| good	24.23 \| good	0.363 \| good	10.017 \| good	0.295 \| good
2025-07-26T07:00:00.000Z	27 \| good	5.442 \| good	11.871 \| good	20.106 \| good	0.332 \| good	9.586 \| good	0.301 \| good
2025-07-26T08:00:00.000Z	27 \| good	4.663 \| good	12.7 \| good	18.223 \| good	0.228 \| good	8.567 \| good	0.248 \| good
2025-07-26T09:00:00.000Z	22 \| good	3.988 \| good	11.674 \| good	17.623 \| good	0.247 \| good	7.144 \| good	0.212 \| good
2025-07-26T10:00:00.000Z	22 \| good	3.561 \| good	10.932 \| good	19.759 \| good	0.314 \| good	5.97 \| good	0.186 \| good
2025-07-26T11:00:00.000Z	22 \| good	4.246 \| good	13.785 \| good	19.559 \| good	0.217 \| good	4.185 \| good	0.192 \| good
2025-07-26T12:00:00.000Z	22 \| good	3.822 \| good	9.894 \| good	22.458 \| good	0.177 \| good	4.943 \| good	0.195 \| good
2025-07-26T13:00:00.000Z	27 \| good	4.991 \| good	11.189 \| good	23.29 \| good	0.181 \| good	5.487 \| good	0.195 \| good
2025-07-26T14:00:00.000Z	21 \| good	2.577 \| good	7.721 \| good	22.818 \| good	0.272 \| good	7.004 \| good	0.275 \| good
2025-07-26T15:00:00.000Z	22 \| good	2.495 \| good	12.443 \| good	23.907 \| good	0.179 \| good	6.657 \| good	0.263 \| good
2025-07-26T16:00:00.000Z	27 \| good	4.861 \| good	10.436 \| good	25.403 \| good	0.164 \| good	5.29 \| good	0.236 \| good
2025-07-26T17:00:00.000Z	27 \| good	4.664 \| good	12.416 \| good	27.694 \| good	0.192 \| good	5.31 \| good	0.236 \| good
2025-07-26T18:00:00.000Z	27 \| good	4.438 \| good	16.224 \| good	29.089 \| good	0.185 \| good	4.094 \| good	0.195 \| good
2025-07-26T19:00:00.000Z	30 \| good	4.943 \| good	14.824 \| good	32.475 \| good	0.194 \| good	4.497 \| good	0.224 \| good
2025-07-26T20:00:00.000Z	33 \| good	5.848 \| good	16.718 \| good	34.539 \| good	0.228 \| good	4.534 \| good	0.21 \| good
2025-07-26T21:00:00.000Z	33 \| good	6.194 \| good	10.208 \| good	35.606 \| good	0.297 \| good	5.21 \| good	0.174 \| good
2025-07-26T22:00:00.000Z	38 \| good	7.067 \| good	14.295 \| good	37.686 \| good	0.28 \| good	4.87 \| good	0.181 \| good
2025-07-26T23:00:00.000Z	34 \| good	5.65 \| good	14.688 \| good	37.052 \| good	0.328 \| good	5.713 \| good	0.181 \| good
2025-07-27T00:00:00.000Z	33 \| good	4.374 \| good	13.414 \| good	35.814 \| good	0.794 \| good	5.183 \| good	0.217 \| good
2025-07-27T01:00:00.000Z	31 \| good	3.007 \| good	13.14 \| good	33.969 \| good	0.767 \| good	5.241 \| good	0.254 \| good
2025-07-27T02:00:00.000Z	31 \| good	2.711 \| good	13.452 \| good	33.135 \| good	0.689 \| good	5.865 \| good	0.217 \| good
2025-07-27T03:00:00.000Z	31 \| good	5.169 \| good	18.431 \| good	32.876 \| good	0.627 \| good	7.02 \| good	0.275 \| good
2025-07-27T04:00:00.000Z	32 \| good	4.664 \| good	18.588 \| good	35.495 \| good	0.462 \| good	7.929 \| good	0.212 \| good
2025-07-27T05:00:00.000Z	29 \| good	4.722 \| good	16.204 \| good	31.267 \| good	0.415 \| good	8.447 \| good	0.288 \| good
