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

The PM10 concentration in Boulder, Colorado is 18.007 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 0.397 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 47.707 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 2.756 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 3.803 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)

3.80 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.01 μg/m³

155

255

425

605+

Ozone (O₃)

47.71 ppb

201

201+

Sulfur Dioxide (SO₂)

0.40 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.76 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
2026-05-14T11:00:00.000Z	45 \| good	4.099 \| good	20.024 \| good	48.55 \| good	1.171 \| good	15.444 \| good	0.232 \| good
2026-05-14T12:00:00.000Z	42 \| good	4.098 \| good	16.996 \| good	45.005 \| good	0.896 \| good	16.024 \| good	0.245 \| good
2026-05-14T13:00:00.000Z	41 \| good	4.2 \| good	17.019 \| good	44.384 \| good	0.6 \| good	19.078 \| good	0.364 \| good
2026-05-14T14:00:00.000Z	38 \| good	5.797 \| good	40.915 \| good	39.079 \| good	0.798 \| good	16.187 \| good	0.318 \| good
2026-05-14T15:00:00.000Z	42 \| good	6.8 \| good	45.011 \| good	44.686 \| good	0.701 \| good	11.235 \| good	0.265 \| good
2026-05-14T16:00:00.000Z	43 \| good	5.701 \| good	37.973 \| good	45.611 \| good	0.491 \| good	16.986 \| good	0.245 \| good
2026-05-14T17:00:00.000Z	44 \| good	4.907 \| good	32.028 \| good	46.913 \| good	0.407 \| good	8.123 \| good	0.202 \| good
2026-05-14T18:00:00.000Z	43 \| good	4.305 \| good	26.045 \| good	46.486 \| good	0.376 \| good	11.076 \| good	0.202 \| good
2026-05-14T19:00:00.000Z	49 \| good	3.905 \| good	22.038 \| good	53.017 \| good	0.467 \| good	8.179 \| good	0.177 \| good
2026-05-14T20:00:00.000Z	51 \| moderate	3.903 \| good	27.991 \| good	54.571 \| good	0.424 \| good	9.601 \| good	0.177 \| good
2026-05-14T21:00:00.000Z	51 \| moderate	3.998 \| good	28.944 \| good	54.857 \| good	0.381 \| good	10.904 \| good	0.207 \| good
2026-05-14T22:00:00.000Z	58 \| moderate	4.794 \| good	41.878 \| good	57.353 \| fine	0.307 \| good	10.275 \| good	0.207 \| good
2026-05-14T23:00:00.000Z	54 \| moderate	5.308 \| good	46.981 \| good	55.969 \| fine	0.433 \| good	10.207 \| good	0.185 \| good
2026-05-15T00:00:00.000Z	54 \| moderate	5.686 \| good	50.818 \| good	55.792 \| fine	0.495 \| good	3.494 \| good	0.217 \| good
2026-05-15T01:00:00.000Z	58 \| moderate	5.889 \| good	54.219 \| good	57.489 \| fine	1.347 \| good	4.214 \| good	0.16 \| good
2026-05-15T02:00:00.000Z	67 \| moderate	5.596 \| good	48.897 \| good	60.134 \| fine	0.863 \| good	6.846 \| good	0.16 \| good
2026-05-15T03:00:00.000Z	61 \| moderate	5.396 \| good	44.885 \| good	58.447 \| fine	0.646 \| good	6.431 \| good	0.16 \| good
2026-05-15T04:00:00.000Z	58 \| moderate	5.199 \| good	40.958 \| good	56.774 \| fine	0.377 \| good	3.5 \| good	0.128 \| good
2026-05-15T05:00:00.000Z	51 \| moderate	4.898 \| good	35.002 \| good	55.474 \| fine	0.53 \| good	1.98 \| good	0.128 \| good
2026-05-15T06:00:00.000Z	54 \| moderate	4.999 \| good	35.993 \| good	55.789 \| fine	0.531 \| good	3.596 \| good	0.128 \| good
