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

The PM10 concentration in Boulder, Colorado is 20.022 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 1.044 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 28.673 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 24.302 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 3.508 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)

3.51 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.02 μg/m³

155

255

425

605+

Ozone (O₃)

28.67 ppb

201

201+

Sulfur Dioxide (SO₂)

1.04 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

24.30 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.33 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
2026-10-20T22:00:00.000Z	44 \| good	3.009 \| good	17.033 \| good	46.599 \| good	1.016 \| good	9.905 \| good	0.205 \| good
2026-10-20T23:00:00.000Z	44 \| good	3.01 \| good	18.042 \| good	46.678 \| good	0.884 \| good	10.347 \| good	0.214 \| good
2026-10-21T00:00:00.000Z	42 \| good	3.5 \| good	28.922 \| good	45.001 \| good	0.816 \| good	11.016 \| good	0.193 \| good
2026-10-21T01:00:00.000Z	42 \| good	3.501 \| good	25.958 \| good	44.679 \| good	0.717 \| good	16.854 \| good	0.461 \| good
2026-10-21T02:00:00.000Z	35 \| good	3.305 \| good	19.003 \| good	37.659 \| good	0.936 \| good	12.497 \| good	0.649 \| good
2026-10-21T03:00:00.000Z	31 \| good	1.315 \| good	5.04 \| good	34.437 \| good	0.33 \| good	14.64 \| good	0.207 \| good
2026-10-21T04:00:00.000Z	31 \| good	3.206 \| good	15.033 \| good	32.52 \| good	0.935 \| good	10.655 \| good	0.528 \| good
2026-10-21T05:00:00.000Z	28 \| good	3.205 \| good	12.02 \| good	29.688 \| good	0.773 \| good	14.545 \| good	0.414 \| good
2026-10-21T06:00:00.000Z	28 \| good	3.103 \| good	10.021 \| good	30.46 \| good	0.992 \| good	15.42 \| good	0.465 \| good
2026-10-21T07:00:00.000Z	31 \| good	3.203 \| good	9.03 \| good	32.604 \| good	1.166 \| good	15.454 \| good	0.331 \| good
2026-10-21T08:00:00.000Z	28 \| good	3.302 \| good	8.031 \| good	30.355 \| good	0.953 \| good	12.163 \| good	0.295 \| good
2026-10-21T09:00:00.000Z	30 \| good	3.501 \| good	8.033 \| good	31.66 \| good	0.882 \| good	9.41 \| good	0.264 \| good
2026-10-21T10:00:00.000Z	29 \| good	4.403 \| good	8.042 \| good	31.284 \| good	0.814 \| good	7.706 \| good	0.276 \| good
2026-10-21T11:00:00.000Z	28 \| good	5.005 \| good	9.069 \| good	29.906 \| good	0.779 \| good	6.816 \| good	0.385 \| good
2026-10-21T12:00:00.000Z	28 \| good	5.109 \| good	9.096 \| good	29.625 \| good	0.781 \| good	7.568 \| good	0.444 \| good
2026-10-21T13:00:00.000Z	28 \| good	5.208 \| good	9.069 \| good	29.884 \| good	1.075 \| good	10.2 \| good	0.527 \| good
2026-10-21T14:00:00.000Z	30 \| good	5.3 \| good	10.064 \| good	32.058 \| good	1.571 \| good	12.65 \| good	0.502 \| good
2026-10-21T15:00:00.000Z	31 \| good	5.306 \| good	13.079 \| good	34.118 \| good	1.613 \| good	11.804 \| good	0.493 \| good
2026-10-21T16:00:00.000Z	31 \| good	5.008 \| good	15.064 \| good	32.631 \| good	1.512 \| good	10.162 \| good	0.388 \| good
2026-10-21T17:00:00.000Z	35 \| good	5.208 \| good	21.05 \| good	38.299 \| good	1.147 \| good	13.035 \| good	0.299 \| good
