What is the PM10 level in Boulder, Colorado at the moment?

The PM10 concentration in Boulder, Colorado is 28.932 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Boulder, Colorado at the moment?

Currently, Boulder, Colorado has a sulfur dioxide (SO2) concentration of 0.477 ppb.

What is the ozone (O3) level in Boulder, Colorado at the moment?

The current ozone (O3) level in Boulder, Colorado at the moment is 40.266 ppm.

What is the nitrogen dioxide (NO2) level in Boulder, Colorado at the moment?

Nitrogen dioxide (NO2) level in Boulder, Colorado at the moment is 9.248 ppb.

Live air quality index in Boulder, Colorado today

Q: What is the PM2.5 level in Boulder, Colorado at the moment?

PM2.5 levels in Boulder, Colorado are currently 2.001 μg/m3.

Stay updated with real-time air quality in Boulder, 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

Boulder, Colorado

Last updated: ... (Local time)

Major air pollutants in Boulder, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

2.00 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

28.93 μg/m³

155

255

425

605+

Ozone (O₃)

40.27 ppb

201

201+

Sulfur Dioxide (SO₂)

0.48 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

9.25 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.17 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Boulder, Colorado

Scroll To Air Quality Map

Track live Boulder, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-07T21:00:00.000Z	36 \| good	0.907 \| good	8.028 \| good	39.126 \| good	0.533 \| good	8.439 \| good	0.218 \| good
2026-03-07T22:00:00.000Z	41 \| good	0.907 \| good	8.017 \| good	44.139 \| good	0.476 \| good	7.384 \| good	0.218 \| good
2026-03-07T23:00:00.000Z	41 \| good	0.803 \| good	7.003 \| good	43.776 \| good	0.499 \| good	4.985 \| good	0.249 \| good
2026-03-08T00:00:00.000Z	42 \| good	0.903 \| good	7.006 \| good	44.955 \| good	0.378 \| good	4.906 \| good	0.249 \| good
2026-03-08T01:00:00.000Z	40 \| good	1.003 \| good	7.02 \| good	43.055 \| good	0.564 \| good	6.679 \| good	0.249 \| good
2026-03-08T02:00:00.000Z	41 \| good	1.302 \| good	8.038 \| good	43.684 \| good	0.425 \| good	9.078 \| good	0.369 \| good
2026-03-08T03:00:00.000Z	44 \| good	1.993 \| good	8.205 \| good	47.168 \| good	0.466 \| good	9.875 \| good	0.185 \| good
2026-03-08T04:00:00.000Z	39 \| good	2.702 \| good	12.998 \| good	42.156 \| good	0.451 \| good	17.675 \| good	0.469 \| good
2026-03-08T05:00:00.000Z	40 \| good	2.214 \| good	10.029 \| good	42.969 \| good	0.621 \| good	11.531 \| good	0.479 \| good
2026-03-08T06:00:00.000Z	40 \| good	2.021 \| good	11.027 \| good	43.15 \| good	0.583 \| good	11.724 \| good	0.387 \| good
2026-03-08T07:00:00.000Z	41 \| good	1.726 \| good	8.043 \| good	44.171 \| good	0.666 \| good	13.509 \| good	0.454 \| good
2026-03-08T08:00:00.000Z	37 \| good	1.613 \| good	8.035 \| good	40.415 \| good	0.901 \| good	13.491 \| good	0.47 \| good
2026-03-08T09:00:00.000Z	38 \| good	1.109 \| good	6.031 \| good	41.155 \| good	0.85 \| good	13.667 \| good	0.454 \| good
2026-03-08T10:00:00.000Z	39 \| good	0.917 \| good	4.047 \| good	41.818 \| good	0.898 \| good	21.334 \| good	0.379 \| good
2026-03-08T11:00:00.000Z	37 \| good	0.813 \| good	3.038 \| good	40.402 \| good	0.906 \| good	24.601 \| good	0.285 \| good