2026-05-15T07:00:00.000Z	46 \| good	4.898 \| good	31.97 \| good	50.34 \| good	0.379 \| good	4.423 \| good	0.157 \| good
2026-05-15T08:00:00.000Z	47 \| good	4.801 \| good	28.992 \| good	51.112 \| good	0.548 \| good	7.371 \| good	0.185 \| good
2026-05-15T09:00:00.000Z	44 \| good	4.701 \| good	26.975 \| good	47.169 \| good	0.576 \| good	8.505 \| good	0.157 \| good
2026-05-15T10:00:00.000Z	44 \| good	4.599 \| good	25.024 \| good	47.931 \| good	0.517 \| good	11.017 \| good	0.157 \| good
2026-05-15T11:00:00.000Z	43 \| good	4.496 \| good	24.998 \| good	46.003 \| good	0.75 \| good	7.749 \| good	0.16 \| good
2026-05-15T12:00:00.000Z	40 \| good	4.401 \| good	26.968 \| good	42.959 \| good	0.763 \| good	11.735 \| good	0.217 \| good
2026-05-15T13:00:00.000Z	46 \| good	4.3 \| good	25.978 \| good	50.333 \| good	0.638 \| good	18.986 \| good	0.261 \| good
2026-05-15T14:00:00.000Z	47 \| good	4.303 \| good	27.987 \| good	50.578 \| good	1.104 \| good	17.004 \| good	0.301 \| good
2026-05-15T15:00:00.000Z	54 \| moderate	4.4 \| good	31.979 \| good	56.074 \| fine	1.803 \| good	9.089 \| good	0.311 \| good
2026-05-15T16:00:00.000Z	49 \| good	4.399 \| good	30.99 \| good	53.205 \| good	1.128 \| good	8.844 \| good	0.204 \| good
2026-05-15T17:00:00.000Z	49 \| good	4.697 \| good	31.948 \| good	53.246 \| good	0.882 \| good	12.883 \| good	0.188 \| good
2026-05-15T18:00:00.000Z	71 \| moderate	4.703 \| good	30.989 \| good	60.793 \| fine	0.607 \| good	8.671 \| good	0.157 \| good
2026-05-15T19:00:00.000Z	87 \| moderate	4.498 \| good	30.97 \| good	65.861 \| fine	0.641 \| good	8.419 \| good	0.16 \| good
2026-05-15T20:00:00.000Z	90 \| moderate	4.393 \| good	31.97 \| good	67.199 \| fine	0.52 \| good	5.812 \| good	0.13 \| good
2026-05-15T21:00:00.000Z	93 \| moderate	4.5 \| good	33.962 \| good	67.826 \| fine	0.428 \| good	6.541 \| good	0.13 \| good
2026-05-15T22:00:00.000Z	97 \| moderate	4.496 \| good	33.925 \| good	68.876 \| fine	0.46 \| good	7.844 \| good	0.163 \| good
2026-05-15T23:00:00.000Z	101 \| sensitive	4.397 \| good	32.074 \| good	71.239 \| moderate	0.456 \| good	5.941 \| good	0.163 \| good
2026-05-16T00:00:00.000Z	77 \| moderate	4.498 \| good	32.961 \| good	62.756 \| fine	0.43 \| good	6.724 \| good	0.222 \| good
2026-05-16T01:00:00.000Z	74 \| moderate	4.596 \| good	32.931 \| good	62.116 \| fine	0.379 \| good	9.342 \| good	0.222 \| good
2026-05-16T02:00:00.000Z	71 \| moderate	4.707 \| good	33.952 \| good	60.912 \| fine	0.397 \| good	10.372 \| good	0.265 \| good
2026-05-16T03:00:00.000Z	77 \| moderate	5.299 \| good	40.92 \| good	62.576 \| fine	0.514 \| good	13.228 \| good	0.299 \| good
2026-05-16T04:00:00.000Z	64 \| moderate	5.3 \| good	37.962 \| good	58.653 \| fine	0.366 \| good	11.818 \| good	0.315 \| good
2026-05-16T05:00:00.000Z	47 \| good	5.204 \| good	36.943 \| good	51.086 \| good	0.544 \| good	18.512 \| good	0.425 \| good
2026-05-16T06:00:00.000Z	44 \| good	5.103 \| good	32.01 \| good	47.15 \| good	0.575 \| good	22.178 \| good	0.35 \| good
2026-05-16T07:00:00.000Z	41 \| good	4.704 \| good	26.975 \| good	44.318 \| good	0.396 \| good	8.87 \| good	0.366 \| good
2026-05-16T08:00:00.000Z	46 \| good	4.304 \| good	22.98 \| good	49.917 \| good	0.51 \| good	4.95 \| good	0.248 \| good
