What are the current PM10 levels at Westminster, Colorado?

The current PM10 levels in Westminster, Colorado are 33.962 μg/m3.

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

The current sulfur dioxide (SO2) levels in Westminster, Colorado are 0.718 ppb.

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

The current ozone (O3) levels at Westminster, Colorado is 58.293 ppm.

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

The current nitrogen dioxide (NO2) levels at Westminster, Colorado is 11.273 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 7.623 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)

Moderate

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)

7.62 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

33.96 μg/m³

155

255

425

605+

Ozone (O₃)

58.29 ppb

201

201+

Sulfur Dioxide (SO₂)

0.72 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.27 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
2026-07-21T22:00:00.000Z	112 \| sensitive	14.339 \| fine	61.841 \| fine	74.059 \| moderate	0.535 \| good	4.255 \| good	0.197 \| good
2026-07-21T23:00:00.000Z	108 \| sensitive	11.617 \| good	53.473 \| good	72.757 \| moderate	0.421 \| good	3.705 \| good	0.197 \| good
2026-07-22T00:00:00.000Z	97 \| moderate	9.613 \| good	45.753 \| good	69.327 \| fine	0.405 \| good	4.322 \| good	0.199 \| good
2026-07-22T01:00:00.000Z	87 \| moderate	7.739 \| good	39.28 \| good	66.465 \| fine	0.581 \| good	4.998 \| good	0.198 \| good
2026-07-22T02:00:00.000Z	74 \| moderate	6.903 \| good	35.372 \| good	62.059 \| fine	0.351 \| good	7.326 \| good	0.245 \| good
2026-07-22T03:00:00.000Z	58 \| moderate	6.422 \| good	30.523 \| good	57.084 \| fine	0.438 \| good	11.901 \| good	0.245 \| good
2026-07-22T04:00:00.000Z	46 \| good	6.401 \| good	29.599 \| good	49.946 \| good	0.408 \| good	15.394 \| good	0.317 \| good
2026-07-22T05:00:00.000Z	49 \| good	6.759 \| good	34.561 \| good	53.494 \| good	0.532 \| good	8.918 \| good	0.245 \| good
2026-07-22T06:00:00.000Z	49 \| good	7.352 \| good	33.967 \| good	53.168 \| good	0.407 \| good	6.495 \| good	0.198 \| good
2026-07-22T07:00:00.000Z	47 \| good	6.394 \| good	26.105 \| good	50.921 \| good	0.408 \| good	5.31 \| good	0.196 \| good
2026-07-22T08:00:00.000Z	46 \| good	5.467 \| good	20.816 \| good	50.054 \| good	0.433 \| good	5.756 \| good	0.196 \| good
2026-07-22T09:00:00.000Z	46 \| good	5.528 \| good	19.846 \| good	50 \| good	0.281 \| good	6.637 \| good	0.196 \| good
2026-07-22T10:00:00.000Z	44 \| good	5.573 \| good	20.072 \| good	48.381 \| good	0.294 \| good	9.012 \| good	0.196 \| good
2026-07-22T11:00:00.000Z	43 \| good	5.916 \| good	22.779 \| good	46.272 \| good	0.421 \| good	10.99 \| good	0.22 \| good
2026-07-22T12:00:00.000Z	41 \| good	6.463 \| good	25.662 \| good	44.406 \| good	0.351 \| good	14 \| good	0.271 \| good
2026-07-22T13:00:00.000Z	41 \| good	7.103 \| good	32.085 \| good	43.975 \| good	0.367 \| good	18.818 \| good	0.271 \| good
2026-07-22T14:00:00.000Z	44 \| good	7.774 \| good	39.666 \| good	45.435 \| good	0.638 \| good	15.359 \| good	0.367 \| good
2026-07-22T15:00:00.000Z	44 \| good	8.361 \| good	40.674 \| good	48.272 \| good	1.187 \| good	16.901 \| good	0.367 \| good
2026-07-22T16:00:00.000Z	49 \| good	8.8 \| good	39.708 \| good	52.03 \| good	0.491 \| good	12.845 \| good	0.271 \| good
2026-07-22T17:00:00.000Z	51 \| moderate	9.138 \| good	40.014 \| good	55.46 \| fine	0.743 \| good	9.691 \| good	0.223 \| good
2026-07-22T18:00:00.000Z	71 \| moderate	9.625 \| good	44.327 \| good	61.327 \| fine	0.759 \| good	6.609 \| good	0.224 \| good
