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

The PM10 concentration in Boulder, Colorado is 30.064 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 1.806 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 37.056 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 7.594 ppb.

Live air quality index in Boulder, Colorado today

Name: Live air pollution levels in Boulder, Colorado today
Creator: Ambee

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)

6.14 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

14.11 μg/m³

155

255

425

605+

Ozone (O₃)

47.90 ppb

201

201+

Sulfur Dioxide (SO₂)

0.36 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.27 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.22 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Boulder, Colorado

Get Live Pollen Counts

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
2025-09-05T22:00:00.000Z	77 \| moderate	22.791 \| fine	74.865 \| fine	42.834 \| good	0.346 \| good	7.415 \| good	0.231 \| good
2025-09-05T23:00:00.000Z	77 \| moderate	23.115 \| fine	67.497 \| fine	43.485 \| good	0.318 \| good	8.026 \| good	0.245 \| good
2025-09-06T00:00:00.000Z	75 \| moderate	21.516 \| fine	60.359 \| fine	43.109 \| good	0.345 \| good	10.089 \| good	0.276 \| good
2025-09-06T01:00:00.000Z	77 \| moderate	22.615 \| fine	76.78 \| fine	42.26 \| good	0.347 \| good	11.862 \| good	0.339 \| good
2025-09-06T02:00:00.000Z	69 \| moderate	19.437 \| fine	68.934 \| fine	41.885 \| good	0.279 \| good	11.733 \| good	0.371 \| good
2025-09-06T03:00:00.000Z	71 \| moderate	19.618 \| fine	61.886 \| fine	40.649 \| good	0.214 \| good	14.167 \| good	0.419 \| good
2025-09-06T04:00:00.000Z	73 \| moderate	20.733 \| fine	61.296 \| fine	40.41 \| good	0.341 \| good	12.64 \| good	0.356 \| good
2025-09-06T05:00:00.000Z	73 \| moderate	21.126 \| fine	68.545 \| fine	38.504 \| good	0.333 \| good	12.986 \| good	0.468 \| good
2025-09-06T06:00:00.000Z	75 \| moderate	21.831 \| fine	65.742 \| fine	35.757 \| good	0.247 \| good	18.247 \| good	0.486 \| good
2025-09-06T07:00:00.000Z	77 \| moderate	22.592 \| fine	79.016 \| fine	34.82 \| good	0.344 \| good	17.333 \| good	0.486 \| good
2025-09-06T08:00:00.000Z	73 \| moderate	21.407 \| fine	76.278 \| fine	31.807 \| good	0.375 \| good	19.492 \| good	0.406 \| good
2025-09-06T09:00:00.000Z	79 \| moderate	23.743 \| fine	56.447 \| fine	32.178 \| good	0.271 \| good	14.976 \| good	0.374 \| good
2025-09-06T10:00:00.000Z	77 \| moderate	22.858 \| fine	42.608 \| good	31.435 \| good	0.238 \| good	9.06 \| good	0.333 \| good
2025-09-06T11:00:00.000Z	75 \| moderate	21.897 \| fine	46.92 \| good	32.359 \| good	0.271 \| good	9.859 \| good	0.267 \| good
2025-09-06T12:00:00.000Z	77 \| moderate	22.663 \| fine	55.932 \| fine	33.036 \| good	0.369 \| good	7.433 \| good	0.267 \| good
2025-09-06T13:00:00.000Z	77 \| moderate	23.424 \| fine	86.943 \| fine	33.599 \| good	0.468 \| good	9.063 \| good	0.356 \| good
2025-09-06T14:00:00.000Z	81 \| moderate	24.504 \| fine	52.749 \| good	32.939 \| good	0.782 \| good	10.917 \| good	0.356 \| good
2025-09-06T15:00:00.000Z	75 \| moderate	22.478 \| fine	68.798 \| fine	32.178 \| good	0.998 \| good	12.035 \| good	0.325 \| good
2025-09-06T16:00:00.000Z	77 \| moderate	23.476 \| fine	54.858 \| good	34.016 \| good	1.268 \| good	12.151 \| good	0.312 \| good