2026-05-16T09:00:00.000Z	47 \| good	3.905 \| good	19.986 \| good	51.362 \| good	0.428 \| good	2.791 \| good	0.255 \| good
2026-05-16T10:00:00.000Z	44 \| good	3.803 \| good	18.007 \| good	47.707 \| good	0.397 \| good	2.756 \| good	0.222 \| good
2026-05-16T10:00:00.000Z	44 \| good	3.803 \| good	18.007 \| good	47.707 \| good	0.397 \| good	2.756 \| good	0.222 \| good
2026-05-16T11:00:00.000Z	42 \| good	4.66 \| good	20.406 \| good	44.764 \| good	0.12 \| good	4.29 \| good	0.144 \| good
2026-05-16T12:00:00.000Z	39 \| good	5.903 \| good	26.373 \| good	42.416 \| good	0.109 \| good	4.6 \| good	0.147 \| good
2026-05-16T13:00:00.000Z	44 \| good	7.95 \| good	34.928 \| good	45.676 \| good	0.099 \| good	3.794 \| good	0.148 \| good
2026-05-16T14:00:00.000Z	47 \| good	8.452 \| good	36.899 \| good	50.988 \| good	0.169 \| good	2.16 \| good	0.125 \| good
2026-05-16T15:00:00.000Z	50 \| good	9.058 \| good	40.103 \| good	53.918 \| good	0.274 \| good	1.406 \| good	0.116 \| good
2026-05-16T16:00:00.000Z	49 \| good	8.637 \| good	37.816 \| good	53.252 \| good	0.306 \| good	1.127 \| good	0.115 \| good
2026-05-16T17:00:00.000Z	50 \| good	8.292 \| good	36.48 \| good	54.343 \| good	0.319 \| good	0.932 \| good	0.116 \| good
2026-05-16T18:00:00.000Z	58 \| moderate	6.423 \| good	28.246 \| good	57.126 \| fine	0.324 \| good	0.807 \| good	0.117 \| good
2026-05-16T19:00:00.000Z	64 \| moderate	3.073 \| good	13.147 \| good	58.511 \| fine	0.32 \| good	0.812 \| good	0.117 \| good
2026-05-16T20:00:00.000Z	77 \| moderate	2.266 \| good	9.556 \| good	63.118 \| fine	0.296 \| good	0.954 \| good	0.119 \| good
2026-05-16T21:00:00.000Z	80 \| moderate	1.941 \| good	7.993 \| good	63.744 \| fine	0.279 \| good	1 \| good	0.12 \| good
2026-05-16T22:00:00.000Z	87 \| moderate	3.399 \| good	14.651 \| good	66.47 \| fine	0.298 \| good	1.039 \| good	0.122 \| good
2026-05-16T23:00:00.000Z	71 \| moderate	2.947 \| good	12.79 \| good	60.612 \| fine	0.322 \| good	1.257 \| good	0.123 \| good
2026-05-17T00:00:00.000Z	87 \| moderate	10.432 \| good	46.106 \| good	66.434 \| fine	0.331 \| good	1.631 \| good	0.126 \| good
2026-05-17T01:00:00.000Z	84 \| moderate	9.075 \| good	40.165 \| good	65.07 \| fine	0.325 \| good	2.488 \| good	0.134 \| good
2026-05-17T02:00:00.000Z	71 \| moderate	6.963 \| good	30.93 \| good	60.568 \| fine	0.292 \| good	4.714 \| good	0.15 \| good
2026-05-17T03:00:00.000Z	61 \| moderate	12.899 \| fine	58.016 \| fine	57.968 \| fine	0.265 \| good	6.084 \| good	0.16 \| good
2026-05-17T04:00:00.000Z	67 \| moderate	18.461 \| fine	81.176 \| fine	55.654 \| fine	0.248 \| good	7.653 \| good	0.173 \| good
2026-05-17T05:00:00.000Z	81 \| moderate	24.917 \| fine	109.094 \| fine	54.863 \| good	0.215 \| good	9.279 \| good	0.189 \| good
2026-05-17T06:00:00.000Z	90 \| moderate	30.137 \| fine	131.135 \| fine	54.863 \| good	0.166 \| good	8.687 \| good	0.191 \| good
2026-05-17T07:00:00.000Z	82 \| moderate	25.721 \| fine	112.219 \| fine	51.581 \| good	0.126 \| good	7.023 \| good	0.183 \| good
2026-05-17T08:00:00.000Z	84 \| moderate	26.848 \| fine	117.273 \| fine	48.703 \| good	0.107 \| good	4.821 \| good	0.165 \| good