2026-10-21T18:00:00.000Z	31 \| good	5.305 \| good	23.021 \| good	33.708 \| good	1.275 \| good	15.248 \| good	0.299 \| good
2026-10-21T19:00:00.000Z	41 \| good	4.999 \| good	21.995 \| good	44.241 \| good	0.772 \| good	7.934 \| good	0.18 \| good
2026-10-21T20:00:00.000Z	43 \| good	4.304 \| good	21.005 \| good	46.245 \| good	0.654 \| good	7.535 \| good	0.163 \| good
2026-10-21T21:00:00.000Z	44 \| good	4.196 \| good	22.02 \| good	48.065 \| good	0.503 \| good	5.488 \| good	0.13 \| good
2026-10-21T22:00:00.000Z	48 \| good	3.998 \| good	21.977 \| good	51.884 \| good	0.45 \| good	4.606 \| good	0.177 \| good
2026-10-21T23:00:00.000Z	49 \| good	4.101 \| good	25.986 \| good	52.759 \| good	0.357 \| good	5.444 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	43 \| good	4.299 \| good	27.949 \| good	46.442 \| good	0.855 \| good	12.019 \| good	0.261 \| good
2026-10-22T01:00:00.000Z	42 \| good	3.204 \| good	19.002 \| good	45.131 \| good	0.653 \| good	16.479 \| good	0.369 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.506 \| good	13.026 \| good	40.282 \| good	0.295 \| good	14.087 \| good	0.364 \| good
2026-10-22T03:00:00.000Z	40 \| good	2.358 \| good	9.432 \| good	42.703 \| good	0.361 \| good	16.519 \| good	0.228 \| good
2026-10-22T04:00:00.000Z	33 \| good	2.105 \| good	8.071 \| good	35.82 \| good	0.917 \| good	8.878 \| good	0.335 \| good
2026-10-22T05:00:00.000Z	34 \| good	1.904 \| good	7.075 \| good	37.401 \| good	0.77 \| good	7.582 \| good	0.289 \| good
2026-10-22T06:00:00.000Z	33 \| good	1.603 \| good	5.089 \| good	35.754 \| good	0.547 \| good	6.262 \| good	0.193 \| good
2026-10-22T07:00:00.000Z	31 \| good	1.501 \| good	4.028 \| good	33.197 \| good	0.673 \| good	6.428 \| good	0.148 \| good
2026-10-22T08:00:00.000Z	28 \| good	1.302 \| good	3.035 \| good	30.29 \| good	0.579 \| good	6.045 \| good	0.15 \| good
2026-10-22T09:00:00.000Z	27 \| good	1.3 \| good	4.006 \| good	29.175 \| good	0.968 \| good	6.2 \| good	0.123 \| good
2026-10-22T10:00:00.000Z	21 \| good	1.201 \| good	3.009 \| good	23.256 \| good	0.591 \| good	9.048 \| good	0.162 \| good
2026-10-22T11:00:00.000Z	23 \| good	1 \| good	2.019 \| good	25.485 \| good	0.425 \| good	11.176 \| good	0.179 \| good
2026-10-22T12:00:00.000Z	24 \| good	0.904 \| good	2.028 \| good	25.871 \| good	0.55 \| good	17.122 \| good	0.179 \| good
2026-10-22T13:00:00.000Z	24 \| good	1.704 \| good	7.035 \| good	26.068 \| good	0.57 \| good	23.671 \| good	0.357 \| good
2026-10-22T14:00:00.000Z	22 \| good	2.501 \| good	14.992 \| good	23.258 \| good	0.642 \| good	23.29 \| good	0.369 \| good
2026-10-22T15:00:00.000Z	22 \| good	3.198 \| good	23.98 \| good	23.774 \| good	0.886 \| good	15.586 \| good	0.577 \| good
2026-10-22T16:00:00.000Z	29 \| good	3.605 \| good	30.939 \| good	20.468 \| good	1.147 \| good	13.581 \| good	0.476 \| good
2026-10-22T17:00:00.000Z	28 \| good	3.504 \| good	29.949 \| good	22.838 \| good	1.287 \| good	14.834 \| good	0.417 \| good
2026-10-22T18:00:00.000Z	25 \| good	4.197 \| good	26.938 \| good	25.784 \| good	1.118 \| good	12.729 \| good	0.328 \| good