2025-09-06T17:00:00.000Z	79 \| moderate	24.043 \| fine	66.767 \| fine	36.837 \| good	0.674 \| good	9.44 \| good	0.267 \| good
2025-09-06T18:00:00.000Z	79 \| moderate	24.411 \| fine	62.117 \| fine	38.462 \| good	0.387 \| good	6.979 \| good	0.28 \| good
2025-09-06T19:00:00.000Z	77 \| moderate	22.881 \| fine	67.385 \| fine	44.357 \| good	0.388 \| good	6.186 \| good	0.28 \| good
2025-09-06T20:00:00.000Z	75 \| moderate	22.351 \| fine	64.437 \| fine	50.679 \| good	0.324 \| good	5.703 \| good	0.245 \| good
2025-09-06T21:00:00.000Z	75 \| moderate	22.168 \| fine	81.605 \| fine	59.027 \| fine	0.325 \| good	7.594 \| good	0.276 \| good
2025-09-06T22:00:00.000Z	80 \| moderate	21.77 \| fine	75.519 \| fine	64.123 \| fine	0.32 \| good	7.044 \| good	0.276 \| good
2025-09-06T23:00:00.000Z	87 \| moderate	23.258 \| fine	75.465 \| fine	66.24 \| fine	0.3 \| good	7.917 \| good	0.308 \| good
2025-09-07T00:00:00.000Z	97 \| moderate	20.648 \| fine	60.883 \| fine	68.931 \| fine	0.352 \| good	8.771 \| good	0.308 \| good
2025-09-07T01:00:00.000Z	93 \| moderate	21.538 \| fine	60.021 \| fine	67.763 \| fine	0.38 \| good	10.514 \| good	0.352 \| good
2025-09-07T02:00:00.000Z	87 \| moderate	21.078 \| fine	51.229 \| good	65.553 \| fine	0.445 \| good	9.33 \| good	0.394 \| good
2025-09-07T03:00:00.000Z	79 \| moderate	23.687 \| fine	103.802 \| fine	42.784 \| good	1.363 \| good	11.415 \| good	0.315 \| good
2025-09-07T04:00:00.000Z	71 \| moderate	20.025 \| fine	71.641 \| fine	58.173 \| fine	0.525 \| good	11.759 \| good	0.486 \| good
2025-09-07T05:00:00.000Z	71 \| moderate	20.45 \| fine	75.881 \| fine	55.064 \| fine	0.409 \| good	14.004 \| good	0.441 \| good
2025-09-07T06:00:00.000Z	71 \| moderate	20.235 \| fine	69.647 \| fine	55.616 \| fine	0.344 \| good	13.539 \| good	0.463 \| good
2025-09-07T07:00:00.000Z	75 \| moderate	21.915 \| fine	86.452 \| fine	52.151 \| good	0.409 \| good	10.87 \| good	0.494 \| good
2025-09-07T08:00:00.000Z	73 \| moderate	21.13 \| fine	69.72 \| fine	47.838 \| good	0.377 \| good	7.565 \| good	0.459 \| good
2025-09-07T09:00:00.000Z	71 \| moderate	20.486 \| fine	63.485 \| fine	47.293 \| good	0.337 \| good	4.269 \| good	0.323 \| good
2025-09-07T10:00:00.000Z	69 \| moderate	19.134 \| fine	44.578 \| good	45.013 \| good	0.235 \| good	4.287 \| good	0.298 \| good
2025-09-07T11:00:00.000Z	67 \| moderate	18.256 \| fine	41.898 \| good	43.099 \| good	0.279 \| good	4.268 \| good	0.225 \| good
2025-09-07T12:00:00.000Z	64 \| moderate	15.585 \| fine	42.439 \| good	38.878 \| good	0.316 \| good	4.228 \| good	0.291 \| good
2025-09-07T13:00:00.000Z	64 \| moderate	16.021 \| fine	47.849 \| good	38.406 \| good	0.253 \| good	6.725 \| good	0.291 \| good
2025-09-07T14:00:00.000Z	67 \| moderate	18.337 \| fine	68.992 \| fine	38.572 \| good	0.435 \| good	6.087 \| good	0.322 \| good
2025-09-07T15:00:00.000Z	67 \| moderate	17.715 \| fine	63.206 \| fine	38.678 \| good	0.444 \| good	7.746 \| good	0.305 \| good
2025-09-07T16:00:00.000Z	64 \| moderate	15.506 \| fine	30.142 \| good	39.962 \| good	1.181 \| good	5.784 \| good	0.371 \| good
2025-09-07T17:00:00.000Z	66 \| moderate	17.207 \| fine	61.098 \| fine	44.468 \| good	1.81 \| good	8.01 \| good	0.34 \| good
2025-09-07T18:00:00.000Z	62 \| moderate	14.943 \| fine	37.655 \| good	48.059 \| good	1.858 \| good	10.089 \| good	0.336 \| good