2026-05-17T09:00:00.000Z	92 \| moderate	31.435 \| fine	136.905 \| fine	47.708 \| good	0.085 \| good	3.785 \| good	0.155 \| good
2026-05-17T10:00:00.000Z	94 \| moderate	32.023 \| fine	138.964 \| fine	45.293 \| good	0.07 \| good	3.509 \| good	0.15 \| good
2026-05-17T11:00:00.000Z	90 \| moderate	29.836 \| fine	129.162 \| fine	43.039 \| good	0.068 \| good	3.483 \| good	0.147 \| good
2026-05-17T12:00:00.000Z	79 \| moderate	24.157 \| fine	105.675 \| fine	44.991 \| good	0.074 \| good	3.654 \| good	0.146 \| good
2026-05-17T13:00:00.000Z	60 \| moderate	13.72 \| fine	61.059 \| fine	49.889 \| good	0.078 \| good	3.073 \| good	0.144 \| good
2026-05-17T14:00:00.000Z	56 \| moderate	11.56 \| good	51.51 \| good	53.49 \| good	0.096 \| good	2.134 \| good	0.134 \| good
2026-05-17T15:00:00.000Z	54 \| moderate	11.448 \| good	50.562 \| good	55.253 \| fine	0.113 \| good	1.058 \| good	0.118 \| good
2026-05-17T16:00:00.000Z	61 \| moderate	9.027 \| good	39.964 \| good	58.325 \| fine	0.109 \| good	0.608 \| good	0.112 \| good
2026-05-17T17:00:00.000Z	58 \| moderate	3.752 \| good	16.263 \| good	57.271 \| fine	0.116 \| good	0.42 \| good	0.109 \| good
2026-05-17T18:00:00.000Z	64 \| moderate	2.528 \| good	10.669 \| good	58.658 \| fine	0.124 \| good	0.369 \| good	0.107 \| good
2026-05-17T19:00:00.000Z	64 \| moderate	3.609 \| good	15.731 \| good	58.631 \| fine	0.126 \| good	0.384 \| good	0.107 \| good
2026-05-17T20:00:00.000Z	80 \| moderate	2.175 \| good	8.72 \| good	63.677 \| fine	0.121 \| good	0.414 \| good	0.106 \| good
2026-05-17T21:00:00.000Z	58 \| moderate	1.266 \| good	5.117 \| good	57.421 \| fine	0.122 \| good	0.548 \| good	0.106 \| good
2026-05-17T22:00:00.000Z	49 \| good	0.816 \| good	2.865 \| good	52.636 \| good	0.147 \| good	0.89 \| good	0.109 \| good
2026-05-17T23:00:00.000Z	48 \| good	0.951 \| good	3.728 \| good	52.496 \| good	0.16 \| good	1.162 \| good	0.111 \| good
2026-05-18T00:00:00.000Z	50 \| good	4.848 \| good	20.99 \| good	53.777 \| good	0.16 \| good	1.328 \| good	0.112 \| good
2026-05-18T01:00:00.000Z	46 \| good	3.824 \| good	16.892 \| good	49.755 \| good	0.164 \| good	1.86 \| good	0.116 \| good
2026-05-18T02:00:00.000Z	43 \| good	0.75 \| good	2.65 \| good	45.708 \| good	0.155 \| good	2.366 \| good	0.12 \| good
2026-05-18T03:00:00.000Z	41 \| good	1.516 \| good	6.419 \| good	44.271 \| good	0.154 \| good	3.455 \| good	0.128 \| good
2026-05-18T04:00:00.000Z	40 \| good	1.573 \| good	6.242 \| good	43.188 \| good	0.169 \| good	5.148 \| good	0.141 \| good
2026-05-18T05:00:00.000Z	40 \| good	1.153 \| good	4.638 \| good	43.101 \| good	0.184 \| good	7.03 \| good	0.157 \| good
2026-05-18T06:00:00.000Z	33 \| good	4.621 \| good	5.872 \| good	36.376 \| good	0.19 \| good	7.36 \| good	0.162 \| good
2026-05-18T07:00:00.000Z	39 \| good	2.44 \| good	10.002 \| good	42.179 \| good	0.178 \| good	5.737 \| good	0.151 \| good
2026-05-18T08:00:00.000Z	39 \| good	1.994 \| good	8.254 \| good	42.125 \| good	0.168 \| good	4.029 \| good	0.136 \| good
2026-05-18T09:00:00.000Z	39 \| good	3.598 \| good	15.719 \| good	42.332 \| good	0.168 \| good	2.947 \| good	0.125 \| good
2026-05-18T10:00:00.000Z	40 \| good	4.927 \| good	21.35 \| good	43.482 \| good	0.159 \| good	2.62 \| good	0.122 \| good