2026-10-22T19:00:00.000Z	28 \| good	3.893 \| good	20.941 \| good	29.506 \| good	0.87 \| good	13.242 \| good	0.312 \| good
2026-10-22T20:00:00.000Z	27 \| good	3.508 \| good	20.022 \| good	28.673 \| good	1.044 \| good	24.302 \| good	0.325 \| good
2026-10-22T21:00:00.000Z	27 \| good	3.508 \| good	20.022 \| good	28.673 \| good	1.044 \| good	24.302 \| good	0.325 \| good
2026-10-22T22:00:00.000Z	38 \| good	0.615 \| good	2.358 \| good	41.458 \| good	0.334 \| good	2.615 \| good	0.097 \| good
2026-10-22T23:00:00.000Z	36 \| good	1.193 \| good	4.421 \| good	39.347 \| good	0.348 \| good	2.961 \| good	0.1 \| good
2026-10-23T00:00:00.000Z	35 \| good	1.107 \| good	4.573 \| good	38.294 \| good	0.383 \| good	7.85 \| good	0.139 \| good
2026-10-23T01:00:00.000Z	28 \| good	1.519 \| good	6.342 \| good	30.187 \| good	0.455 \| good	11.889 \| good	0.171 \| good
2026-10-23T02:00:00.000Z	26 \| good	1.232 \| good	4.839 \| good	28.131 \| good	0.469 \| good	14.912 \| good	0.196 \| good
2026-10-23T03:00:00.000Z	27 \| good	0.869 \| good	3.474 \| good	28.929 \| good	0.446 \| good	17.466 \| good	0.218 \| good
2026-10-23T04:00:00.000Z	28 \| good	0.853 \| good	3.337 \| good	29.68 \| good	0.412 \| good	16.964 \| good	0.223 \| good
2026-10-23T05:00:00.000Z	24 \| good	0.931 \| good	3.685 \| good	26.445 \| good	0.374 \| good	14.838 \| good	0.22 \| good
2026-10-23T06:00:00.000Z	25 \| good	0.924 \| good	3.823 \| good	26.927 \| good	0.314 \| good	12.933 \| good	0.207 \| good
2026-10-23T07:00:00.000Z	24 \| good	0.802 \| good	2.979 \| good	25.606 \| good	0.254 \| good	10.991 \| good	0.186 \| good
2026-10-23T08:00:00.000Z	22 \| good	0.95 \| good	3.823 \| good	23.794 \| good	0.215 \| good	9.133 \| good	0.163 \| good
2026-10-23T09:00:00.000Z	22 \| good	0.81 \| good	3.45 \| good	24.379 \| good	0.186 \| good	6.647 \| good	0.142 \| good
2026-10-23T10:00:00.000Z	22 \| good	1.593 \| good	6.531 \| good	24.25 \| good	0.167 \| good	4.41 \| good	0.127 \| good
2026-10-23T11:00:00.000Z	22 \| good	1.847 \| good	7.723 \| good	23.625 \| good	0.153 \| good	3.083 \| good	0.119 \| good
2026-10-23T12:00:00.000Z	21 \| good	1.468 \| good	5.811 \| good	22.865 \| good	0.143 \| good	2.551 \| good	0.115 \| good
2026-10-23T13:00:00.000Z	23 \| good	1.784 \| good	7.286 \| good	24.717 \| good	0.14 \| good	2.945 \| good	0.119 \| good
2026-10-23T14:00:00.000Z	23 \| good	1.923 \| good	7.83 \| good	25.247 \| good	0.148 \| good	3.916 \| good	0.129 \| good
2026-10-23T15:00:00.000Z	26 \| good	2.148 \| good	8.966 \| good	28.49 \| good	0.148 \| good	3.38 \| good	0.133 \| good
2026-10-23T16:00:00.000Z	31 \| good	1.822 \| good	7.574 \| good	33.307 \| good	0.15 \| good	2.333 \| good	0.125 \| good
2026-10-23T17:00:00.000Z	34 \| good	1.235 \| good	4.767 \| good	36.817 \| good	0.165 \| good	1.48 \| good	0.115 \| good
2026-10-23T18:00:00.000Z	36 \| good	0.765 \| good	2.825 \| good	38.567 \| good	0.143 \| good	0.689 \| good	0.106 \| good
2026-10-23T19:00:00.000Z	37 \| good	0.996 \| good	3.968 \| good	40.38 \| good	0.123 \| good	0.466 \| good	0.102 \| good
2026-10-23T20:00:00.000Z	42 \| good	1.502 \| good	6.002 \| good	44.78 \| good	0.114 \| good	0.424 \| good	0.1 \| good
