What are the current PM10 levels at Westminster, Colorado?

The current PM10 levels in Westminster, Colorado are 4.528 μg/m3.

What are the current sulfur dioxide (SO2) levels at Westminster, Colorado?

The current sulfur dioxide (SO2) levels in Westminster, Colorado are 0.107 ppb.

What are the current ozone (O3) levels at Westminster, Colorado?

The current ozone (O3) levels at Westminster, Colorado is 40.272 ppm.

What are the current nitrogen dioxide (NO2) levels at Westminster, Colorado?

The current nitrogen dioxide (NO2) levels at Westminster, Colorado is 4.153 ppb.

Real-time air quality index in Westminster, Colorado today

Q: What are the current PM2.5 levels in Westminster, Colorado?

The measured PM2.5 levels in Westminster, Colorado at present are 1.101 μg/m3.

Stay updated with real-time air quality in Westminster, Colorado 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, Colorado

Last updated: ... (Local time)

Common air pollutants in Westminster, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

1.10 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

4.53 μg/m³

155

255

425

605+

Ozone (O₃)

40.27 ppb

201

201+

Sulfur Dioxide (SO₂)

0.11 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.15 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.17 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Westminster, Colorado

Scroll To Air Quality Map

Track live Westminster, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T21:00:00.000Z	52 \| moderate	10.447 \| good	44.845 \| good	15.064 \| good	1.386 \| good	40.1 \| good	0.563 \| good
2025-12-05T22:00:00.000Z	54 \| moderate	11.082 \| good	45.755 \| good	12.696 \| good	1.024 \| good	38.291 \| good	0.588 \| good
2025-12-05T23:00:00.000Z	52 \| moderate	10.304 \| good	41.538 \| good	13.929 \| good	0.934 \| good	34.737 \| good	0.586 \| good
2025-12-06T00:00:00.000Z	52 \| moderate	9.956 \| good	40.354 \| good	11.561 \| good	0.687 \| good	36.979 \| good	0.75 \| good
2025-12-06T01:00:00.000Z	56 \| moderate	11.693 \| good	45.515 \| good	7.764 \| good	1.504 \| good	39.807 \| good	0.98 \| good
2025-12-06T02:00:00.000Z	60 \| moderate	14.333 \| fine	51.712 \| good	5.827 \| good	1.473 \| good	46.109 \| good	1.22 \| good
2025-12-06T03:00:00.000Z	67 \| moderate	17.991 \| fine	54.699 \| good	3.101 \| good	1.405 \| good	48.856 \| good	1.032 \| good
2025-12-06T04:00:00.000Z	67 \| moderate	17.997 \| fine	51.151 \| good	2.09 \| good	0.963 \| good	47.945 \| good	0.748 \| good
2025-12-06T05:00:00.000Z	58 \| moderate	13.134 \| fine	38.994 \| good	13.941 \| good	0.547 \| good	41.876 \| good	0.429 \| good
2025-12-06T06:00:00.000Z	52 \| moderate	9.751 \| good	28.913 \| good	5.466 \| good	0.271 \| good	36.796 \| good	0.38 \| good
2025-12-06T07:00:00.000Z	52 \| moderate	9.751 \| good	28.913 \| good	5.466 \| good	0.271 \| good	36.796 \| good	0.379 \| good
2025-12-06T08:00:00.000Z	38 \| good	6.551 \| good	20.592 \| good	8.537 \| good	0.363 \| good	35.393 \| good	0.398 \| good
2025-12-06T09:00:00.000Z	33 \| good	5.799 \| good	18.184 \| good	8.785 \| good	0.362 \| good	32.46 \| good	0.355 \| good
2025-12-06T10:00:00.000Z	38 \| good	5.048 \| good	16.955 \| good	6.237 \| good	0.471 \| good	39.769 \| good	0.422 \| good
2025-12-06T11:00:00.000Z	34 \| good	4.674 \| good	15.006 \| good	8.465 \| good	0.461 \| good	36.333 \| good	0.351 \| good