Boulder

Get reliable air quality data to drive your business

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

0.25ppm

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 11:00:00 on 2026-05-15.

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 12:00:00 on 2026-05-15.

What is the AQI in Boulder, Colorado right now?

As of now, the AQI in Boulder, Colorado is 44, 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 3.803 μg/m³.

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

The PM₁₀ concentration in Boulder, Colorado is 18.007 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 0.222 ppm.

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

Currently, Boulder, Colorado has a sulfur dioxide (SO₂) concentration of 0.397 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 47.707 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 2.756 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-05-14T11:00:00.000Z	45 \| good	4.099 \| good	20.024 \| good	48.55 \| good	1.171 \| good	15.444 \| good	0.232 \| good
2026-05-14T12:00:00.000Z	42 \| good	4.098 \| good	16.996 \| good	45.005 \| good	0.896 \| good	16.024 \| good	0.245 \| good
2026-05-14T13:00:00.000Z	41 \| good	4.2 \| good	17.019 \| good	44.384 \| good	0.6 \| good	19.078 \| good	0.364 \| good
2026-05-14T14:00:00.000Z	38 \| good	5.797 \| good	40.915 \| good	39.079 \| good	0.798 \| good	16.187 \| good	0.318 \| good
2026-05-14T15:00:00.000Z	42 \| good	6.8 \| good	45.011 \| good	44.686 \| good	0.701 \| good	11.235 \| good	0.265 \| good
2026-05-14T16:00:00.000Z	43 \| good	5.701 \| good	37.973 \| good	45.611 \| good	0.491 \| good	16.986 \| good	0.245 \| good
2026-05-14T17:00:00.000Z	44 \| good	4.907 \| good	32.028 \| good	46.913 \| good	0.407 \| good	8.123 \| good	0.202 \| good
2026-05-14T18:00:00.000Z	43 \| good	4.305 \| good	26.045 \| good	46.486 \| good	0.376 \| good	11.076 \| good	0.202 \| good
2026-05-14T19:00:00.000Z	49 \| good	3.905 \| good	22.038 \| good	53.017 \| good	0.467 \| good	8.179 \| good	0.177 \| good
2026-05-14T20:00:00.000Z	51 \| moderate	3.903 \| good	27.991 \| good	54.571 \| good	0.424 \| good	9.601 \| good	0.177 \| good
2026-05-14T21:00:00.000Z	51 \| moderate	3.998 \| good	28.944 \| good	54.857 \| good	0.381 \| good	10.904 \| good	0.207 \| good
2026-05-14T22:00:00.000Z	58 \| moderate	4.794 \| good	41.878 \| good	57.353 \| fine	0.307 \| good	10.275 \| good	0.207 \| good
2026-05-14T23:00:00.000Z	54 \| moderate	5.308 \| good	46.981 \| good	55.969 \| fine	0.433 \| good	10.207 \| good	0.185 \| good
2026-05-15T00:00:00.000Z	54 \| moderate	5.686 \| good	50.818 \| good	55.792 \| fine	0.495 \| good	3.494 \| good	0.217 \| good
2026-05-15T01:00:00.000Z	58 \| moderate	5.889 \| good	54.219 \| good	57.489 \| fine	1.347 \| good	4.214 \| good	0.16 \| good
2026-05-15T02:00:00.000Z	67 \| moderate	5.596 \| good	48.897 \| good	60.134 \| fine	0.863 \| good	6.846 \| good	0.16 \| good