2025-07-27T06:00:00.000Z	38 \| good	6.773 \| good	17.396 \| good	28.557 \| good	0.257 \| good	8.855 \| good	0.323 \| good
2025-07-27T07:00:00.000Z	38 \| good	7.09 \| good	13.226 \| good	26.189 \| good	0.256 \| good	8.951 \| good	0.386 \| good
2025-07-27T08:00:00.000Z	38 \| good	7.431 \| good	15.491 \| good	24.411 \| good	0.191 \| good	9.658 \| good	0.399 \| good
2025-07-27T09:00:00.000Z	38 \| good	7.058 \| good	12.715 \| good	20.097 \| good	0.301 \| good	8.604 \| good	0.29 \| good
2025-07-27T10:00:00.000Z	38 \| good	6.772 \| good	13.098 \| good	19.493 \| good	0.3 \| good	8.604 \| good	0.29 \| good
2025-07-27T11:00:00.000Z	38 \| good	6.938 \| good	11.103 \| good	19.202 \| good	0.271 \| good	8.604 \| good	0.29 \| good
2025-07-27T12:00:00.000Z	38 \| good	7.216 \| good	11.818 \| good	18.096 \| good	0.169 \| good	5.601 \| good	0.14 \| good
2025-07-27T13:00:00.000Z	44 \| good	8.125 \| good	18.972 \| good	20.708 \| good	0.162 \| good	5.61 \| good	0.191 \| good
2025-07-27T14:00:00.000Z	38 \| good	7.494 \| good	14.419 \| good	19.122 \| good	0.165 \| good	6.726 \| good	0.217 \| good
2025-07-27T15:00:00.000Z	20 \| good	3.475 \| good	13.347 \| good	22.297 \| good	0.487 \| good	6.403 \| good	0.245 \| good
2025-07-27T16:00:00.000Z	22 \| good	4.242 \| good	15.338 \| good	22.785 \| good	0.373 \| good	5.215 \| good	0.174 \| good
2025-07-27T17:00:00.000Z	44 \| good	8.409 \| good	14.203 \| good	28.178 \| good	0.371 \| good	5.379 \| good	0.212 \| good
2025-07-27T18:00:00.000Z	31 \| good	5.201 \| good	15.503 \| good	34.075 \| good	0.417 \| good	5.761 \| good	0.25 \| good
2025-07-27T19:00:00.000Z	35 \| good	5.642 \| good	18.739 \| good	37.552 \| good	0.339 \| good	5.631 \| good	0.214 \| good
2025-07-27T20:00:00.000Z	49 \| good	8.595 \| good	19.547 \| good	38.056 \| good	0.278 \| good	5.873 \| good	0.212 \| good
2025-07-27T21:00:00.000Z	37 \| good	4.648 \| good	20.926 \| good	39.693 \| good	0.27 \| good	5.298 \| good	0.217 \| good
2025-07-27T22:00:00.000Z	44 \| good	7.776 \| good	19.44 \| good	38.29 \| good	0.334 \| good	5.18 \| good	0.181 \| good
2025-07-27T22:00:00.000Z	44 \| good	7.776 \| good	19.44 \| good	38.29 \| good	0.334 \| good	5.18 \| good	0.181 \| good
2025-07-24T07:00:00.000Z	13 \| good	2.101 \| good	8.176 \| good	14.394 \| good	2.172 \| good	10.881 \| good	0.128 \| good
2025-07-24T08:00:00.000Z	12 \| good	2.048 \| good	8.123 \| good	13.189 \| good	2.202 \| good	10.955 \| good	0.131 \| good
2025-07-24T09:00:00.000Z	11 \| good	1.883 \| good	8.111 \| good	12.272 \| good	2.231 \| good	11.029 \| good	0.134 \| good
2025-07-24T10:00:00.000Z	16 \| good	3.138 \| good	12.357 \| good	9.827 \| good	2.255 \| good	10.765 \| good	0.133 \| good
2025-07-24T11:00:00.000Z	11 \| good	2.418 \| good	10.258 \| good	9.286 \| good	2.278 \| good	10.502 \| good	0.132 \| good