2026-03-08T12:00:00.000Z	38 \| good	0.705 \| good	3.016 \| good	41.202 \| good	0.722 \| good	19.687 \| good	0.268 \| good
2026-03-08T13:00:00.000Z	37 \| good	0.605 \| good	2.024 \| good	40.357 \| good	0.764 \| good	14.564 \| good	0.268 \| good
2026-03-08T14:00:00.000Z	36 \| good	0.611 \| good	3.027 \| good	39.483 \| good	0.569 \| good	17.589 \| good	0.269 \| good
2026-03-08T15:00:00.000Z	38 \| good	0.809 \| good	4.029 \| good	40.62 \| good	0.662 \| good	15.931 \| good	0.252 \| good
2026-03-08T16:00:00.000Z	34 \| good	0.807 \| good	4.024 \| good	36.946 \| good	0.906 \| good	12.007 \| good	0.192 \| good
2026-03-08T17:00:00.000Z	31 \| good	1.003 \| good	5.01 \| good	34.466 \| good	0.761 \| good	8.411 \| good	0.192 \| good
2026-03-08T18:00:00.000Z	33 \| good	1.006 \| good	5.023 \| good	35.955 \| good	0.994 \| good	5.921 \| good	0.22 \| good
2026-03-08T19:00:00.000Z	35 \| good	0.706 \| good	4.021 \| good	37.962 \| good	0.783 \| good	5.818 \| good	0.249 \| good
2026-03-08T20:00:00.000Z	37 \| good	0.605 \| good	5.013 \| good	40.238 \| good	0.713 \| good	7.198 \| good	0.22 \| good
2026-03-08T21:00:00.000Z	39 \| good	0.604 \| good	6.002 \| good	42.151 \| good	0.689 \| good	5.251 \| good	0.226 \| good
2026-03-08T22:00:00.000Z	41 \| good	0.505 \| good	5.004 \| good	43.75 \| good	0.525 \| good	5.89 \| good	0.232 \| good
2026-03-08T23:00:00.000Z	38 \| good	0.503 \| good	6 \| good	41.485 \| good	0.502 \| good	3.859 \| good	0.217 \| good
2026-03-09T00:00:00.000Z	40 \| good	0.802 \| good	5.998 \| good	43.41 \| good	0.534 \| good	3.64 \| good	0.245 \| good
2026-03-09T01:00:00.000Z	40 \| good	0.903 \| good	5.007 \| good	42.731 \| good	0.575 \| good	4.151 \| good	0.26 \| good
2026-03-09T02:00:00.000Z	40 \| good	1.003 \| good	7.006 \| good	42.518 \| good	0.508 \| good	3.177 \| good	0.249 \| good
2026-03-09T03:00:00.000Z	44 \| good	0.973 \| good	3.936 \| good	47.115 \| good	0.622 \| good	15.863 \| good	0.239 \| good
2026-03-09T04:00:00.000Z	37 \| good	0.703 \| good	6.009 \| good	39.911 \| good	0.508 \| good	3.195 \| good	0.267 \| good
2026-03-09T05:00:00.000Z	36 \| good	0.707 \| good	6.018 \| good	39.396 \| good	0.534 \| good	3.71 \| good	0.281 \| good
2026-03-09T06:00:00.000Z	36 \| good	0.603 \| good	5.997 \| good	39.421 \| good	0.636 \| good	3.888 \| good	0.249 \| good
2026-03-09T07:00:00.000Z	36 \| good	0.602 \| good	5.996 \| good	38.642 \| good	0.821 \| good	5.259 \| good	0.188 \| good
2026-03-09T08:00:00.000Z	35 \| good	0.604 \| good	5.005 \| good	38.21 \| good	1.171 \| good	4.236 \| good	0.16 \| good
2026-03-09T09:00:00.000Z	37 \| good	0.601 \| good	6 \| good	39.988 \| good	0.751 \| good	2.561 \| good	0.219 \| good
2026-03-09T10:00:00.000Z	36 \| good	0.9 \| good	9.992 \| good	39.019 \| good	0.681 \| good	2.334 \| good	0.188 \| good
2026-03-09T11:00:00.000Z	38 \| good	0.901 \| good	7.991 \| good	40.692 \| good	0.572 \| good	7.911 \| good	0.204 \| good
2026-03-09T12:00:00.000Z	36 \| good	0.702 \| good	5.001 \| good	38.991 \| good	0.773 \| good	15.252 \| good	0.279 \| good
2026-03-09T13:00:00.000Z	35 \| good	0.802 \| good	4.008 \| good	37.793 \| good	0.773 \| good	19.251 \| good	0.369 \| good
2026-03-09T14:00:00.000Z	34 \| good	1.004 \| good	8.011 \| good	37.487 \| good	1.234 \| good	22.247 \| good	0.604 \| good