2025-09-07T19:00:00.000Z	58 \| moderate	12.677 \| fine	33.529 \| good	50.594 \| good	0.693 \| good	8.17 \| good	0.287 \| good
2025-09-07T20:00:00.000Z	56 \| moderate	12.393 \| fine	30.609 \| good	51.439 \| good	0.361 \| good	4.427 \| good	0.225 \| good
2025-09-07T21:00:00.000Z	51 \| moderate	8.511 \| good	28.643 \| good	54.81 \| good	0.396 \| good	3.807 \| good	0.18 \| good
2025-09-07T21:00:00.000Z	44 \| good	6.137 \| good	14.114 \| good	47.904 \| good	0.362 \| good	4.273 \| good	0.22 \| good
2025-09-07T19:00:00.000Z	58 \| moderate	13.482 \| fine	60.703 \| fine	52.658 \| good	0.193 \| good	0.751 \| good	0.11 \| good
2025-09-07T20:00:00.000Z	60 \| moderate	13.913 \| fine	62.833 \| fine	55.15 \| fine	0.156 \| good	0.738 \| good	0.108 \| good
2025-09-07T21:00:00.000Z	60 \| moderate	14.413 \| fine	64.903 \| fine	52.863 \| good	0.118 \| good	0.726 \| good	0.106 \| good
2025-09-07T22:00:00.000Z	56 \| moderate	11.999 \| good	53.697 \| good	53.15 \| good	0.153 \| good	0.989 \| good	0.108 \| good
2025-09-07T23:00:00.000Z	61 \| moderate	12.518 \| fine	56.265 \| fine	57.531 \| fine	0.189 \| good	1.251 \| good	0.109 \| good
2025-09-08T00:00:00.000Z	71 \| moderate	19.595 \| fine	86.264 \| fine	55.794 \| fine	0.224 \| good	1.514 \| good	0.111 \| good
2025-09-08T01:00:00.000Z	97 \| moderate	33.793 \| fine	147.083 \| fine	52.909 \| good	0.289 \| good	4.845 \| good	0.14 \| good
2025-09-08T02:00:00.000Z	96 \| moderate	32.826 \| fine	142.303 \| fine	49.267 \| good	0.355 \| good	8.176 \| good	0.17 \| good
2025-09-08T03:00:00.000Z	97 \| moderate	34.108 \| fine	147.75 \| fine	46.066 \| good	0.42 \| good	11.507 \| good	0.199 \| good
2025-09-08T04:00:00.000Z	71 \| moderate	19.828 \| fine	87.079 \| fine	45.872 \| good	0.406 \| good	11.054 \| good	0.195 \| good
2025-09-08T05:00:00.000Z	64 \| moderate	16.008 \| fine	71.414 \| fine	45.653 \| good	0.392 \| good	10.6 \| good	0.191 \| good
2025-09-08T06:00:00.000Z	56 \| moderate	11.686 \| good	52.146 \| good	49.62 \| good	0.378 \| good	10.147 \| good	0.187 \| good
2025-09-08T07:00:00.000Z	56 \| moderate	11.878 \| good	52.747 \| good	46.881 \| good	0.325 \| good	8.822 \| good	0.173 \| good
2025-09-08T08:00:00.000Z	56 \| moderate	12.133 \| fine	54.579 \| good	46.342 \| good	0.271 \| good	7.497 \| good	0.159 \| good
2025-09-08T09:00:00.000Z	56 \| moderate	12.24 \| fine	54.925 \| good	43 \| good	0.218 \| good	6.172 \| good	0.145 \| good
2025-09-08T10:00:00.000Z	56 \| moderate	12.365 \| fine	56.113 \| fine	41.59 \| good	0.208 \| good	5.605 \| good	0.138 \| good
2025-09-08T11:00:00.000Z	60 \| moderate	14.114 \| fine	62.973 \| fine	45.217 \| good	0.198 \| good	5.039 \| good	0.132 \| good
2025-09-08T12:00:00.000Z	64 \| moderate	15.507 \| fine	68.955 \| fine	42.915 \| good	0.188 \| good	4.472 \| good	0.126 \| good
2025-09-08T13:00:00.000Z	60 \| moderate	13.868 \| fine	62.603 \| fine	42.014 \| good	0.216 \| good	4.335 \| good	0.134 \| good
2025-09-08T14:00:00.000Z	60 \| moderate	14.305 \| fine	64.337 \| fine	41.472 \| good	0.244 \| good	4.198 \| good	0.141 \| good
2025-09-08T15:00:00.000Z	60 \| moderate	13.767 \| fine	61.623 \| fine	41.181 \| good	0.272 \| good	4.062 \| good	0.148 \| good
2025-09-08T16:00:00.000Z	60 \| moderate	13.981 \| fine	62.763 \| fine	45.263 \| good	0.307 \| good	2.882 \| good	0.13 \| good
