What are the current PM10 levels at Westminster, Colorado?

The current PM10 levels in Westminster, Colorado are 12.205 μg/m3.

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

The current sulfur dioxide (SO2) levels in Westminster, Colorado are 0.214 ppb.

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

The current ozone (O3) levels at Westminster, Colorado is 31.882 ppm.

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

The current nitrogen dioxide (NO2) levels at Westminster, Colorado is 10.14 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 4.28 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)

4.28 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

12.21 μg/m³

155

255

425

605+

Ozone (O₃)

31.88 ppb

201

201+

Sulfur Dioxide (SO₂)

0.21 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

10.14 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 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
2026-03-14T10:00:00.000Z	21 \| good	2.155 \| good	9.9 \| good	23.188 \| good	0.511 \| good	15.273 \| good	0.191 \| good
2026-03-14T11:00:00.000Z	21 \| good	2.057 \| good	10.486 \| good	22.669 \| good	0.581 \| good	11.93 \| good	0.1 \| good
2026-03-14T12:00:00.000Z	24 \| good	2.002 \| good	18.243 \| good	26.179 \| good	0.368 \| good	10.278 \| good	0.1 \| good
2026-03-14T13:00:00.000Z	23 \| good	1.946 \| good	14.95 \| good	25.426 \| good	0.676 \| good	18.852 \| good	0.194 \| good
2026-03-14T14:00:00.000Z	22 \| good	2.587 \| good	20.243 \| good	23.673 \| good	1.003 \| good	20.62 \| good	0.198 \| good
2026-03-14T15:00:00.000Z	26 \| good	2.799 \| good	20.047 \| good	28.435 \| good	1.262 \| good	13.287 \| good	0.106 \| good
2026-03-14T16:00:00.000Z	28 \| good	3.663 \| good	23.436 \| good	30 \| good	0.836 \| good	8.425 \| good	0.106 \| good
2026-03-14T17:00:00.000Z	32 \| good	3.462 \| good	19.143 \| good	34.975 \| good	0.746 \| good	5.813 \| good	0.103 \| good
2026-03-14T18:00:00.000Z	33 \| good	2.755 \| good	14.344 \| good	36.406 \| good	0.471 \| good	5.54 \| good	0.103 \| good
2026-03-14T19:00:00.000Z	35 \| good	2.402 \| good	12.934 \| good	37.846 \| good	0.425 \| good	4.897 \| good	0.101 \| good
2026-03-14T20:00:00.000Z	37 \| good	2.173 \| good	14.469 \| good	39.98 \| good	0.484 \| good	3.299 \| good	0.101 \| good
2026-03-14T21:00:00.000Z	36 \| good	2.032 \| good	17.167 \| good	38.812 \| good	0.425 \| good	3.466 \| good	0.1 \| good
2026-03-14T22:00:00.000Z	38 \| good	1.732 \| good	14.251 \| good	40.841 \| good	0.484 \| good	3.461 \| good	0.1 \| good
2026-03-14T23:00:00.000Z	38 \| good	1.996 \| good	21.991 \| good	41.163 \| good	0.551 \| good	3.293 \| good	0.1 \| good
2026-03-15T00:00:00.000Z	38 \| good	1.857 \| good	20.234 \| good	40.871 \| good	0.574 \| good	3.479 \| good	0.1 \| good
2026-03-15T01:00:00.000Z	37 \| good	1.911 \| good	15.887 \| good	40.41 \| good	0.468 \| good	3.537 \| good	0.1 \| good
2026-03-15T02:00:00.000Z	36 \| good	2.204 \| good	17.476 \| good	39.113 \| good	0.484 \| good	4.383 \| good	0.1 \| good
2026-03-15T03:00:00.000Z	33 \| good	1.901 \| good	13.347 \| good	36.134 \| good	0.454 \| good	4.61 \| good	0.1 \| good
2026-03-15T04:00:00.000Z	31 \| good	2.21 \| good	13.41 \| good	34 \| good	0.525 \| good	8.787 \| good	0.191 \| good
2026-03-15T05:00:00.000Z	33 \| good	4.138 \| good	30.195 \| good	36.44 \| good	0.498 \| good	4.325 \| good	0.1 \| good
2026-03-15T06:00:00.000Z	33 \| good	4.566 \| good	33.542 \| good	36.277 \| good	0.425 \| good	3.797 \| good	0.1 \| good