2025-12-06T12:00:00.000Z	36 \| good	4.2 \| good	14.154 \| good	6.092 \| good	0.713 \| good	37.858 \| good	0.391 \| good
2025-12-06T13:00:00.000Z	35 \| good	3.66 \| good	13.506 \| good	4.796 \| good	0.695 \| good	37.402 \| good	0.47 \| good
2025-12-06T14:00:00.000Z	41 \| good	3.679 \| good	14.049 \| good	6.348 \| good	0.77 \| good	42.705 \| good	0.52 \| good
2025-12-06T15:00:00.000Z	41 \| good	4.258 \| good	15.896 \| good	8.184 \| good	1.016 \| good	43.218 \| good	0.616 \| good
2025-12-06T16:00:00.000Z	37 \| good	6.458 \| good	24.702 \| good	11.358 \| good	1.371 \| good	38.72 \| good	0.702 \| good
2025-12-06T17:00:00.000Z	33 \| good	5.779 \| good	23.763 \| good	19.081 \| good	0.836 \| good	16.148 \| good	0.224 \| good
2025-12-06T18:00:00.000Z	22 \| good	4.145 \| good	18.902 \| good	23.824 \| good	0.509 \| good	6.912 \| good	0.272 \| good
2025-12-06T19:00:00.000Z	25 \| good	3.384 \| good	16.003 \| good	27.273 \| good	0.409 \| good	6.628 \| good	0.272 \| good
2025-12-06T20:00:00.000Z	30 \| good	2.542 \| good	13.936 \| good	32.448 \| good	0.308 \| good	6.297 \| good	0.221 \| good
2025-12-06T21:00:00.000Z	32 \| good	2.134 \| good	11.983 \| good	35.082 \| good	0.354 \| good	6.244 \| good	0.221 \| good
2025-12-06T22:00:00.000Z	34 \| good	1.791 \| good	10.492 \| good	36.724 \| good	0.299 \| good	5.936 \| good	0.244 \| good
2025-12-06T23:00:00.000Z	31 \| good	1.957 \| good	10.7 \| good	33.478 \| good	0.469 \| good	9.066 \| good	0.222 \| good
2025-12-07T00:00:00.000Z	31 \| good	2.347 \| good	11.9 \| good	33.633 \| good	0.255 \| good	14.543 \| good	0.227 \| good
2025-12-07T01:00:00.000Z	31 \| good	2.636 \| good	12.147 \| good	33.714 \| good	0.245 \| good	13.906 \| good	0.227 \| good
2025-12-07T02:00:00.000Z	30 \| good	2.886 \| good	12.606 \| good	32.071 \| good	0.254 \| good	15.107 \| good	0.224 \| good
2025-12-07T03:00:00.000Z	31 \| good	2.715 \| good	11.996 \| good	34.227 \| good	0.285 \| good	11.402 \| good	0.157 \| good
2025-12-07T04:00:00.000Z	31 \| good	2.62 \| good	11.299 \| good	33.869 \| good	0.19 \| good	6.644 \| good	0.167 \| good
2025-12-07T05:00:00.000Z	30 \| good	1.933 \| good	7.757 \| good	32.052 \| good	0.199 \| good	5.216 \| good	0.162 \| good
2025-12-07T06:00:00.000Z	32 \| good	1.55 \| good	6.501 \| good	34.52 \| good	0.245 \| good	5.628 \| good	0.16 \| good
2025-12-07T07:00:00.000Z	32 \| good	1.25 \| good	5.456 \| good	34.825 \| good	0.257 \| good	5.231 \| good	0.159 \| good
2025-12-07T08:00:00.000Z	33 \| good	1.071 \| good	4.76 \| good	35.705 \| good	0.206 \| good	4.721 \| good	0.156 \| good
2025-12-07T09:00:00.000Z	31 \| good	1.346 \| good	5.219 \| good	34.053 \| good	0.145 \| good	9.771 \| good	0.156 \| good
2025-12-07T10:00:00.000Z	30 \| good	1.947 \| good	7.033 \| good	32.206 \| good	0.241 \| good	15.494 \| good	0.154 \| good
2025-12-07T11:00:00.000Z	30 \| good	2.249 \| good	6.751 \| good	32.278 \| good	0.195 \| good	15.714 \| good	0.181 \| good
2025-12-07T12:00:00.000Z	29 \| good	1.875 \| good	5.843 \| good	31.187 \| good	0.1 \| good	12.653 \| good	0.128 \| good
2025-12-07T13:00:00.000Z	31 \| good	1.403 \| good	4.587 \| good	32.728 \| good	0.112 \| good	10.645 \| good	0.105 \| good
2025-12-07T14:00:00.000Z	30 \| good	1.269 \| good	4.577 \| good	32.187 \| good	0.185 \| good	11.962 \| good	0.131 \| good