2025-09-08T17:00:00.000Z	60 \| moderate	13.692 \| fine	61.402 \| fine	48.638 \| good	0.343 \| good	1.703 \| good	0.111 \| good
2025-09-08T18:00:00.000Z	62 \| moderate	14.522 \| fine	65.004 \| fine	50.463 \| good	0.378 \| good	0.524 \| good	0.093 \| good
2025-09-08T19:00:00.000Z	58 \| moderate	13.424 \| fine	60.86 \| fine	52.731 \| good	0.366 \| good	0.546 \| good	0.092 \| good
2025-09-08T20:00:00.000Z	62 \| moderate	14.666 \| fine	65.819 \| fine	54.13 \| good	0.354 \| good	0.567 \| good	0.092 \| good
2025-09-08T21:00:00.000Z	62 \| moderate	14.985 \| fine	67.29 \| fine	53.845 \| good	0.342 \| good	0.588 \| good	0.091 \| good
2025-09-08T22:00:00.000Z	64 \| moderate	16.006 \| fine	71.021 \| fine	55.127 \| fine	0.346 \| good	1.345 \| good	0.098 \| good
2025-09-08T23:00:00.000Z	69 \| moderate	19.053 \| fine	84.182 \| fine	52.127 \| good	0.35 \| good	2.101 \| good	0.104 \| good
2025-09-09T00:00:00.000Z	75 \| moderate	22.476 \| fine	98.676 \| fine	49.573 \| good	0.353 \| good	2.858 \| good	0.111 \| good
2025-09-09T01:00:00.000Z	81 \| moderate	25.025 \| fine	108.809 \| fine	47.797 \| good	0.343 \| good	3.805 \| good	0.12 \| good
2025-09-09T02:00:00.000Z	75 \| moderate	21.903 \| fine	96.022 \| fine	46.1 \| good	0.333 \| good	4.752 \| good	0.129 \| good
2025-09-09T03:00:00.000Z	75 \| moderate	22.24 \| fine	97.284 \| fine	44.199 \| good	0.322 \| good	5.699 \| good	0.137 \| good
2025-09-09T04:00:00.000Z	69 \| moderate	18.997 \| fine	83.804 \| fine	40.452 \| good	0.312 \| good	6.08 \| good	0.141 \| good
2025-09-09T05:00:00.000Z	66 \| moderate	17.452 \| fine	77.21 \| fine	40.183 \| good	0.301 \| good	6.46 \| good	0.144 \| good
2025-09-09T06:00:00.000Z	67 \| moderate	17.653 \| fine	78.373 \| fine	40.713 \| good	0.291 \| good	6.841 \| good	0.147 \| good
2025-09-09T07:00:00.000Z	66 \| moderate	17.354 \| fine	76.736 \| fine	38.326 \| good	0.268 \| good	6.257 \| good	0.141 \| good
2025-09-09T08:00:00.000Z	66 \| moderate	16.557 \| fine	73.733 \| fine	38.012 \| good	0.244 \| good	5.674 \| good	0.135 \| good
2025-09-09T09:00:00.000Z	66 \| moderate	16.537 \| fine	72.998 \| fine	36.878 \| good	0.221 \| good	5.09 \| good	0.129 \| good
2025-09-09T10:00:00.000Z	64 \| moderate	15.944 \| fine	71.206 \| fine	35.777 \| good	0.219 \| good	4.632 \| good	0.123 \| good
2025-09-09T11:00:00.000Z	67 \| moderate	17.828 \| fine	78.59 \| fine	33.074 \| good	0.217 \| good	4.174 \| good	0.116 \| good
2025-09-09T12:00:00.000Z	67 \| moderate	17.636 \| fine	77.902 \| fine	33.539 \| good	0.215 \| good	3.716 \| good	0.11 \| good
2025-09-09T13:00:00.000Z	66 \| moderate	16.831 \| fine	74.668 \| fine	31.97 \| good	0.245 \| good	3.974 \| good	0.121 \| good
2025-09-09T14:00:00.000Z	64 \| moderate	16.424 \| fine	72.94 \| fine	31.738 \| good	0.274 \| good	4.232 \| good	0.133 \| good
2025-09-09T15:00:00.000Z	62 \| moderate	15.178 \| fine	67.792 \| fine	35.644 \| good	0.304 \| good	4.49 \| good	0.145 \| good
2025-09-09T16:00:00.000Z	60 \| moderate	13.889 \| fine	62.47 \| fine	41.399 \| good	0.38 \| good	3.41 \| good	0.129 \| good
2025-09-09T17:00:00.000Z	62 \| moderate	14.648 \| fine	65.385 \| fine	45.162 \| good	0.455 \| good	2.331 \| good	0.114 \| good
2025-09-09T18:00:00.000Z	66 \| moderate	16.542 \| fine	73.69 \| fine	49.371 \| good	0.531 \| good	1.251 \| good	0.098 \| good