2026-07-22T19:00:00.000Z	87 \| moderate	10.152 \| good	48.485 \| good	65.921 \| fine	0.692 \| good	8.521 \| good	0.224 \| good
2026-07-22T20:00:00.000Z	97 \| moderate	9.976 \| good	47.172 \| good	68.896 \| fine	0.544 \| good	6.174 \| good	0.2 \| good
2026-07-22T21:00:00.000Z	105 \| sensitive	10.059 \| good	48.205 \| good	71.757 \| moderate	0.588 \| good	9.648 \| good	0.32 \| good
2026-07-22T22:00:00.000Z	108 \| sensitive	10.192 \| good	48.561 \| good	72.975 \| moderate	0.521 \| good	13.572 \| good	0.296 \| good
2026-07-22T23:00:00.000Z	93 \| moderate	9.694 \| good	51.017 \| good	68.49 \| fine	0.464 \| good	10.196 \| good	0.2 \| good
2026-07-23T00:00:00.000Z	84 \| moderate	9.027 \| good	48.715 \| good	64.594 \| fine	0.367 \| good	9.371 \| good	0.224 \| good
2026-07-23T01:00:00.000Z	64 \| moderate	9.624 \| good	44.836 \| good	59.268 \| fine	0.381 \| good	13.498 \| good	0.294 \| good
2026-07-23T02:00:00.000Z	49 \| good	8.91 \| good	36.354 \| good	53.079 \| good	0.41 \| good	17.753 \| good	0.294 \| good
2026-07-23T03:00:00.000Z	50 \| good	4.086 \| good	18.003 \| good	54.326 \| good	0.259 \| good	6.503 \| good	0.164 \| good
2026-07-23T04:00:00.000Z	42 \| good	6.948 \| good	25.144 \| good	44.589 \| good	0.394 \| good	19.27 \| good	0.27 \| good
2026-07-23T05:00:00.000Z	37 \| good	5.632 \| good	20.227 \| good	39.719 \| good	0.351 \| good	16.569 \| good	0.222 \| good
2026-07-23T06:00:00.000Z	37 \| good	4.704 \| good	16.666 \| good	40.02 \| good	0.307 \| good	12.291 \| good	0.198 \| good
2026-07-23T07:00:00.000Z	37 \| good	4.121 \| good	14.707 \| good	40.213 \| good	0.237 \| good	8.226 \| good	0.174 \| good
2026-07-23T08:00:00.000Z	34 \| good	4.138 \| good	14.277 \| good	37.129 \| good	0.264 \| good	9.391 \| good	0.198 \| good
2026-07-23T09:00:00.000Z	31 \| good	4.284 \| good	14.469 \| good	33.966 \| good	0.478 \| good	13.797 \| good	0.198 \| good
2026-07-23T10:00:00.000Z	28 \| good	4.563 \| good	15.436 \| good	30.233 \| good	0.485 \| good	17.251 \| good	0.198 \| good
2026-07-23T11:00:00.000Z	27 \| good	4.829 \| good	16.804 \| good	25.472 \| good	0.431 \| good	20.448 \| good	0.221 \| good
2026-07-23T12:00:00.000Z	27 \| good	5.398 \| good	20.537 \| good	22.091 \| good	0.391 \| good	24.771 \| good	0.271 \| good
2026-07-23T13:00:00.000Z	33 \| good	6.126 \| good	25.671 \| good	24.15 \| good	0.478 \| good	25.405 \| good	0.439 \| good
2026-07-23T14:00:00.000Z	38 \| good	6.822 \| good	28.856 \| good	25.556 \| good	0.478 \| good	21.598 \| good	0.439 \| good
2026-07-23T15:00:00.000Z	38 \| good	7.189 \| good	28.856 \| good	29.447 \| good	0.478 \| good	17.203 \| good	0.344 \| good
2026-07-23T16:00:00.000Z	44 \| good	7.604 \| good	30.127 \| good	34.58 \| good	0.661 \| good	13.993 \| good	0.319 \| good
2026-07-23T17:00:00.000Z	44 \| good	8.006 \| good	32.453 \| good	43.472 \| good	0.789 \| good	12.509 \| good	0.247 \| good
2026-07-23T18:00:00.000Z	45 \| good	8.142 \| good	33.503 \| good	49.263 \| good	0.732 \| good	10.059 \| good	0.319 \| good
2026-07-23T19:00:00.000Z	51 \| moderate	8.023 \| good	35.197 \| good	54.728 \| good	0.702 \| good	8.334 \| good	0.199 \| good
2026-07-23T20:00:00.000Z	61 \| moderate	7.623 \| good	33.962 \| good	58.293 \| fine	0.718 \| good	11.273 \| good	0.199 \| good
2026-07-23T21:00:00.000Z	71 \| moderate	7.321 \| good	34.234 \| good	60.59 \| fine	0.705 \| good	11.765 \| good	0.224 \| good
2026-07-23T21:00:00.000Z	61 \| moderate	7.623 \| good	33.962 \| good	58.293 \| fine	0.718 \| good	11.273 \| good	0.199 \| good