2025-12-07T15:00:00.000Z	32 \| good	1.294 \| good	4.577 \| good	34.922 \| good	0.184 \| good	12.249 \| good	0.131 \| good
2025-12-07T16:00:00.000Z	35 \| good	1.34 \| good	5.374 \| good	38.135 \| good	0.225 \| good	7.679 \| good	0.131 \| good
2025-12-07T17:00:00.000Z	35 \| good	1.178 \| good	4.915 \| good	38.246 \| good	0.114 \| good	4.882 \| good	0.153 \| good
2025-12-07T18:00:00.000Z	35 \| good	1.129 \| good	4.494 \| good	38.164 \| good	0.121 \| good	4.424 \| good	0.151 \| good
2025-12-07T19:00:00.000Z	35 \| good	1.143 \| good	4.741 \| good	38.275 \| good	0.162 \| good	4.617 \| good	0.151 \| good
2025-12-07T20:00:00.000Z	37 \| good	1.103 \| good	4.494 \| good	39.99 \| good	0.111 \| good	3.69 \| good	0.176 \| good
2025-12-07T20:00:00.000Z	37 \| good	1.101 \| good	4.528 \| good	40.272 \| good	0.107 \| good	4.153 \| good	0.171 \| good
2025-12-07T21:00:00.000Z	35 \| good	2.412 \| good	10.003 \| good	37.709 \| good	0.657 \| good	2.342 \| good	0.124 \| good
2025-12-07T22:00:00.000Z	32 \| good	3.782 \| good	16.042 \| good	34.577 \| good	0.745 \| good	7.615 \| good	0.159 \| good
2025-12-07T23:00:00.000Z	31 \| good	4.718 \| good	20.977 \| good	33.44 \| good	0.832 \| good	12.888 \| good	0.193 \| good
2025-12-08T00:00:00.000Z	38 \| good	6.971 \| good	30.896 \| good	32.139 \| good	0.92 \| good	18.161 \| good	0.228 \| good
2025-12-08T01:00:00.000Z	52 \| moderate	10.314 \| good	45.829 \| good	25.985 \| good	0.857 \| good	18.335 \| good	0.228 \| good
2025-12-08T02:00:00.000Z	56 \| moderate	12.021 \| good	53.859 \| good	20.206 \| good	0.795 \| good	18.51 \| good	0.229 \| good
2025-12-08T03:00:00.000Z	49 \| good	9.07 \| good	40.917 \| good	22.143 \| good	0.732 \| good	18.684 \| good	0.23 \| good
2025-12-08T04:00:00.000Z	44 \| good	8.257 \| good	36 \| good	23.446 \| good	0.706 \| good	17.549 \| good	0.22 \| good
2025-12-08T05:00:00.000Z	44 \| good	7.552 \| good	32.984 \| good	23.253 \| good	0.679 \| good	16.414 \| good	0.21 \| good
2025-12-08T06:00:00.000Z	44 \| good	7.654 \| good	33.922 \| good	21.916 \| good	0.653 \| good	15.279 \| good	0.199 \| good
2025-12-08T07:00:00.000Z	49 \| good	8.569 \| good	36.976 \| good	14.032 \| good	0.591 \| good	13.838 \| good	0.19 \| good
2025-12-08T08:00:00.000Z	44 \| good	7.614 \| good	33.916 \| good	10.593 \| good	0.529 \| good	12.397 \| good	0.18 \| good
2025-12-08T09:00:00.000Z	38 \| good	7.055 \| good	30.947 \| good	7.973 \| good	0.466 \| good	10.956 \| good	0.17 \| good
2025-12-08T10:00:00.000Z	33 \| good	5.773 \| good	24.988 \| good	9.274 \| good	0.433 \| good	9.647 \| good	0.158 \| good
2025-12-08T11:00:00.000Z	27 \| good	5.265 \| good	22.958 \| good	8.402 \| good	0.4 \| good	8.338 \| good	0.147 \| good
2025-12-08T12:00:00.000Z	27 \| good	5.325 \| good	22.992 \| good	10.84 \| good	0.368 \| good	7.029 \| good	0.136 \| good
2025-12-08T13:00:00.000Z	38 \| good	6.763 \| good	29.958 \| good	12.136 \| good	0.45 \| good	8.684 \| good	0.153 \| good
2025-12-08T14:00:00.000Z	44 \| good	8.406 \| good	36.939 \| good	13.728 \| good	0.532 \| good	10.338 \| good	0.17 \| good
2025-12-08T15:00:00.000Z	44 \| good	8.381 \| good	36.958 \| good	19.734 \| good	0.614 \| good	11.993 \| good	0.186 \| good
2025-12-08T16:00:00.000Z	27 \| good	5.486 \| good	23.03 \| good	27.318 \| good	0.65 \| good	10.155 \| good	0.178 \| good
2025-12-08T17:00:00.000Z	33 \| good	3.192 \| good	13.968 \| good	36.337 \| good	0.685 \| good	8.317 \| good	0.17 \| good