2026-10-23T21:00:00.000Z	44 \| good	1.068 \| good	4.264 \| good	48.38 \| good	0.11 \| good	0.437 \| good	0.099 \| good
2026-10-23T22:00:00.000Z	45 \| good	1.908 \| good	7.982 \| good	49.149 \| good	0.108 \| good	0.507 \| good	0.098 \| good
2026-10-23T23:00:00.000Z	40 \| good	3.059 \| good	12.964 \| good	42.817 \| good	0.109 \| good	0.678 \| good	0.099 \| good
2026-10-24T00:00:00.000Z	38 \| good	1.459 \| good	5.872 \| good	40.561 \| good	0.149 \| good	4.798 \| good	0.134 \| good
2026-10-24T01:00:00.000Z	34 \| good	1.224 \| good	4.791 \| good	36.936 \| good	0.186 \| good	8.768 \| good	0.166 \| good
2026-10-24T02:00:00.000Z	35 \| good	0.799 \| good	2.877 \| good	38.111 \| good	0.18 \| good	9.189 \| good	0.17 \| good
2026-10-24T03:00:00.000Z	30 \| good	0.776 \| good	2.772 \| good	32.484 \| good	0.156 \| good	7.747 \| good	0.159 \| good
2026-10-24T04:00:00.000Z	28 \| good	0.695 \| good	2.369 \| good	29.613 \| good	0.139 \| good	6.303 \| good	0.149 \| good
2026-10-24T05:00:00.000Z	28 \| good	1.491 \| good	6.068 \| good	30.078 \| good	0.134 \| good	5.865 \| good	0.145 \| good
2026-10-24T06:00:00.000Z	26 \| good	1.917 \| good	7.836 \| good	27.959 \| good	0.122 \| good	5.126 \| good	0.14 \| good
2026-10-24T07:00:00.000Z	28 \| good	1.576 \| good	6.068 \| good	30.318 \| good	0.112 \| good	3.88 \| good	0.131 \| good
2026-10-24T08:00:00.000Z	29 \| good	1.297 \| good	4.954 \| good	31.166 \| good	0.112 \| good	3.604 \| good	0.126 \| good
2026-10-24T09:00:00.000Z	33 \| good	6.306 \| good	27.584 \| good	32.298 \| good	0.114 \| good	4.064 \| good	0.13 \| good
2026-10-24T10:00:00.000Z	62 \| moderate	15.411 \| fine	68.187 \| fine	32.48 \| good	0.163 \| good	5.235 \| good	0.134 \| good
2026-10-24T11:00:00.000Z	73 \| moderate	21.25 \| fine	93.403 \| fine	31.806 \| good	0.221 \| good	6.468 \| good	0.14 \| good
2026-10-24T12:00:00.000Z	92 \| moderate	31.247 \| fine	135.175 \| fine	31.953 \| good	0.254 \| good	6.349 \| good	0.141 \| good
2026-10-24T13:00:00.000Z	97 \| moderate	34.249 \| fine	148.126 \| fine	34.511 \| good	0.267 \| good	6.767 \| good	0.143 \| good
2026-10-24T14:00:00.000Z	102 \| sensitive	36.128 \| moderate	157.66 \| moderate	28.192 \| good	0.298 \| good	7.595 \| good	0.15 \| good
2026-10-24T15:00:00.000Z	88 \| moderate	29.34 \| fine	127.194 \| fine	23.087 \| good	0.331 \| good	3.905 \| good	0.135 \| good
2026-10-24T16:00:00.000Z	73 \| moderate	21.384 \| fine	93.883 \| fine	31.014 \| good	0.396 \| good	2.775 \| good	0.133 \| good
2026-10-24T17:00:00.000Z	62 \| moderate	14.619 \| fine	65.321 \| fine	34.683 \| good	0.45 \| good	2.304 \| good	0.135 \| good
2026-10-24T18:00:00.000Z	44 \| good	7.681 \| good	33.835 \| good	39.272 \| good	0.479 \| good	1.885 \| good	0.134 \| good
2026-10-24T19:00:00.000Z	40 \| good	5.224 \| good	22.545 \| good	43.352 \| good	0.504 \| good	1.72 \| good	0.135 \| good
2026-10-24T20:00:00.000Z	41 \| good	4.574 \| good	19.84 \| good	43.757 \| good	0.529 \| good	1.663 \| good	0.136 \| good
2026-10-24T21:00:00.000Z	42 \| good	4.969 \| good	21.641 \| good	44.988 \| good	0.55 \| good	1.743 \| good	0.138 \| good