2026-05-15T03:00:00.000Z	61 \| moderate	5.396 \| good	44.885 \| good	58.447 \| fine	0.646 \| good	6.431 \| good	0.16 \| good
2026-05-15T04:00:00.000Z	58 \| moderate	5.199 \| good	40.958 \| good	56.774 \| fine	0.377 \| good	3.5 \| good	0.128 \| good
2026-05-15T05:00:00.000Z	51 \| moderate	4.898 \| good	35.002 \| good	55.474 \| fine	0.53 \| good	1.98 \| good	0.128 \| good
2026-05-15T06:00:00.000Z	54 \| moderate	4.999 \| good	35.993 \| good	55.789 \| fine	0.531 \| good	3.596 \| good	0.128 \| good
2026-05-15T07:00:00.000Z	46 \| good	4.898 \| good	31.97 \| good	50.34 \| good	0.379 \| good	4.423 \| good	0.157 \| good
2026-05-15T08:00:00.000Z	47 \| good	4.801 \| good	28.992 \| good	51.112 \| good	0.548 \| good	7.371 \| good	0.185 \| good
2026-05-15T09:00:00.000Z	44 \| good	4.701 \| good	26.975 \| good	47.169 \| good	0.576 \| good	8.505 \| good	0.157 \| good
2026-05-15T10:00:00.000Z	44 \| good	4.599 \| good	25.024 \| good	47.931 \| good	0.517 \| good	11.017 \| good	0.157 \| good
2026-05-15T11:00:00.000Z	43 \| good	4.496 \| good	24.998 \| good	46.003 \| good	0.75 \| good	7.749 \| good	0.16 \| good
2026-05-15T12:00:00.000Z	40 \| good	4.401 \| good	26.968 \| good	42.959 \| good	0.763 \| good	11.735 \| good	0.217 \| good
2026-05-15T13:00:00.000Z	46 \| good	4.3 \| good	25.978 \| good	50.333 \| good	0.638 \| good	18.986 \| good	0.261 \| good
2026-05-15T14:00:00.000Z	47 \| good	4.303 \| good	27.987 \| good	50.578 \| good	1.104 \| good	17.004 \| good	0.301 \| good
2026-05-15T15:00:00.000Z	54 \| moderate	4.4 \| good	31.979 \| good	56.074 \| fine	1.803 \| good	9.089 \| good	0.311 \| good
2026-05-15T16:00:00.000Z	49 \| good	4.399 \| good	30.99 \| good	53.205 \| good	1.128 \| good	8.844 \| good	0.204 \| good
2026-05-15T17:00:00.000Z	49 \| good	4.697 \| good	31.948 \| good	53.246 \| good	0.882 \| good	12.883 \| good	0.188 \| good
2026-05-15T18:00:00.000Z	71 \| moderate	4.703 \| good	30.989 \| good	60.793 \| fine	0.607 \| good	8.671 \| good	0.157 \| good
2026-05-15T19:00:00.000Z	87 \| moderate	4.498 \| good	30.97 \| good	65.861 \| fine	0.641 \| good	8.419 \| good	0.16 \| good
2026-05-15T20:00:00.000Z	90 \| moderate	4.393 \| good	31.97 \| good	67.199 \| fine	0.52 \| good	5.812 \| good	0.13 \| good
2026-05-15T21:00:00.000Z	93 \| moderate	4.5 \| good	33.962 \| good	67.826 \| fine	0.428 \| good	6.541 \| good	0.13 \| good
2026-05-15T22:00:00.000Z	97 \| moderate	4.496 \| good	33.925 \| good	68.876 \| fine	0.46 \| good	7.844 \| good	0.163 \| good
2026-05-15T23:00:00.000Z	101 \| sensitive	4.397 \| good	32.074 \| good	71.239 \| moderate	0.456 \| good	5.941 \| good	0.163 \| good
2026-05-16T00:00:00.000Z	77 \| moderate	4.498 \| good	32.961 \| good	62.756 \| fine	0.43 \| good	6.724 \| good	0.222 \| good
2026-05-16T01:00:00.000Z	74 \| moderate	4.596 \| good	32.931 \| good	62.116 \| fine	0.379 \| good	9.342 \| good	0.222 \| good