Boulder

Get reliable air quality data to drive your business

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

0.33ppm

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

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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 12:00:00 on 2025-09-07.

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 2025-09-07.

What is the AQI in Boulder, Colorado right now?

As of now, the AQI in Boulder, Colorado is 60, indicating Moderate conditions.

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

Boulder, Colorado air has the highest levels of PM2.5.

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 13.809 μg/m³.

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

The PM₁₀ concentration in Boulder, Colorado is 30.064 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 0.328 ppm.

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

Currently, Boulder, Colorado has a sulfur dioxide (SO₂) concentration of 1.806 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 37.056 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 7.594 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-05T22:00:00.000Z	77 \| moderate	22.791 \| fine	74.865 \| fine	42.834 \| good	0.346 \| good	7.415 \| good	0.231 \| good
2025-09-05T23:00:00.000Z	77 \| moderate	23.115 \| fine	67.497 \| fine	43.485 \| good	0.318 \| good	8.026 \| good	0.245 \| good
2025-09-06T00:00:00.000Z	75 \| moderate	21.516 \| fine	60.359 \| fine	43.109 \| good	0.345 \| good	10.089 \| good	0.276 \| good
2025-09-06T01:00:00.000Z	77 \| moderate	22.615 \| fine	76.78 \| fine	42.26 \| good	0.347 \| good	11.862 \| good	0.339 \| good
2025-09-06T02:00:00.000Z	69 \| moderate	19.437 \| fine	68.934 \| fine	41.885 \| good	0.279 \| good	11.733 \| good	0.371 \| good
2025-09-06T03:00:00.000Z	71 \| moderate	19.618 \| fine	61.886 \| fine	40.649 \| good	0.214 \| good	14.167 \| good	0.419 \| good
2025-09-06T04:00:00.000Z	73 \| moderate	20.733 \| fine	61.296 \| fine	40.41 \| good	0.341 \| good	12.64 \| good	0.356 \| good
2025-09-06T05:00:00.000Z	73 \| moderate	21.126 \| fine	68.545 \| fine	38.504 \| good	0.333 \| good	12.986 \| good	0.468 \| good
2025-09-06T06:00:00.000Z	75 \| moderate	21.831 \| fine	65.742 \| fine	35.757 \| good	0.247 \| good	18.247 \| good	0.486 \| good
2025-09-06T07:00:00.000Z	77 \| moderate	22.592 \| fine	79.016 \| fine	34.82 \| good	0.344 \| good	17.333 \| good	0.486 \| good
2025-09-06T08:00:00.000Z	73 \| moderate	21.407 \| fine	76.278 \| fine	31.807 \| good	0.375 \| good	19.492 \| good	0.406 \| good
2025-09-06T09:00:00.000Z	79 \| moderate	23.743 \| fine	56.447 \| fine	32.178 \| good	0.271 \| good	14.976 \| good	0.374 \| good
2025-09-06T10:00:00.000Z	77 \| moderate	22.858 \| fine	42.608 \| good	31.435 \| good	0.238 \| good	9.06 \| good	0.333 \| good
2025-09-06T11:00:00.000Z	75 \| moderate	21.897 \| fine	46.92 \| good	32.359 \| good	0.271 \| good	9.859 \| good	0.267 \| good
2025-09-06T12:00:00.000Z	77 \| moderate	22.663 \| fine	55.932 \| fine	33.036 \| good	0.369 \| good	7.433 \| good	0.267 \| good
2025-09-06T13:00:00.000Z	77 \| moderate	23.424 \| fine	86.943 \| fine	33.599 \| good	0.468 \| good	9.063 \| good	0.356 \| good
2025-09-06T14:00:00.000Z	81 \| moderate	24.504 \| fine	52.749 \| good	32.939 \| good	0.782 \| good	10.917 \| good	0.356 \| good
2025-09-06T15:00:00.000Z	75 \| moderate	22.478 \| fine	68.798 \| fine	32.178 \| good	0.998 \| good	12.035 \| good	0.325 \| good