Boulder

Get reliable air quality data to drive your business

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

0.32ppm

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 11:00:00 on 2026-10-21.

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

What is the AQI in Boulder, Colorado right now?

As of now, the AQI in Boulder, Colorado is 27, 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 3.508 μg/m³.

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

The PM₁₀ concentration in Boulder, Colorado is 20.022 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 0.325 ppm.

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

Currently, Boulder, Colorado has a sulfur dioxide (SO₂) concentration of 1.044 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 28.673 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 24.302 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	44 \| good	3.009 \| good	17.033 \| good	46.599 \| good	1.016 \| good	9.905 \| good	0.205 \| good
2026-10-20T23:00:00.000Z	44 \| good	3.01 \| good	18.042 \| good	46.678 \| good	0.884 \| good	10.347 \| good	0.214 \| good
2026-10-21T00:00:00.000Z	42 \| good	3.5 \| good	28.922 \| good	45.001 \| good	0.816 \| good	11.016 \| good	0.193 \| good
2026-10-21T01:00:00.000Z	42 \| good	3.501 \| good	25.958 \| good	44.679 \| good	0.717 \| good	16.854 \| good	0.461 \| good
2026-10-21T02:00:00.000Z	35 \| good	3.305 \| good	19.003 \| good	37.659 \| good	0.936 \| good	12.497 \| good	0.649 \| good
2026-10-21T03:00:00.000Z	31 \| good	1.315 \| good	5.04 \| good	34.437 \| good	0.33 \| good	14.64 \| good	0.207 \| good
2026-10-21T04:00:00.000Z	31 \| good	3.206 \| good	15.033 \| good	32.52 \| good	0.935 \| good	10.655 \| good	0.528 \| good
2026-10-21T05:00:00.000Z	28 \| good	3.205 \| good	12.02 \| good	29.688 \| good	0.773 \| good	14.545 \| good	0.414 \| good
2026-10-21T06:00:00.000Z	28 \| good	3.103 \| good	10.021 \| good	30.46 \| good	0.992 \| good	15.42 \| good	0.465 \| good
2026-10-21T07:00:00.000Z	31 \| good	3.203 \| good	9.03 \| good	32.604 \| good	1.166 \| good	15.454 \| good	0.331 \| good
2026-10-21T08:00:00.000Z	28 \| good	3.302 \| good	8.031 \| good	30.355 \| good	0.953 \| good	12.163 \| good	0.295 \| good
2026-10-21T09:00:00.000Z	30 \| good	3.501 \| good	8.033 \| good	31.66 \| good	0.882 \| good	9.41 \| good	0.264 \| good
2026-10-21T10:00:00.000Z	29 \| good	4.403 \| good	8.042 \| good	31.284 \| good	0.814 \| good	7.706 \| good	0.276 \| good
2026-10-21T11:00:00.000Z	28 \| good	5.005 \| good	9.069 \| good	29.906 \| good	0.779 \| good	6.816 \| good	0.385 \| good
2026-10-21T12:00:00.000Z	28 \| good	5.109 \| good	9.096 \| good	29.625 \| good	0.781 \| good	7.568 \| good	0.444 \| good
2026-10-21T13:00:00.000Z	28 \| good	5.208 \| good	9.069 \| good	29.884 \| good	1.075 \| good	10.2 \| good	0.527 \| good
2026-10-21T14:00:00.000Z	30 \| good	5.3 \| good	10.064 \| good	32.058 \| good	1.571 \| good	12.65 \| good	0.502 \| good
2026-10-21T15:00:00.000Z	31 \| good	5.306 \| good	13.079 \| good	34.118 \| good	1.613 \| good	11.804 \| good	0.493 \| good
2026-10-21T16:00:00.000Z	31 \| good	5.008 \| good	15.064 \| good	32.631 \| good	1.512 \| good	10.162 \| good	0.388 \| good