2026-03-09T15:00:00.000Z	33 \| good	1.703 \| good	19.994 \| good	35.852 \| good	1.381 \| good	25.91 \| good	0.679 \| good
2026-03-09T16:00:00.000Z	31 \| good	2.009 \| good	22.997 \| good	32.603 \| good	1.445 \| good	18.029 \| good	0.506 \| good
2026-03-09T17:00:00.000Z	35 \| good	2.005 \| good	24.972 \| good	37.58 \| good	0.954 \| good	11.688 \| good	0.235 \| good
2026-03-09T18:00:00.000Z	39 \| good	2.5 \| good	41.868 \| good	37.337 \| good	0.618 \| good	5.268 \| good	0.145 \| good
2026-03-09T19:00:00.000Z	37 \| good	2.001 \| good	28.932 \| good	40.266 \| good	0.477 \| good	9.248 \| good	0.174 \| good
2026-03-09T20:00:00.000Z	48 \| good	2.6 \| good	51.828 \| good	41.719 \| good	0.478 \| good	9.731 \| good	0.174 \| good
2026-03-09T20:00:00.000Z	37 \| good	2.001 \| good	28.932 \| good	40.266 \| good	0.477 \| good	9.248 \| good	0.174 \| good
2026-03-09T20:00:00.000Z	46 \| good	0.848 \| good	3.212 \| good	50.053 \| good	0.278 \| good	0.959 \| good	0.123 \| good
2026-03-09T21:00:00.000Z	47 \| good	0.984 \| good	4.021 \| good	51.174 \| good	0.221 \| good	0.591 \| good	0.118 \| good
2026-03-09T22:00:00.000Z	46 \| good	1.028 \| good	4.199 \| good	49.612 \| good	0.216 \| good	0.745 \| good	0.119 \| good
2026-03-09T23:00:00.000Z	44 \| good	0.626 \| good	2.07 \| good	46.661 \| good	0.212 \| good	0.899 \| good	0.121 \| good
2026-03-10T00:00:00.000Z	44 \| good	0.935 \| good	3.543 \| good	47.796 \| good	0.207 \| good	1.054 \| good	0.123 \| good
2026-03-10T01:00:00.000Z	44 \| good	1.547 \| good	6.438 \| good	46.981 \| good	0.309 \| good	3.695 \| good	0.144 \| good
2026-03-10T02:00:00.000Z	39 \| good	0.309 \| good	1.112 \| good	42.086 \| good	0.411 \| good	6.336 \| good	0.165 \| good
2026-03-10T03:00:00.000Z	36 \| good	0.854 \| good	3.456 \| good	38.589 \| good	0.513 \| good	8.977 \| good	0.186 \| good
2026-03-10T04:00:00.000Z	37 \| good	1.248 \| good	4.986 \| good	40.069 \| good	0.493 \| good	8.094 \| good	0.18 \| good
2026-03-10T05:00:00.000Z	41 \| good	1.215 \| good	4.952 \| good	43.633 \| good	0.474 \| good	7.212 \| good	0.173 \| good
2026-03-10T06:00:00.000Z	44 \| good	0.425 \| good	1.568 \| good	46.831 \| good	0.454 \| good	6.329 \| good	0.167 \| good
2026-03-10T07:00:00.000Z	40 \| good	1.109 \| good	4.559 \| good	42.743 \| good	0.412 \| good	5.327 \| good	0.159 \| good
2026-03-10T08:00:00.000Z	39 \| good	1.222 \| good	4.707 \| good	42.168 \| good	0.37 \| good	4.326 \| good	0.151 \| good
2026-03-10T09:00:00.000Z	39 \| good	0.788 \| good	2.789 \| good	41.866 \| good	0.328 \| good	3.324 \| good	0.143 \| good
2026-03-10T10:00:00.000Z	40 \| good	0.372 \| good	1.526 \| good	43.052 \| good	0.318 \| good	3.042 \| good	0.139 \| good
2026-03-10T11:00:00.000Z	39 \| good	0.395 \| good	1.526 \| good	42.426 \| good	0.308 \| good	2.759 \| good	0.135 \| good
2026-03-10T12:00:00.000Z	37 \| good	0.508 \| good	2 \| good	40.003 \| good	0.298 \| good	2.476 \| good	0.13 \| good
2026-03-10T13:00:00.000Z	36 \| good	0.602 \| good	1.938 \| good	38.599 \| good	0.345 \| good	3.486 \| good	0.143 \| good
2026-03-10T14:00:00.000Z	33 \| good	1.467 \| good	5.945 \| good	35.641 \| good	0.392 \| good	4.496 \| good	0.155 \| good
2026-03-10T15:00:00.000Z	35 \| good	1.851 \| good	7.73 \| good	37.795 \| good	0.44 \| good	5.506 \| good	0.168 \| good
2026-03-10T16:00:00.000Z	39 \| good	1.47 \| good	6.051 \| good	41.673 \| good	0.421 \| good	4.099 \| good	0.153 \| good