2025-09-06T16:00:00.000Z	77 \| moderate	23.476 \| fine	54.858 \| good	34.016 \| good	1.268 \| good	12.151 \| good	0.312 \| good
2025-09-06T17:00:00.000Z	79 \| moderate	24.043 \| fine	66.767 \| fine	36.837 \| good	0.674 \| good	9.44 \| good	0.267 \| good
2025-09-06T18:00:00.000Z	79 \| moderate	24.411 \| fine	62.117 \| fine	38.462 \| good	0.387 \| good	6.979 \| good	0.28 \| good
2025-09-06T19:00:00.000Z	77 \| moderate	22.881 \| fine	67.385 \| fine	44.357 \| good	0.388 \| good	6.186 \| good	0.28 \| good
2025-09-06T20:00:00.000Z	75 \| moderate	22.351 \| fine	64.437 \| fine	50.679 \| good	0.324 \| good	5.703 \| good	0.245 \| good
2025-09-06T21:00:00.000Z	75 \| moderate	22.168 \| fine	81.605 \| fine	59.027 \| fine	0.325 \| good	7.594 \| good	0.276 \| good
2025-09-06T22:00:00.000Z	80 \| moderate	21.77 \| fine	75.519 \| fine	64.123 \| fine	0.32 \| good	7.044 \| good	0.276 \| good
2025-09-06T23:00:00.000Z	87 \| moderate	23.258 \| fine	75.465 \| fine	66.24 \| fine	0.3 \| good	7.917 \| good	0.308 \| good
2025-09-07T00:00:00.000Z	97 \| moderate	20.648 \| fine	60.883 \| fine	68.931 \| fine	0.352 \| good	8.771 \| good	0.308 \| good
2025-09-07T01:00:00.000Z	93 \| moderate	21.538 \| fine	60.021 \| fine	67.763 \| fine	0.38 \| good	10.514 \| good	0.352 \| good
2025-09-07T02:00:00.000Z	87 \| moderate	21.078 \| fine	51.229 \| good	65.553 \| fine	0.445 \| good	9.33 \| good	0.394 \| good
2025-09-07T03:00:00.000Z	79 \| moderate	23.687 \| fine	103.802 \| fine	42.784 \| good	1.363 \| good	11.415 \| good	0.315 \| good
2025-09-07T04:00:00.000Z	71 \| moderate	20.025 \| fine	71.641 \| fine	58.173 \| fine	0.525 \| good	11.759 \| good	0.486 \| good
2025-09-07T05:00:00.000Z	71 \| moderate	20.45 \| fine	75.881 \| fine	55.064 \| fine	0.409 \| good	14.004 \| good	0.441 \| good
2025-09-07T06:00:00.000Z	71 \| moderate	20.235 \| fine	69.647 \| fine	55.616 \| fine	0.344 \| good	13.539 \| good	0.463 \| good
2025-09-07T07:00:00.000Z	75 \| moderate	21.915 \| fine	86.452 \| fine	52.151 \| good	0.409 \| good	10.87 \| good	0.494 \| good
2025-09-07T08:00:00.000Z	73 \| moderate	21.13 \| fine	69.72 \| fine	47.838 \| good	0.377 \| good	7.565 \| good	0.459 \| good
2025-09-07T09:00:00.000Z	71 \| moderate	20.486 \| fine	63.485 \| fine	47.293 \| good	0.337 \| good	4.269 \| good	0.323 \| good
2025-09-07T10:00:00.000Z	69 \| moderate	19.134 \| fine	44.578 \| good	45.013 \| good	0.235 \| good	4.287 \| good	0.298 \| good
2025-09-07T11:00:00.000Z	67 \| moderate	18.256 \| fine	41.898 \| good	43.099 \| good	0.279 \| good	4.268 \| good	0.225 \| good
2025-09-07T12:00:00.000Z	64 \| moderate	15.585 \| fine	42.439 \| good	38.878 \| good	0.316 \| good	4.228 \| good	0.291 \| good
2025-09-07T13:00:00.000Z	64 \| moderate	16.021 \| fine	47.849 \| good	38.406 \| good	0.253 \| good	6.725 \| good	0.291 \| good
2025-09-07T14:00:00.000Z	67 \| moderate	18.337 \| fine	68.992 \| fine	38.572 \| good	0.435 \| good	6.087 \| good	0.322 \| good
2025-09-07T15:00:00.000Z	67 \| moderate	17.715 \| fine	63.206 \| fine	38.678 \| good	0.444 \| good	7.746 \| good	0.305 \| good
2025-09-07T16:00:00.000Z	64 \| moderate	15.506 \| fine	30.142 \| good	39.962 \| good	1.181 \| good	5.784 \| good	0.371 \| good
2025-09-07T17:00:00.000Z	66 \| moderate	17.207 \| fine	61.098 \| fine	44.468 \| good	1.81 \| good	8.01 \| good	0.34 \| good
2025-09-07T18:00:00.000Z	62 \| moderate	14.943 \| fine	37.655 \| good	48.059 \| good	1.858 \| good	10.089 \| good	0.336 \| good