2026-10-21T17:00:00.000Z	35 \| good	5.208 \| good	21.05 \| good	38.299 \| good	1.147 \| good	13.035 \| good	0.299 \| good
2026-10-21T18:00:00.000Z	31 \| good	5.305 \| good	23.021 \| good	33.708 \| good	1.275 \| good	15.248 \| good	0.299 \| good
2026-10-21T19:00:00.000Z	41 \| good	4.999 \| good	21.995 \| good	44.241 \| good	0.772 \| good	7.934 \| good	0.18 \| good
2026-10-21T20:00:00.000Z	43 \| good	4.304 \| good	21.005 \| good	46.245 \| good	0.654 \| good	7.535 \| good	0.163 \| good
2026-10-21T21:00:00.000Z	44 \| good	4.196 \| good	22.02 \| good	48.065 \| good	0.503 \| good	5.488 \| good	0.13 \| good
2026-10-21T22:00:00.000Z	48 \| good	3.998 \| good	21.977 \| good	51.884 \| good	0.45 \| good	4.606 \| good	0.177 \| good
2026-10-21T23:00:00.000Z	49 \| good	4.101 \| good	25.986 \| good	52.759 \| good	0.357 \| good	5.444 \| good	0.197 \| good
2026-10-22T00:00:00.000Z	43 \| good	4.299 \| good	27.949 \| good	46.442 \| good	0.855 \| good	12.019 \| good	0.261 \| good
2026-10-22T01:00:00.000Z	42 \| good	3.204 \| good	19.002 \| good	45.131 \| good	0.653 \| good	16.479 \| good	0.369 \| good
2026-10-22T02:00:00.000Z	37 \| good	2.506 \| good	13.026 \| good	40.282 \| good	0.295 \| good	14.087 \| good	0.364 \| good
2026-10-22T03:00:00.000Z	40 \| good	2.358 \| good	9.432 \| good	42.703 \| good	0.361 \| good	16.519 \| good	0.228 \| good
2026-10-22T04:00:00.000Z	33 \| good	2.105 \| good	8.071 \| good	35.82 \| good	0.917 \| good	8.878 \| good	0.335 \| good
2026-10-22T05:00:00.000Z	34 \| good	1.904 \| good	7.075 \| good	37.401 \| good	0.77 \| good	7.582 \| good	0.289 \| good
2026-10-22T06:00:00.000Z	33 \| good	1.603 \| good	5.089 \| good	35.754 \| good	0.547 \| good	6.262 \| good	0.193 \| good
2026-10-22T07:00:00.000Z	31 \| good	1.501 \| good	4.028 \| good	33.197 \| good	0.673 \| good	6.428 \| good	0.148 \| good
2026-10-22T08:00:00.000Z	28 \| good	1.302 \| good	3.035 \| good	30.29 \| good	0.579 \| good	6.045 \| good	0.15 \| good
2026-10-22T09:00:00.000Z	27 \| good	1.3 \| good	4.006 \| good	29.175 \| good	0.968 \| good	6.2 \| good	0.123 \| good
2026-10-22T10:00:00.000Z	21 \| good	1.201 \| good	3.009 \| good	23.256 \| good	0.591 \| good	9.048 \| good	0.162 \| good
2026-10-22T11:00:00.000Z	23 \| good	1 \| good	2.019 \| good	25.485 \| good	0.425 \| good	11.176 \| good	0.179 \| good
2026-10-22T12:00:00.000Z	24 \| good	0.904 \| good	2.028 \| good	25.871 \| good	0.55 \| good	17.122 \| good	0.179 \| good
2026-10-22T13:00:00.000Z	24 \| good	1.704 \| good	7.035 \| good	26.068 \| good	0.57 \| good	23.671 \| good	0.357 \| good
2026-10-22T14:00:00.000Z	22 \| good	2.501 \| good	14.992 \| good	23.258 \| good	0.642 \| good	23.29 \| good	0.369 \| good
2026-10-22T15:00:00.000Z	22 \| good	3.198 \| good	23.98 \| good	23.774 \| good	0.886 \| good	15.586 \| good	0.577 \| good
2026-10-22T16:00:00.000Z	29 \| good	3.605 \| good	30.939 \| good	20.468 \| good	1.147 \| good	13.581 \| good	0.476 \| good
2026-10-22T17:00:00.000Z	28 \| good	3.504 \| good	29.949 \| good	22.838 \| good	1.287 \| good	14.834 \| good	0.417 \| good
2026-10-22T18:00:00.000Z	25 \| good	4.197 \| good	26.938 \| good	25.784 \| good	1.118 \| good	12.729 \| good	0.328 \| good