2026-03-10T17:00:00.000Z	41 \| good	0.802 \| good	2.889 \| good	44.198 \| good	0.403 \| good	2.692 \| good	0.138 \| good
2026-03-10T18:00:00.000Z	40 \| good	1.085 \| good	4.475 \| good	42.818 \| good	0.385 \| good	1.285 \| good	0.124 \| good
2026-03-10T19:00:00.000Z	44 \| good	1.259 \| good	4.99 \| good	47.69 \| good	0.312 \| good	0.985 \| good	0.12 \| good
2026-03-10T20:00:00.000Z	45 \| good	1.576 \| good	6.199 \| good	48.648 \| good	0.239 \| good	0.686 \| good	0.116 \| good
2026-03-10T21:00:00.000Z	45 \| good	1.817 \| good	7.525 \| good	48.874 \| good	0.167 \| good	0.386 \| good	0.112 \| good
2026-03-10T22:00:00.000Z	50 \| good	1.893 \| good	7.78 \| good	53.588 \| good	0.163 \| good	0.552 \| good	0.114 \| good
2026-03-10T23:00:00.000Z	49 \| good	1.565 \| good	6.591 \| good	53.047 \| good	0.159 \| good	0.718 \| good	0.116 \| good
2026-03-11T00:00:00.000Z	51 \| moderate	0.954 \| good	3.889 \| good	55.242 \| fine	0.155 \| good	0.885 \| good	0.117 \| good
2026-03-11T01:00:00.000Z	46 \| good	1.448 \| good	5.746 \| good	50.176 \| good	0.307 \| good	4.584 \| good	0.148 \| good
2026-03-11T02:00:00.000Z	44 \| good	1.984 \| good	8.058 \| good	47.409 \| good	0.459 \| good	8.284 \| good	0.179 \| good
2026-03-11T03:00:00.000Z	44 \| good	1.287 \| good	5.068 \| good	46.742 \| good	0.611 \| good	11.984 \| good	0.209 \| good
2026-03-11T04:00:00.000Z	39 \| good	1.721 \| good	7.254 \| good	42.325 \| good	0.525 \| good	9.632 \| good	0.191 \| good
2026-03-11T05:00:00.000Z	40 \| good	1.847 \| good	7.672 \| good	43.429 \| good	0.44 \| good	7.281 \| good	0.173 \| good
2026-03-11T06:00:00.000Z	33 \| good	3.741 \| good	4.495 \| good	36.073 \| good	0.357 \| good	4.92 \| good	0.154 \| good
2026-03-11T07:00:00.000Z	44 \| good	0.752 \| good	2.62 \| good	47.777 \| good	0.327 \| good	4.485 \| good	0.15 \| good
2026-03-11T08:00:00.000Z	38 \| good	0.637 \| good	2.46 \| good	40.575 \| good	0.3 \| good	4.041 \| good	0.146 \| good
2026-03-11T09:00:00.000Z	42 \| good	0.535 \| good	1.799 \| good	44.998 \| good	0.272 \| good	3.597 \| good	0.142 \| good
2026-03-11T10:00:00.000Z	44 \| good	0.551 \| good	2 \| good	46.921 \| good	0.263 \| good	3.371 \| good	0.139 \| good
2026-03-11T11:00:00.000Z	40 \| good	0.641 \| good	2.365 \| good	42.734 \| good	0.255 \| good	3.145 \| good	0.135 \| good
2026-03-11T12:00:00.000Z	32 \| good	3.28 \| good	4.74 \| good	34.82 \| good	0.247 \| good	2.933 \| good	0.132 \| good
2026-03-11T13:00:00.000Z	33 \| good	3.347 \| good	5.063 \| good	35.773 \| good	0.288 \| good	3.215 \| good	0.138 \| good
2026-03-11T14:00:00.000Z	34 \| good	3.851 \| good	5.656 \| good	36.725 \| good	0.33 \| good	3.498 \| good	0.143 \| good
2026-03-11T15:00:00.000Z	35 \| good	3.83 \| good	5.803 \| good	37.678 \| good	0.372 \| good	3.78 \| good	0.149 \| good
2026-03-11T16:00:00.000Z	39 \| good	3.396 \| good	5.846 \| good	41.992 \| good	0.317 \| good	2.799 \| good	0.14 \| good
2026-03-11T17:00:00.000Z	43 \| good	1.773 \| good	7.342 \| good	46.259 \| good	0.262 \| good	1.803 \| good	0.131 \| good
2026-03-11T18:00:00.000Z	47 \| good	2.197 \| good	3.907 \| good	50.618 \| good	0.208 \| good	0.836 \| good	0.123 \| good
2026-03-11T19:00:00.000Z	49 \| good	1.829 \| good	3.125 \| good	52.786 \| good	0.203 \| good	0.808 \| good	0.121 \| good