2025-12-08T18:00:00.000Z	38 \| good	2.423 \| good	9.999 \| good	40.574 \| good	0.721 \| good	6.48 \| good	0.162 \| good
2025-12-08T19:00:00.000Z	37 \| good	1.735 \| good	7.034 \| good	39.84 \| good	0.686 \| good	5.162 \| good	0.145 \| good
2025-12-08T20:00:00.000Z	34 \| good	2.212 \| good	9.017 \| good	37.455 \| good	0.652 \| good	3.845 \| good	0.128 \| good
2025-12-08T21:00:00.000Z	32 \| good	1.724 \| good	7.019 \| good	35.273 \| good	0.617 \| good	2.527 \| good	0.111 \| good
2025-12-08T22:00:00.000Z	31 \| good	1.459 \| good	6.021 \| good	33.53 \| good	0.757 \| good	8.589 \| good	0.159 \| good
2025-12-08T23:00:00.000Z	33 \| good	1.446 \| good	6.043 \| good	35.58 \| good	0.897 \| good	14.65 \| good	0.206 \| good
2025-12-09T00:00:00.000Z	37 \| good	2.236 \| good	9.039 \| good	39.641 \| good	1.037 \| good	20.711 \| good	0.254 \| good
2025-12-09T01:00:00.000Z	34 \| good	4.532 \| good	19.949 \| good	37.106 \| good	0.971 \| good	21.415 \| good	0.252 \| good
2025-12-09T02:00:00.000Z	33 \| good	6.038 \| good	26.928 \| good	32.842 \| good	0.905 \| good	22.12 \| good	0.249 \| good
2025-12-09T03:00:00.000Z	27 \| good	5.063 \| good	21.964 \| good	26.711 \| good	0.839 \| good	22.824 \| good	0.246 \| good
2025-12-09T04:00:00.000Z	22 \| good	4.453 \| good	18.988 \| good	20.9 \| good	0.757 \| good	21.237 \| good	0.229 \| good
2025-12-09T05:00:00.000Z	27 \| good	5.369 \| good	22.969 \| good	19.453 \| good	0.676 \| good	19.65 \| good	0.212 \| good
2025-12-09T06:00:00.000Z	33 \| good	5.81 \| good	24.985 \| good	18.035 \| good	0.595 \| good	18.063 \| good	0.194 \| good
2025-12-09T07:00:00.000Z	33 \| good	5.94 \| good	26.908 \| good	18.025 \| good	0.528 \| good	15.182 \| good	0.178 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.903 \| good	20.988 \| good	16.62 \| good	0.461 \| good	12.302 \| good	0.161 \| good
2025-12-09T09:00:00.000Z	22 \| good	4.484 \| good	18.997 \| good	18.583 \| good	0.394 \| good	9.421 \| good	0.145 \| good
2025-12-09T10:00:00.000Z	22 \| good	4.438 \| good	18.961 \| good	16.739 \| good	0.388 \| good	8.159 \| good	0.137 \| good
2025-12-09T11:00:00.000Z	27 \| good	4.686 \| good	20.911 \| good	13.717 \| good	0.381 \| good	6.897 \| good	0.13 \| good
2025-12-09T12:00:00.000Z	33 \| good	5.677 \| good	23.979 \| good	7.167 \| good	0.374 \| good	5.634 \| good	0.122 \| good
2025-12-09T13:00:00.000Z	44 \| good	7.624 \| good	33.913 \| good	5.201 \| good	0.419 \| good	7.002 \| good	0.135 \| good
2025-12-09T14:00:00.000Z	52 \| moderate	10.054 \| good	44.875 \| good	5.252 \| good	0.463 \| good	8.369 \| good	0.148 \| good
2025-12-09T15:00:00.000Z	54 \| moderate	11.478 \| good	50.787 \| good	7.926 \| good	0.508 \| good	9.736 \| good	0.161 \| good
2025-12-09T16:00:00.000Z	54 \| moderate	11.031 \| good	48.713 \| good	12.503 \| good	0.535 \| good	8.557 \| good	0.157 \| good
2025-12-09T17:00:00.000Z	38 \| good	7.372 \| good	32.801 \| good	23.384 \| good	0.561 \| good	7.378 \| good	0.154 \| good
2025-12-09T18:00:00.000Z	33 \| good	5.818 \| good	24.88 \| good	23.508 \| good	0.587 \| good	6.199 \| good	0.151 \| good
2025-12-09T19:00:00.000Z	22 \| good	4.472 \| good	19.848 \| good	23.976 \| good	0.572 \| good	5.587 \| good	0.14 \| good
2025-12-09T20:00:00.000Z	24 \| good	3.567 \| good	15.913 \| good	25.592 \| good	0.557 \| good	4.975 \| good	0.129 \| good