2025-07-24T12:00:00.000Z	11 \| good	1.663 \| good	7.204 \| good	8.053 \| good	2.301 \| good	10.238 \| good	0.132 \| good
2025-07-24T13:00:00.000Z	22 \| good	3.787 \| good	16.211 \| good	8.229 \| good	2.591 \| good	9.546 \| good	0.133 \| good
2025-07-24T14:00:00.000Z	16 \| good	3.034 \| good	12.305 \| good	10.887 \| good	2.88 \| good	8.854 \| good	0.135 \| good
2025-07-24T15:00:00.000Z	16 \| good	2.714 \| good	11.258 \| good	12.894 \| good	3.169 \| good	8.162 \| good	0.137 \| good
2025-07-24T16:00:00.000Z	14 \| good	2.405 \| good	10.194 \| good	15.42 \| good	3.142 \| good	7.614 \| good	0.135 \| good
2025-07-24T17:00:00.000Z	18 \| good	2.258 \| good	9.176 \| good	18.641 \| good	3.115 \| good	7.065 \| good	0.132 \| good
2025-07-24T18:00:00.000Z	20 \| good	1.324 \| good	5.183 \| good	22.296 \| good	3.087 \| good	6.517 \| good	0.13 \| good
2025-07-24T19:00:00.000Z	26 \| good	0.923 \| good	4.005 \| good	28.411 \| good	2.679 \| good	5.362 \| good	0.125 \| good
2025-07-24T20:00:00.000Z	31 \| good	1.45 \| good	6.058 \| good	33.597 \| good	2.271 \| good	4.207 \| good	0.119 \| good
2025-07-24T21:00:00.000Z	31 \| good	1.796 \| good	7.09 \| good	34.372 \| good	1.863 \| good	3.052 \| good	0.114 \| good
2025-07-24T22:00:00.000Z	30 \| good	1.726 \| good	7.145 \| good	31.555 \| good	1.752 \| good	2.933 \| good	0.114 \| good
2025-07-24T23:00:00.000Z	23 \| good	1.799 \| good	7.131 \| good	25.017 \| good	1.641 \| good	2.814 \| good	0.114 \| good
2025-07-25T00:00:00.000Z	22 \| good	2.308 \| good	9.186 \| good	24.081 \| good	1.53 \| good	2.695 \| good	0.113 \| good
2025-07-25T01:00:00.000Z	20 \| good	1.114 \| good	4.924 \| good	21.771 \| good	1.568 \| good	3.969 \| good	0.117 \| good
2025-07-25T02:00:00.000Z	19 \| good	1.349 \| good	5.107 \| good	19.696 \| good	1.606 \| good	5.244 \| good	0.121 \| good
2025-07-25T03:00:00.000Z	19 \| good	1.319 \| good	5.023 \| good	19.52 \| good	1.644 \| good	6.518 \| good	0.125 \| good
2025-07-25T04:00:00.000Z	19 \| good	1.189 \| good	4.982 \| good	19.759 \| good	1.757 \| good	7.646 \| good	0.127 \| good
2025-07-25T05:00:00.000Z	18 \| good	1.319 \| good	5.125 \| good	19.294 \| good	1.87 \| good	8.774 \| good	0.13 \| good
2025-07-25T06:00:00.000Z	18 \| good	0.742 \| good	3.011 \| good	19.003 \| good	1.983 \| good	9.902 \| good	0.133 \| good
2025-07-25T07:00:00.000Z	17 \| good	1.633 \| good	7.006 \| good	18.35 \| good	2.133 \| good	10.45 \| good	0.136 \| good
2025-07-25T08:00:00.000Z	16 \| good	2.388 \| good	10.001 \| good	16.866 \| good	2.283 \| good	10.998 \| good	0.139 \| good
2025-07-25T09:00:00.000Z	15 \| good	2.249 \| good	9.086 \| good	16.052 \| good	2.433 \| good	11.547 \| good	0.142 \| good
2025-07-25T10:00:00.000Z	16 \| good	3.208 \| good	14.051 \| good	14.864 \| good	2.46 \| good	11.404 \| good	0.142 \| good