2026-03-15T07:00:00.000Z	34 \| good	3.694 \| good	25.48 \| good	37.005 \| good	0.411 \| good	3.157 \| good	0.1 \| good
2026-03-15T08:00:00.000Z	34 \| good	3.961 \| good	34.329 \| good	36.594 \| good	0.425 \| good	2.133 \| good	0.1 \| good
2026-03-15T09:00:00.000Z	36 \| good	2.587 \| good	19.782 \| good	39.327 \| good	0.411 \| good	2.541 \| good	0.1 \| good
2026-03-15T10:00:00.000Z	38 \| good	1.944 \| good	13.297 \| good	41.084 \| good	0.428 \| good	2.863 \| good	0.1 \| good
2026-03-15T11:00:00.000Z	37 \| good	1.544 \| good	9.373 \| good	40.327 \| good	0.357 \| good	4.071 \| good	0.1 \| good
2026-03-15T12:00:00.000Z	41 \| good	1.275 \| good	8.084 \| good	43.787 \| good	0.43 \| good	3.063 \| good	0.1 \| good
2026-03-15T13:00:00.000Z	40 \| good	1.482 \| good	9.268 \| good	42.683 \| good	0.357 \| good	2.826 \| good	0.1 \| good
2026-03-15T14:00:00.000Z	36 \| good	2.044 \| good	9.494 \| good	39.302 \| good	0.451 \| good	5.139 \| good	0.101 \| good
2026-03-15T15:00:00.000Z	34 \| good	3.015 \| good	12.079 \| good	36.757 \| good	0.38 \| good	5.214 \| good	0.1 \| good
2026-03-15T16:00:00.000Z	31 \| good	3.583 \| good	15.213 \| good	34.213 \| good	0.38 \| good	5.511 \| good	0.1 \| good
2026-03-15T17:00:00.000Z	31 \| good	3.75 \| good	16.388 \| good	32.782 \| good	0.254 \| good	4.546 \| good	0.192 \| good
2026-03-15T18:00:00.000Z	31 \| good	3.62 \| good	15.652 \| good	32.594 \| good	0.479 \| good	4.024 \| good	0.192 \| good
2026-03-15T19:00:00.000Z	32 \| good	3.366 \| good	15.217 \| good	34.732 \| good	0.341 \| good	3.675 \| good	0.192 \| good
2026-03-15T20:00:00.000Z	32 \| good	3.593 \| good	16.573 \| good	35.352 \| good	0.298 \| good	5.132 \| good	0.192 \| good
2026-03-15T21:00:00.000Z	35 \| good	3.938 \| good	17.134 \| good	38.247 \| good	0.354 \| good	6.274 \| good	0.192 \| good
2026-03-15T22:00:00.000Z	35 \| good	3.88 \| good	16.143 \| good	37.921 \| good	0.298 \| good	5.752 \| good	0.191 \| good
2026-03-15T23:00:00.000Z	37 \| good	3.403 \| good	13.992 \| good	40.193 \| good	0.355 \| good	2.72 \| good	0.192 \| good
2026-03-16T00:00:00.000Z	34 \| good	3.384 \| good	14.159 \| good	37.025 \| good	0.271 \| good	4.573 \| good	0.192 \| good
2026-03-16T01:00:00.000Z	36 \| good	3.365 \| good	14.05 \| good	39.163 \| good	0.312 \| good	5.215 \| good	0.192 \| good
2026-03-16T02:00:00.000Z	35 \| good	3.664 \| good	14.447 \| good	37.728 \| good	0.281 \| good	6.071 \| good	0.192 \| good
2026-03-16T03:00:00.000Z	35 \| good	3.61 \| good	12.535 \| good	38 \| good	0.256 \| good	6.958 \| good	0.192 \| good
2026-03-16T04:00:00.000Z	34 \| good	3.679 \| good	12.025 \| good	36.753 \| good	0.257 \| good	6.498 \| good	0.191 \| good
2026-03-16T05:00:00.000Z	33 \| good	3.837 \| good	11.544 \| good	36.163 \| good	0.281 \| good	7.791 \| good	0.191 \| good
2026-03-16T06:00:00.000Z	31 \| good	3.98 \| good	11.544 \| good	33.728 \| good	0.262 \| good	8.185 \| good	0.192 \| good
2026-03-16T07:00:00.000Z	31 \| good	4.176 \| good	12.072 \| good	33.272 \| good	0.227 \| good	7.016 \| good	0.104 \| good
2026-03-16T08:00:00.000Z	30 \| good	4.28 \| good	12.205 \| good	31.882 \| good	0.214 \| good	10.14 \| good	0.196 \| good
2026-03-16T09:00:00.000Z	30 \| good	4.28 \| good	12.205 \| good	31.882 \| good	0.214 \| good	10.14 \| good	0.196 \| good
2026-03-16T10:00:00.000Z	35 \| good	3.982 \| good	17.52 \| good	37.517 \| good	0.424 \| good	5.142 \| good	0.158 \| good
2026-03-16T11:00:00.000Z	36 \| good	4.139 \| good	17.994 \| good	39.262 \| good	0.434 \| good	4.534 \| good	0.152 \| good