Boulder

Get reliable air quality data to drive your business

Boulder, Colorado air quality map: Stay updated on AQI near you

0.14ppm

How accurate is Colorado, USA air quality data?

Air quality and pollutant data for Colorado, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Boulder, Colorado?

The air quality information for Boulder, Colorado is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Boulder, Colorado at its worst?

In the past 24 hours, the air quality in Boulder, Colorado was at its worst at 03:00:00 on 2026-03-09.

When did Boulder, Colorado experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Boulder, Colorado was observed at 04:00:00 on 2026-03-09.

What is the AQI in Boulder, Colorado right now?

As of now, the AQI in Boulder, Colorado is 37, indicating Good conditions.

What is the most common type of pollution in Boulder, Colorado?

Boulder, Colorado air has the highest levels of O3.

What should I do in case of poor air quality in Boulder, Colorado?

Poor air quality in Boulder, Colorado means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Boulder, Colorado at the moment?

PM_2.5 levels in Boulder, Colorado are currently 2.001 μg/m³.

What is the PM₁₀ level in Boulder, Colorado at the moment?

The PM₁₀ concentration in Boulder, Colorado is 28.932 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Boulder, Colorado at the moment?

The current carbon monoxide (CO) concentration in Boulder, Colorado is 0.174 ppm.

What is the sulfur dioxide (SO₂) level in Boulder, Colorado at the moment?

Currently, Boulder, Colorado has a sulfur dioxide (SO₂) concentration of 0.477 ppb.

What is the ozone (O₃) level in Boulder, Colorado at the moment?

The current ozone (O₃) level in Boulder, Colorado at the moment is 40.266 ppm.

What is the nitrogen dioxide (NO₂) level in Boulder, Colorado at the moment?

Nitrogen dioxide (NO₂) level in Boulder, Colorado at the moment is 9.248 ppb.

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