2026-10-22T19:00:00.000Z	28 \| good	3.893 \| good	20.941 \| good	29.506 \| good	0.87 \| good	13.242 \| good	0.312 \| good
2026-10-22T20:00:00.000Z	27 \| good	3.508 \| good	20.022 \| good	28.673 \| good	1.044 \| good	24.302 \| good	0.325 \| good
2026-10-22T21:00:00.000Z	27 \| good	3.508 \| good	20.022 \| good	28.673 \| good	1.044 \| good	24.302 \| good	0.325 \| good
2026-10-22T22:00:00.000Z	38 \| good	0.615 \| good	2.358 \| good	41.458 \| good	0.334 \| good	2.615 \| good	0.097 \| good
2026-10-22T23:00:00.000Z	36 \| good	1.193 \| good	4.421 \| good	39.347 \| good	0.348 \| good	2.961 \| good	0.1 \| good
2026-10-23T00:00:00.000Z	35 \| good	1.107 \| good	4.573 \| good	38.294 \| good	0.383 \| good	7.85 \| good	0.139 \| good
2026-10-23T01:00:00.000Z	28 \| good	1.519 \| good	6.342 \| good	30.187 \| good	0.455 \| good	11.889 \| good	0.171 \| good
2026-10-23T02:00:00.000Z	26 \| good	1.232 \| good	4.839 \| good	28.131 \| good	0.469 \| good	14.912 \| good	0.196 \| good
2026-10-23T03:00:00.000Z	27 \| good	0.869 \| good	3.474 \| good	28.929 \| good	0.446 \| good	17.466 \| good	0.218 \| good
2026-10-23T04:00:00.000Z	28 \| good	0.853 \| good	3.337 \| good	29.68 \| good	0.412 \| good	16.964 \| good	0.223 \| good
2026-10-23T05:00:00.000Z	24 \| good	0.931 \| good	3.685 \| good	26.445 \| good	0.374 \| good	14.838 \| good	0.22 \| good
2026-10-23T06:00:00.000Z	25 \| good	0.924 \| good	3.823 \| good	26.927 \| good	0.314 \| good	12.933 \| good	0.207 \| good
2026-10-23T07:00:00.000Z	24 \| good	0.802 \| good	2.979 \| good	25.606 \| good	0.254 \| good	10.991 \| good	0.186 \| good
2026-10-23T08:00:00.000Z	22 \| good	0.95 \| good	3.823 \| good	23.794 \| good	0.215 \| good	9.133 \| good	0.163 \| good
2026-10-23T09:00:00.000Z	22 \| good	0.81 \| good	3.45 \| good	24.379 \| good	0.186 \| good	6.647 \| good	0.142 \| good
2026-10-23T10:00:00.000Z	22 \| good	1.593 \| good	6.531 \| good	24.25 \| good	0.167 \| good	4.41 \| good	0.127 \| good
2026-10-23T11:00:00.000Z	22 \| good	1.847 \| good	7.723 \| good	23.625 \| good	0.153 \| good	3.083 \| good	0.119 \| good
2026-10-23T12:00:00.000Z	21 \| good	1.468 \| good	5.811 \| good	22.865 \| good	0.143 \| good	2.551 \| good	0.115 \| good
2026-10-23T13:00:00.000Z	23 \| good	1.784 \| good	7.286 \| good	24.717 \| good	0.14 \| good	2.945 \| good	0.119 \| good
2026-10-23T14:00:00.000Z	23 \| good	1.923 \| good	7.83 \| good	25.247 \| good	0.148 \| good	3.916 \| good	0.129 \| good
2026-10-23T15:00:00.000Z	26 \| good	2.148 \| good	8.966 \| good	28.49 \| good	0.148 \| good	3.38 \| good	0.133 \| good
2026-10-23T16:00:00.000Z	31 \| good	1.822 \| good	7.574 \| good	33.307 \| good	0.15 \| good	2.333 \| good	0.125 \| good
2026-10-23T17:00:00.000Z	34 \| good	1.235 \| good	4.767 \| good	36.817 \| good	0.165 \| good	1.48 \| good	0.115 \| good
2026-10-23T18:00:00.000Z	36 \| good	0.765 \| good	2.825 \| good	38.567 \| good	0.143 \| good	0.689 \| good	0.106 \| good
2026-10-23T19:00:00.000Z	37 \| good	0.996 \| good	3.968 \| good	40.38 \| good	0.123 \| good	0.466 \| good	0.102 \| good
2026-10-23T20:00:00.000Z	42 \| good	1.502 \| good	6.002 \| good	44.78 \| good	0.114 \| good	0.424 \| good	0.1 \| good
2026-10-23T21:00:00.000Z	44 \| good	1.068 \| good	4.264 \| good	48.38 \| good	0.11 \| good	0.437 \| good	0.099 \| good