2026-03-16T12:00:00.000Z	33 \| good	4.376 \| good	18.931 \| good	36.374 \| good	0.444 \| good	3.926 \| good	0.146 \| good
2026-03-16T13:00:00.000Z	33 \| good	5.107 \| good	22.051 \| good	35.673 \| good	0.511 \| good	4.162 \| good	0.149 \| good
2026-03-16T14:00:00.000Z	34 \| good	5.211 \| good	22.504 \| good	36.954 \| good	0.578 \| good	4.398 \| good	0.153 \| good
2026-03-16T15:00:00.000Z	38 \| good	6.621 \| good	29.764 \| good	37.22 \| good	0.646 \| good	4.634 \| good	0.156 \| good
2026-03-16T16:00:00.000Z	36 \| good	6.41 \| good	28.319 \| good	38.967 \| good	0.667 \| good	3.908 \| good	0.15 \| good
2026-03-16T17:00:00.000Z	37 \| good	5.479 \| good	23.816 \| good	40.155 \| good	0.689 \| good	3.183 \| good	0.144 \| good
2026-03-16T18:00:00.000Z	38 \| good	4.187 \| good	18.375 \| good	41.425 \| good	0.71 \| good	2.458 \| good	0.137 \| good
2026-03-16T19:00:00.000Z	39 \| good	5.435 \| good	23.652 \| good	42.332 \| good	0.668 \| good	2.32 \| good	0.135 \| good
2026-03-16T20:00:00.000Z	41 \| good	4.662 \| good	20.355 \| good	44.337 \| good	0.627 \| good	2.182 \| good	0.132 \| good
2026-03-16T21:00:00.000Z	44 \| good	3.397 \| good	14.207 \| good	47.023 \| good	0.585 \| good	2.044 \| good	0.129 \| good
2026-03-16T22:00:00.000Z	44 \| good	2.774 \| good	11.255 \| good	48.378 \| good	0.599 \| good	2.524 \| good	0.131 \| good
2026-03-16T23:00:00.000Z	44 \| good	2.499 \| good	10.492 \| good	46.693 \| good	0.613 \| good	3.004 \| good	0.132 \| good
2026-03-17T00:00:00.000Z	41 \| good	0.795 \| good	3.089 \| good	44.378 \| good	0.627 \| good	3.484 \| good	0.133 \| good
2026-03-17T01:00:00.000Z	40 \| good	2.188 \| good	9.087 \| good	43.136 \| good	0.694 \| good	7.466 \| good	0.16 \| good
2026-03-17T02:00:00.000Z	34 \| good	3.49 \| good	15.34 \| good	36.725 \| good	0.761 \| good	11.448 \| good	0.187 \| good
2026-03-17T03:00:00.000Z	31 \| good	4.343 \| good	18.519 \| good	33.617 \| good	0.828 \| good	15.43 \| good	0.214 \| good
2026-03-17T04:00:00.000Z	27 \| good	5.065 \| good	21.892 \| good	28.344 \| good	0.77 \| good	14.914 \| good	0.207 \| good
2026-03-17T05:00:00.000Z	27 \| good	4.854 \| good	21.159 \| good	28.022 \| good	0.712 \| good	14.399 \| good	0.2 \| good
2026-03-17T06:00:00.000Z	28 \| good	3.72 \| good	15.845 \| good	29.694 \| good	0.654 \| good	13.883 \| good	0.193 \| good
2026-03-17T07:00:00.000Z	27 \| good	3.267 \| good	13.414 \| good	28.751 \| good	0.579 \| good	12.527 \| good	0.183 \| good
2026-03-17T08:00:00.000Z	24 \| good	2.924 \| good	12.215 \| good	25.567 \| good	0.505 \| good	11.172 \| good	0.173 \| good
2026-03-17T09:00:00.000Z	24 \| good	2.758 \| good	11.477 \| good	26.079 \| good	0.43 \| good	9.816 \| good	0.163 \| good
2026-03-17T10:00:00.000Z	25 \| good	2.406 \| good	9.981 \| good	26.975 \| good	0.4 \| good	9.098 \| good	0.156 \| good
2026-03-17T11:00:00.000Z	27 \| good	2.497 \| good	10.476 \| good	28.618 \| good	0.37 \| good	8.379 \| good	0.149 \| good
2026-03-17T12:00:00.000Z	25 \| good	2.57 \| good	10.568 \| good	27.116 \| good	0.34 \| good	7.661 \| good	0.142 \| good
2026-03-17T13:00:00.000Z	27 \| good	3.34 \| good	14.537 \| good	29.031 \| good	0.374 \| good	7.213 \| good	0.148 \| good
2026-03-17T14:00:00.000Z	30 \| good	2.624 \| good	11.023 \| good	32.492 \| good	0.408 \| good	6.766 \| good	0.154 \| good
2026-03-17T15:00:00.000Z	32 \| good	2.723 \| good	11.411 \| good	35.158 \| good	0.442 \| good	6.318 \| good	0.16 \| good
2026-03-17T16:00:00.000Z	36 \| good	1.579 \| good	6.55 \| good	39.163 \| good	0.388 \| good	4.542 \| good	0.142 \| good