2026-07-23T22:00:00.000Z	54 \| moderate	7.465 \| good	32.711 \| good	55.656 \| fine	0.189 \| good	1.224 \| good	0.112 \| good
2026-07-23T23:00:00.000Z	54 \| moderate	6 \| good	26.338 \| good	55.672 \| fine	0.191 \| good	1.48 \| good	0.114 \| good
2026-07-24T00:00:00.000Z	50 \| good	4.778 \| good	20.911 \| good	53.876 \| good	0.191 \| good	1.675 \| good	0.116 \| good
2026-07-24T01:00:00.000Z	64 \| moderate	5.553 \| good	23.844 \| good	59.241 \| fine	0.194 \| good	1.997 \| good	0.117 \| good
2026-07-24T02:00:00.000Z	49 \| good	4.821 \| good	21.269 \| good	53.082 \| good	0.206 \| good	3.897 \| good	0.131 \| good
2026-07-24T03:00:00.000Z	47 \| good	4.739 \| good	20.612 \| good	51.168 \| good	0.237 \| good	7.991 \| good	0.16 \| good
2026-07-24T04:00:00.000Z	44 \| good	6.704 \| good	29.888 \| good	48.008 \| good	0.26 \| good	10.517 \| good	0.179 \| good
2026-07-24T05:00:00.000Z	42 \| good	7.331 \| good	32.513 \| good	44.786 \| good	0.264 \| good	12.485 \| good	0.194 \| good
2026-07-24T06:00:00.000Z	36 \| good	6.049 \| good	26.849 \| good	39.315 \| good	0.245 \| good	12.646 \| good	0.197 \| good
2026-07-24T07:00:00.000Z	35 \| good	5.399 \| good	23.546 \| good	37.875 \| good	0.217 \| good	10.994 \| good	0.187 \| good
2026-07-24T08:00:00.000Z	33 \| good	3.777 \| good	16.46 \| good	36.037 \| good	0.195 \| good	9.966 \| good	0.179 \| good
2026-07-24T09:00:00.000Z	34 \| good	3.105 \| good	13.167 \| good	36.93 \| good	0.17 \| good	9.013 \| good	0.172 \| good
2026-07-24T10:00:00.000Z	37 \| good	4.233 \| good	18.284 \| good	39.599 \| good	0.148 \| good	8.208 \| good	0.165 \| good
2026-07-24T11:00:00.000Z	32 \| good	5.488 \| good	23.472 \| good	34.803 \| good	0.127 \| good	7.644 \| good	0.16 \| good
2026-07-24T12:00:00.000Z	33 \| good	6.445 \| good	28.74 \| good	27.592 \| good	0.108 \| good	6.756 \| good	0.156 \| good
2026-07-24T13:00:00.000Z	38 \| good	6.946 \| good	30.446 \| good	28.611 \| good	0.099 \| good	5.089 \| good	0.152 \| good
2026-07-24T14:00:00.000Z	36 \| good	6.33 \| good	28.181 \| good	38.956 \| good	0.116 \| good	4.184 \| good	0.151 \| good
2026-07-24T15:00:00.000Z	45 \| good	6.338 \| good	28.338 \| good	49.165 \| good	0.156 \| good	3.003 \| good	0.136 \| good
2026-07-24T16:00:00.000Z	64 \| moderate	6.813 \| good	29.941 \| good	58.756 \| fine	0.241 \| good	1.617 \| good	0.124 \| good
2026-07-24T17:00:00.000Z	77 \| moderate	6.883 \| good	30.338 \| good	63.163 \| fine	0.231 \| good	0.838 \| good	0.119 \| good
2026-07-24T18:00:00.000Z	80 \| moderate	6.019 \| good	26.857 \| good	64.292 \| fine	0.214 \| good	0.569 \| good	0.12 \| good
2026-07-24T19:00:00.000Z	84 \| moderate	5.825 \| good	25.475 \| good	64.533 \| fine	0.201 \| good	0.48 \| good	0.121 \| good
2026-07-24T20:00:00.000Z	87 \| moderate	6.231 \| good	27.688 \| good	66.156 \| fine	0.192 \| good	0.455 \| good	0.12 \| good
2026-07-24T21:00:00.000Z	87 \| moderate	5.791 \| good	25.021 \| good	65.659 \| fine	0.187 \| good	0.482 \| good	0.12 \| good
2026-07-24T22:00:00.000Z	84 \| moderate	5.325 \| good	23.179 \| good	65.233 \| fine	0.187 \| good	0.58 \| good	0.12 \| good
2026-07-24T23:00:00.000Z	97 \| moderate	4.408 \| good	19.403 \| good	68.558 \| fine	0.191 \| good	0.844 \| good	0.121 \| good
2026-07-25T00:00:00.000Z	90 \| moderate	4.327 \| good	18.854 \| good	67.167 \| fine	0.197 \| good	1.49 \| good	0.127 \| good
2026-07-25T01:00:00.000Z	77 \| moderate	4.627 \| good	20.161 \| good	62.842 \| fine	0.215 \| good	1.895 \| good	0.13 \| good
2026-07-25T02:00:00.000Z	67 \| moderate	5.492 \| good	23.404 \| good	60.092 \| fine	0.208 \| good	3.348 \| good	0.14 \| good