2025-09-07T19:00:00.000Z	58 \| moderate	12.677 \| fine	33.529 \| good	50.594 \| good	0.693 \| good	8.17 \| good	0.287 \| good
2025-09-07T20:00:00.000Z	56 \| moderate	12.393 \| fine	30.609 \| good	51.439 \| good	0.361 \| good	4.427 \| good	0.225 \| good
2025-09-07T21:00:00.000Z	51 \| moderate	8.511 \| good	28.643 \| good	54.81 \| good	0.396 \| good	3.807 \| good	0.18 \| good
2025-09-07T21:00:00.000Z	44 \| good	6.137 \| good	14.114 \| good	47.904 \| good	0.362 \| good	4.273 \| good	0.22 \| good
2025-09-07T19:00:00.000Z	58 \| moderate	13.482 \| fine	60.703 \| fine	52.658 \| good	0.193 \| good	0.751 \| good	0.11 \| good
2025-09-07T20:00:00.000Z	60 \| moderate	13.913 \| fine	62.833 \| fine	55.15 \| fine	0.156 \| good	0.738 \| good	0.108 \| good
2025-09-07T21:00:00.000Z	60 \| moderate	14.413 \| fine	64.903 \| fine	52.863 \| good	0.118 \| good	0.726 \| good	0.106 \| good
2025-09-07T22:00:00.000Z	56 \| moderate	11.999 \| good	53.697 \| good	53.15 \| good	0.153 \| good	0.989 \| good	0.108 \| good
2025-09-07T23:00:00.000Z	61 \| moderate	12.518 \| fine	56.265 \| fine	57.531 \| fine	0.189 \| good	1.251 \| good	0.109 \| good
2025-09-08T00:00:00.000Z	71 \| moderate	19.595 \| fine	86.264 \| fine	55.794 \| fine	0.224 \| good	1.514 \| good	0.111 \| good
2025-09-08T01:00:00.000Z	97 \| moderate	33.793 \| fine	147.083 \| fine	52.909 \| good	0.289 \| good	4.845 \| good	0.14 \| good
2025-09-08T02:00:00.000Z	96 \| moderate	32.826 \| fine	142.303 \| fine	49.267 \| good	0.355 \| good	8.176 \| good	0.17 \| good
2025-09-08T03:00:00.000Z	97 \| moderate	34.108 \| fine	147.75 \| fine	46.066 \| good	0.42 \| good	11.507 \| good	0.199 \| good
2025-09-08T04:00:00.000Z	71 \| moderate	19.828 \| fine	87.079 \| fine	45.872 \| good	0.406 \| good	11.054 \| good	0.195 \| good
2025-09-08T05:00:00.000Z	64 \| moderate	16.008 \| fine	71.414 \| fine	45.653 \| good	0.392 \| good	10.6 \| good	0.191 \| good
2025-09-08T06:00:00.000Z	56 \| moderate	11.686 \| good	52.146 \| good	49.62 \| good	0.378 \| good	10.147 \| good	0.187 \| good
2025-09-08T07:00:00.000Z	56 \| moderate	11.878 \| good	52.747 \| good	46.881 \| good	0.325 \| good	8.822 \| good	0.173 \| good
2025-09-08T08:00:00.000Z	56 \| moderate	12.133 \| fine	54.579 \| good	46.342 \| good	0.271 \| good	7.497 \| good	0.159 \| good
2025-09-08T09:00:00.000Z	56 \| moderate	12.24 \| fine	54.925 \| good	43 \| good	0.218 \| good	6.172 \| good	0.145 \| good
2025-09-08T10:00:00.000Z	56 \| moderate	12.365 \| fine	56.113 \| fine	41.59 \| good	0.208 \| good	5.605 \| good	0.138 \| good
2025-09-08T11:00:00.000Z	60 \| moderate	14.114 \| fine	62.973 \| fine	45.217 \| good	0.198 \| good	5.039 \| good	0.132 \| good
2025-09-08T12:00:00.000Z	64 \| moderate	15.507 \| fine	68.955 \| fine	42.915 \| good	0.188 \| good	4.472 \| good	0.126 \| good
2025-09-08T13:00:00.000Z	60 \| moderate	13.868 \| fine	62.603 \| fine	42.014 \| good	0.216 \| good	4.335 \| good	0.134 \| good
2025-09-08T14:00:00.000Z	60 \| moderate	14.305 \| fine	64.337 \| fine	41.472 \| good	0.244 \| good	4.198 \| good	0.141 \| good
2025-09-08T15:00:00.000Z	60 \| moderate	13.767 \| fine	61.623 \| fine	41.181 \| good	0.272 \| good	4.062 \| good	0.148 \| good
2025-09-08T16:00:00.000Z	60 \| moderate	13.981 \| fine	62.763 \| fine	45.263 \| good	0.307 \| good	2.882 \| good	0.13 \| good
2025-09-08T17:00:00.000Z	60 \| moderate	13.692 \| fine	61.402 \| fine	48.638 \| good	0.343 \| good	1.703 \| good	0.111 \| good