2025-07-25T11:00:00.000Z	16 \| good	2.862 \| good	12.125 \| good	14.162 \| good	2.487 \| good	11.261 \| good	0.142 \| good
2025-07-25T12:00:00.000Z	16 \| good	2.82 \| good	11.226 \| good	8.779 \| good	2.514 \| good	11.118 \| good	0.141 \| good
2025-07-25T13:00:00.000Z	16 \| good	3.116 \| good	12.271 \| good	10.228 \| good	2.7 \| good	9.962 \| good	0.141 \| good
2025-07-25T14:00:00.000Z	13 \| good	1.849 \| good	7.997 \| good	14.003 \| good	2.887 \| good	8.805 \| good	0.142 \| good
2025-07-25T15:00:00.000Z	15 \| good	1.116 \| good	4.142 \| good	15.822 \| good	3.074 \| good	7.649 \| good	0.142 \| good
2025-07-25T16:00:00.000Z	16 \| good	0.869 \| good	2.997 \| good	17.483 \| good	2.947 \| good	6.885 \| good	0.139 \| good
2025-07-25T17:00:00.000Z	19 \| good	0.742 \| good	2.937 \| good	20.101 \| good	2.82 \| good	6.122 \| good	0.136 \| good
2025-07-25T18:00:00.000Z	22 \| good	1.132 \| good	4.895 \| good	23.881 \| good	2.693 \| good	5.359 \| good	0.132 \| good
2025-07-25T19:00:00.000Z	24 \| good	1.273 \| good	4.974 \| good	26.448 \| good	2.423 \| good	4.535 \| good	0.129 \| good
2025-07-25T20:00:00.000Z	26 \| good	0.394 \| good	1.917 \| good	28.208 \| good	2.153 \| good	3.712 \| good	0.126 \| good
2025-07-25T21:00:00.000Z	29 \| good	1.07 \| good	4.039 \| good	31.265 \| good	1.883 \| good	2.889 \| good	0.124 \| good
2025-07-25T22:00:00.000Z	31 \| good	1.853 \| good	7.993 \| good	33.055 \| good	1.827 \| good	2.859 \| good	0.123 \| good
2025-07-25T23:00:00.000Z	29 \| good	2.057 \| good	8.118 \| good	30.616 \| good	1.771 \| good	2.828 \| good	0.122 \| good
2025-07-26T00:00:00.000Z	25 \| good	1.468 \| good	6.023 \| good	26.537 \| good	1.715 \| good	2.797 \| good	0.121 \| good
2025-07-26T01:00:00.000Z	21 \| good	1.426 \| good	6.013 \| good	23.059 \| good	1.711 \| good	4.002 \| good	0.123 \| good
2025-07-26T02:00:00.000Z	22 \| good	0.463 \| good	1.967 \| good	23.599 \| good	1.706 \| good	5.207 \| good	0.124 \| good
2025-07-26T03:00:00.000Z	21 \| good	1.951 \| good	7.942 \| good	23.4 \| good	1.701 \| good	6.412 \| good	0.126 \| good
2025-07-26T04:00:00.000Z	21 \| good	0.601 \| good	2.036 \| good	23.077 \| good	1.746 \| good	7.131 \| good	0.127 \| good
2025-07-26T05:00:00.000Z	20 \| good	0.535 \| good	2.051 \| good	22.49 \| good	1.792 \| good	7.849 \| good	0.127 \| good
2025-07-26T06:00:00.000Z	38 \| good	6.668 \| good	7.759 \| good	25.591 \| good	1.867 \| good	8.66 \| good	0.128 \| good

Westminster, California live air quality index now

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)

Track live Westminster, California air quality forecast and history

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

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

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?

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

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?