Westminster

Empower business decisions with accurate air quality data

Westminster, Colorado air quality map: Real-time AQI near you

0.17ppm

How accurate is Colorado, USA air quality data?

Air quality measurements for Colorado, 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 Westminster, Colorado updated?

Air quality data for Westminster, Colorado is updated on an hourly basis.

When did Westminster, Colorado experience the worst air quality in the last 24 hours?

The worst air quality in Westminster, Colorado was recorded at 07:00:00 on 2025-12-07.

When did Westminster, Colorado have its best air quality in the last 24 hours?

The best air quality in Westminster, Colorado was recorded at 12:00:00 on 2025-12-07.

What is the real-time air quality index for Westminster, Colorado?

The real-time air quality index in Westminster, Colorado is 37, currently categorized as Good.

Which pollutant is found most often in Westminster, Colorado?

The most common pollutant in Westminster, Colorado is O3.

What can I do if the air quality in Westminster, Colorado is poor?

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

What are the current PM_2.5 levels in Westminster, Colorado?

The measured PM_2.5 levels in Westminster, Colorado at present are 1.101 μg/m³.

What are the current PM₁₀ levels at Westminster, Colorado?

The current PM₁₀ levels in Westminster, Colorado are 4.528 μg/m³.

What are the current carbon monoxide (CO) levels at Westminster, Colorado?

The current carbon monoxide (CO) level in Westminster, Colorado is 0.171 ppm.

What are the current sulfur dioxide (SO₂) levels at Westminster, Colorado?

The current sulfur dioxide (SO₂) levels in Westminster, Colorado are 0.107 ppb.

What are the current ozone (O₃) levels at Westminster, Colorado?

The current ozone (O₃) levels at Westminster, Colorado is 40.272 ppm.

What are the current nitrogen dioxide (NO₂) levels at Westminster, Colorado?

The current nitrogen dioxide (NO₂) levels at Westminster, Colorado is 4.153 ppb.

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