2026-07-25T03:00:00.000Z	49 \| good	4.016 \| good	17.401 \| good	52.803 \| good	0.215 \| good	5.314 \| good	0.153 \| good
2026-07-25T04:00:00.000Z	45 \| good	4.543 \| good	19.654 \| good	48.899 \| good	0.219 \| good	6.532 \| good	0.161 \| good
2026-07-25T05:00:00.000Z	44 \| good	4.38 \| good	19.402 \| good	47.561 \| good	0.213 \| good	7.379 \| good	0.167 \| good
2026-07-25T06:00:00.000Z	50 \| good	3.997 \| good	17.473 \| good	53.548 \| good	0.201 \| good	7.999 \| good	0.173 \| good
2026-07-25T07:00:00.000Z	51 \| moderate	4.642 \| good	19.81 \| good	55.191 \| fine	0.185 \| good	8.08 \| good	0.175 \| good
2026-07-25T08:00:00.000Z	46 \| good	5.039 \| good	21.611 \| good	50.133 \| good	0.169 \| good	7.998 \| good	0.175 \| good
2026-07-25T09:00:00.000Z	43 \| good	4.891 \| good	21.137 \| good	45.642 \| good	0.154 \| good	7.883 \| good	0.174 \| good
2026-07-25T10:00:00.000Z	39 \| good	5.587 \| good	24.107 \| good	42.256 \| good	0.146 \| good	7.722 \| good	0.172 \| good
2026-07-25T11:00:00.000Z	44 \| good	7.768 \| good	34.215 \| good	41.238 \| good	0.142 \| good	7.522 \| good	0.169 \| good
2026-07-25T12:00:00.000Z	38 \| good	7.287 \| good	32.067 \| good	34.174 \| good	0.137 \| good	6.975 \| good	0.167 \| good
2026-07-25T13:00:00.000Z	44 \| good	8.324 \| good	36.592 \| good	34.99 \| good	0.129 \| good	5.391 \| good	0.163 \| good
2026-07-25T14:00:00.000Z	44 \| good	8.106 \| good	35.575 \| good	45.922 \| good	0.146 \| good	4.411 \| good	0.163 \| good
2026-07-25T15:00:00.000Z	67 \| moderate	7.765 \| good	34.077 \| good	60.284 \| fine	0.174 \| good	2.542 \| good	0.142 \| good
2026-07-25T16:00:00.000Z	100 \| moderate	7.045 \| good	30.986 \| good	69.662 \| fine	0.229 \| good	1.56 \| good	0.131 \| good
2026-07-25T17:00:00.000Z	105 \| sensitive	7.266 \| good	32.215 \| good	71.978 \| moderate	0.252 \| good	0.94 \| good	0.125 \| good
2026-07-25T18:00:00.000Z	119 \| sensitive	6.973 \| good	30.912 \| good	75.578 \| moderate	0.219 \| good	0.618 \| good	0.121 \| good
2026-07-25T19:00:00.000Z	122 \| sensitive	6.672 \| good	29.775 \| good	77.36 \| moderate	0.185 \| good	0.487 \| good	0.118 \| good
2026-07-25T20:00:00.000Z	119 \| sensitive	7.675 \| good	33.881 \| good	76.344 \| moderate	0.16 \| good	0.467 \| good	0.115 \| good
2026-07-25T21:00:00.000Z	87 \| moderate	8.369 \| good	36.881 \| good	65.783 \| fine	0.145 \| good	0.56 \| good	0.113 \| good

Westminster

Empower business decisions with accurate air quality data

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

0.20ppm

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 10:00:00 on 2026-07-22.

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 2026-07-23.

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

The real-time air quality index in Westminster, Colorado is 61, currently categorized as Moderate.

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 7.623 μg/m³.

What are the current PM₁₀ levels at Westminster, Colorado?

The current PM₁₀ levels in Westminster, Colorado are 33.962 μg/m³.

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

The current carbon monoxide (CO) level in Westminster, Colorado is 0.199 ppm.

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

The current sulfur dioxide (SO₂) levels in Westminster, Colorado are 0.718 ppb.

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

The current ozone (O₃) levels at Westminster, Colorado is 58.293 ppm.

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

The current nitrogen dioxide (NO₂) levels at Westminster, Colorado is 11.273 ppb.

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