2026-03-17T17:00:00.000Z	38 \| good	2.347 \| good	9.521 \| good	40.608 \| good	0.333 \| good	2.766 \| good	0.124 \| good
2026-03-17T18:00:00.000Z	39 \| good	2.454 \| good	10 \| good	41.711 \| good	0.278 \| good	0.99 \| good	0.106 \| good
2026-03-17T19:00:00.000Z	40 \| good	2.395 \| good	10 \| good	43.126 \| good	0.263 \| good	0.833 \| good	0.105 \| good
2026-03-17T20:00:00.000Z	42 \| good	2.613 \| good	10.488 \| good	44.992 \| good	0.248 \| good	0.675 \| good	0.104 \| good
2026-03-17T21:00:00.000Z	43 \| good	2.512 \| good	10.13 \| good	45.617 \| good	0.233 \| good	0.517 \| good	0.103 \| good
2026-03-17T22:00:00.000Z	41 \| good	2.791 \| good	11.223 \| good	44.26 \| good	0.239 \| good	0.713 \| good	0.105 \| good
2026-03-17T23:00:00.000Z	41 \| good	2.322 \| good	9.462 \| good	43.818 \| good	0.245 \| good	0.908 \| good	0.107 \| good
2026-03-18T00:00:00.000Z	42 \| good	0.506 \| good	1.974 \| good	44.682 \| good	0.25 \| good	1.104 \| good	0.108 \| good
2026-03-18T01:00:00.000Z	44 \| good	0.801 \| good	2.888 \| good	46.703 \| good	0.356 \| good	4.315 \| good	0.129 \| good
2026-03-18T02:00:00.000Z	41 \| good	0.679 \| good	2.551 \| good	44.175 \| good	0.461 \| good	7.526 \| good	0.15 \| good
2026-03-18T03:00:00.000Z	37 \| good	0.45 \| good	1.62 \| good	39.892 \| good	0.566 \| good	10.736 \| good	0.17 \| good
2026-03-18T04:00:00.000Z	31 \| good	0.438 \| good	1.572 \| good	34.484 \| good	0.595 \| good	12.883 \| good	0.185 \| good
2026-03-18T05:00:00.000Z	31 \| good	0.828 \| good	3.264 \| good	33.995 \| good	0.625 \| good	15.029 \| good	0.2 \| good
2026-03-18T06:00:00.000Z	44 \| good	7.941 \| good	10.56 \| good	27.224 \| good	0.66 \| good	17.379 \| good	0.216 \| good
2026-03-18T07:00:00.000Z	29 \| good	2.837 \| good	11.688 \| good	30.676 \| good	0.557 \| good	14.11 \| good	0.194 \| good
2026-03-18T08:00:00.000Z	27 \| good	2.905 \| good	12.496 \| good	28.59 \| good	0.459 \| good	11.043 \| good	0.173 \| good
2026-03-18T09:00:00.000Z	27 \| good	3.043 \| good	12.83 \| good	29.189 \| good	0.361 \| good	7.977 \| good	0.152 \| good

Westminster

Empower business decisions with accurate air quality data

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

0.19ppm

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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Check live rankings of places in the USA affected by air pollution.

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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 12:00:00 on 2026-03-15.

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

The best air quality in Westminster, Colorado was recorded at 08:00:00 on 2026-03-16.

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

The real-time air quality index in Westminster, Colorado is 30, 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 4.28 μg/m³.

What are the current PM₁₀ levels at Westminster, Colorado?

The current PM₁₀ levels in Westminster, Colorado are 12.205 μg/m³.

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

The current carbon monoxide (CO) level in Westminster, Colorado is 0.196 ppm.

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

The current sulfur dioxide (SO₂) levels in Westminster, Colorado are 0.214 ppb.

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

The current ozone (O₃) levels at Westminster, Colorado is 31.882 ppm.

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

The current nitrogen dioxide (NO₂) levels at Westminster, Colorado is 10.14 ppb.

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