2025-09-08T18:00:00.000Z	62 \| moderate	14.522 \| fine	65.004 \| fine	50.463 \| good	0.378 \| good	0.524 \| good	0.093 \| good
2025-09-08T19:00:00.000Z	58 \| moderate	13.424 \| fine	60.86 \| fine	52.731 \| good	0.366 \| good	0.546 \| good	0.092 \| good
2025-09-08T20:00:00.000Z	62 \| moderate	14.666 \| fine	65.819 \| fine	54.13 \| good	0.354 \| good	0.567 \| good	0.092 \| good
2025-09-08T21:00:00.000Z	62 \| moderate	14.985 \| fine	67.29 \| fine	53.845 \| good	0.342 \| good	0.588 \| good	0.091 \| good
2025-09-08T22:00:00.000Z	64 \| moderate	16.006 \| fine	71.021 \| fine	55.127 \| fine	0.346 \| good	1.345 \| good	0.098 \| good
2025-09-08T23:00:00.000Z	69 \| moderate	19.053 \| fine	84.182 \| fine	52.127 \| good	0.35 \| good	2.101 \| good	0.104 \| good
2025-09-09T00:00:00.000Z	75 \| moderate	22.476 \| fine	98.676 \| fine	49.573 \| good	0.353 \| good	2.858 \| good	0.111 \| good
2025-09-09T01:00:00.000Z	81 \| moderate	25.025 \| fine	108.809 \| fine	47.797 \| good	0.343 \| good	3.805 \| good	0.12 \| good
2025-09-09T02:00:00.000Z	75 \| moderate	21.903 \| fine	96.022 \| fine	46.1 \| good	0.333 \| good	4.752 \| good	0.129 \| good
2025-09-09T03:00:00.000Z	75 \| moderate	22.24 \| fine	97.284 \| fine	44.199 \| good	0.322 \| good	5.699 \| good	0.137 \| good
2025-09-09T04:00:00.000Z	69 \| moderate	18.997 \| fine	83.804 \| fine	40.452 \| good	0.312 \| good	6.08 \| good	0.141 \| good
2025-09-09T05:00:00.000Z	66 \| moderate	17.452 \| fine	77.21 \| fine	40.183 \| good	0.301 \| good	6.46 \| good	0.144 \| good
2025-09-09T06:00:00.000Z	67 \| moderate	17.653 \| fine	78.373 \| fine	40.713 \| good	0.291 \| good	6.841 \| good	0.147 \| good
2025-09-09T07:00:00.000Z	66 \| moderate	17.354 \| fine	76.736 \| fine	38.326 \| good	0.268 \| good	6.257 \| good	0.141 \| good
2025-09-09T08:00:00.000Z	66 \| moderate	16.557 \| fine	73.733 \| fine	38.012 \| good	0.244 \| good	5.674 \| good	0.135 \| good
2025-09-09T09:00:00.000Z	66 \| moderate	16.537 \| fine	72.998 \| fine	36.878 \| good	0.221 \| good	5.09 \| good	0.129 \| good
2025-09-09T10:00:00.000Z	64 \| moderate	15.944 \| fine	71.206 \| fine	35.777 \| good	0.219 \| good	4.632 \| good	0.123 \| good
2025-09-09T11:00:00.000Z	67 \| moderate	17.828 \| fine	78.59 \| fine	33.074 \| good	0.217 \| good	4.174 \| good	0.116 \| good
2025-09-09T12:00:00.000Z	67 \| moderate	17.636 \| fine	77.902 \| fine	33.539 \| good	0.215 \| good	3.716 \| good	0.11 \| good
2025-09-09T13:00:00.000Z	66 \| moderate	16.831 \| fine	74.668 \| fine	31.97 \| good	0.245 \| good	3.974 \| good	0.121 \| good
2025-09-09T14:00:00.000Z	64 \| moderate	16.424 \| fine	72.94 \| fine	31.738 \| good	0.274 \| good	4.232 \| good	0.133 \| good
2025-09-09T15:00:00.000Z	62 \| moderate	15.178 \| fine	67.792 \| fine	35.644 \| good	0.304 \| good	4.49 \| good	0.145 \| good
2025-09-09T16:00:00.000Z	60 \| moderate	13.889 \| fine	62.47 \| fine	41.399 \| good	0.38 \| good	3.41 \| good	0.129 \| good
2025-09-09T17:00:00.000Z	62 \| moderate	14.648 \| fine	65.385 \| fine	45.162 \| good	0.455 \| good	2.331 \| good	0.114 \| good
2025-09-09T18:00:00.000Z	66 \| moderate	16.542 \| fine	73.69 \| fine	49.371 \| good	0.531 \| good	1.251 \| good	0.098 \| good

Live air quality index in Boulder, Colorado today

Major air pollutants in Boulder, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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