2026-10-23T22:00:00.000Z	45 \| good	1.908 \| good	7.982 \| good	49.149 \| good	0.108 \| good	0.507 \| good	0.098 \| good
2026-10-23T23:00:00.000Z	40 \| good	3.059 \| good	12.964 \| good	42.817 \| good	0.109 \| good	0.678 \| good	0.099 \| good
2026-10-24T00:00:00.000Z	38 \| good	1.459 \| good	5.872 \| good	40.561 \| good	0.149 \| good	4.798 \| good	0.134 \| good
2026-10-24T01:00:00.000Z	34 \| good	1.224 \| good	4.791 \| good	36.936 \| good	0.186 \| good	8.768 \| good	0.166 \| good
2026-10-24T02:00:00.000Z	35 \| good	0.799 \| good	2.877 \| good	38.111 \| good	0.18 \| good	9.189 \| good	0.17 \| good
2026-10-24T03:00:00.000Z	30 \| good	0.776 \| good	2.772 \| good	32.484 \| good	0.156 \| good	7.747 \| good	0.159 \| good
2026-10-24T04:00:00.000Z	28 \| good	0.695 \| good	2.369 \| good	29.613 \| good	0.139 \| good	6.303 \| good	0.149 \| good
2026-10-24T05:00:00.000Z	28 \| good	1.491 \| good	6.068 \| good	30.078 \| good	0.134 \| good	5.865 \| good	0.145 \| good
2026-10-24T06:00:00.000Z	26 \| good	1.917 \| good	7.836 \| good	27.959 \| good	0.122 \| good	5.126 \| good	0.14 \| good
2026-10-24T07:00:00.000Z	28 \| good	1.576 \| good	6.068 \| good	30.318 \| good	0.112 \| good	3.88 \| good	0.131 \| good
2026-10-24T08:00:00.000Z	29 \| good	1.297 \| good	4.954 \| good	31.166 \| good	0.112 \| good	3.604 \| good	0.126 \| good
2026-10-24T09:00:00.000Z	33 \| good	6.306 \| good	27.584 \| good	32.298 \| good	0.114 \| good	4.064 \| good	0.13 \| good
2026-10-24T10:00:00.000Z	62 \| moderate	15.411 \| fine	68.187 \| fine	32.48 \| good	0.163 \| good	5.235 \| good	0.134 \| good
2026-10-24T11:00:00.000Z	73 \| moderate	21.25 \| fine	93.403 \| fine	31.806 \| good	0.221 \| good	6.468 \| good	0.14 \| good
2026-10-24T12:00:00.000Z	92 \| moderate	31.247 \| fine	135.175 \| fine	31.953 \| good	0.254 \| good	6.349 \| good	0.141 \| good
2026-10-24T13:00:00.000Z	97 \| moderate	34.249 \| fine	148.126 \| fine	34.511 \| good	0.267 \| good	6.767 \| good	0.143 \| good
2026-10-24T14:00:00.000Z	102 \| sensitive	36.128 \| moderate	157.66 \| moderate	28.192 \| good	0.298 \| good	7.595 \| good	0.15 \| good
2026-10-24T15:00:00.000Z	88 \| moderate	29.34 \| fine	127.194 \| fine	23.087 \| good	0.331 \| good	3.905 \| good	0.135 \| good
2026-10-24T16:00:00.000Z	73 \| moderate	21.384 \| fine	93.883 \| fine	31.014 \| good	0.396 \| good	2.775 \| good	0.133 \| good
2026-10-24T17:00:00.000Z	62 \| moderate	14.619 \| fine	65.321 \| fine	34.683 \| good	0.45 \| good	2.304 \| good	0.135 \| good
2026-10-24T18:00:00.000Z	44 \| good	7.681 \| good	33.835 \| good	39.272 \| good	0.479 \| good	1.885 \| good	0.134 \| good
2026-10-24T19:00:00.000Z	40 \| good	5.224 \| good	22.545 \| good	43.352 \| good	0.504 \| good	1.72 \| good	0.135 \| good
2026-10-24T20:00:00.000Z	41 \| good	4.574 \| good	19.84 \| good	43.757 \| good	0.529 \| good	1.663 \| good	0.136 \| good
2026-10-24T21:00:00.000Z	42 \| good	4.969 \| good	21.641 \| good	44.988 \| good	0.55 \| good	1.743 \| good	0.138 \| 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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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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