2026-05-16T02:00:00.000Z	71 \| moderate	4.707 \| good	33.952 \| good	60.912 \| fine	0.397 \| good	10.372 \| good	0.265 \| good
2026-05-16T03:00:00.000Z	77 \| moderate	5.299 \| good	40.92 \| good	62.576 \| fine	0.514 \| good	13.228 \| good	0.299 \| good
2026-05-16T04:00:00.000Z	64 \| moderate	5.3 \| good	37.962 \| good	58.653 \| fine	0.366 \| good	11.818 \| good	0.315 \| good
2026-05-16T05:00:00.000Z	47 \| good	5.204 \| good	36.943 \| good	51.086 \| good	0.544 \| good	18.512 \| good	0.425 \| good
2026-05-16T06:00:00.000Z	44 \| good	5.103 \| good	32.01 \| good	47.15 \| good	0.575 \| good	22.178 \| good	0.35 \| good
2026-05-16T07:00:00.000Z	41 \| good	4.704 \| good	26.975 \| good	44.318 \| good	0.396 \| good	8.87 \| good	0.366 \| good
2026-05-16T08:00:00.000Z	46 \| good	4.304 \| good	22.98 \| good	49.917 \| good	0.51 \| good	4.95 \| good	0.248 \| good
2026-05-16T09:00:00.000Z	47 \| good	3.905 \| good	19.986 \| good	51.362 \| good	0.428 \| good	2.791 \| good	0.255 \| good
2026-05-16T10:00:00.000Z	44 \| good	3.803 \| good	18.007 \| good	47.707 \| good	0.397 \| good	2.756 \| good	0.222 \| good
2026-05-16T10:00:00.000Z	44 \| good	3.803 \| good	18.007 \| good	47.707 \| good	0.397 \| good	2.756 \| good	0.222 \| good
2026-05-16T11:00:00.000Z	42 \| good	4.66 \| good	20.406 \| good	44.764 \| good	0.12 \| good	4.29 \| good	0.144 \| good
2026-05-16T12:00:00.000Z	39 \| good	5.903 \| good	26.373 \| good	42.416 \| good	0.109 \| good	4.6 \| good	0.147 \| good
2026-05-16T13:00:00.000Z	44 \| good	7.95 \| good	34.928 \| good	45.676 \| good	0.099 \| good	3.794 \| good	0.148 \| good
2026-05-16T14:00:00.000Z	47 \| good	8.452 \| good	36.899 \| good	50.988 \| good	0.169 \| good	2.16 \| good	0.125 \| good
2026-05-16T15:00:00.000Z	50 \| good	9.058 \| good	40.103 \| good	53.918 \| good	0.274 \| good	1.406 \| good	0.116 \| good
2026-05-16T16:00:00.000Z	49 \| good	8.637 \| good	37.816 \| good	53.252 \| good	0.306 \| good	1.127 \| good	0.115 \| good
2026-05-16T17:00:00.000Z	50 \| good	8.292 \| good	36.48 \| good	54.343 \| good	0.319 \| good	0.932 \| good	0.116 \| good
2026-05-16T18:00:00.000Z	58 \| moderate	6.423 \| good	28.246 \| good	57.126 \| fine	0.324 \| good	0.807 \| good	0.117 \| good
2026-05-16T19:00:00.000Z	64 \| moderate	3.073 \| good	13.147 \| good	58.511 \| fine	0.32 \| good	0.812 \| good	0.117 \| good
2026-05-16T20:00:00.000Z	77 \| moderate	2.266 \| good	9.556 \| good	63.118 \| fine	0.296 \| good	0.954 \| good	0.119 \| good
2026-05-16T21:00:00.000Z	80 \| moderate	1.941 \| good	7.993 \| good	63.744 \| fine	0.279 \| good	1 \| good	0.12 \| good
2026-05-16T22:00:00.000Z	87 \| moderate	3.399 \| good	14.651 \| good	66.47 \| fine	0.298 \| good	1.039 \| good	0.122 \| good
2026-05-16T23:00:00.000Z	71 \| moderate	2.947 \| good	12.79 \| good	60.612 \| fine	0.322 \| good	1.257 \| good	0.123 \| good
2026-05-17T00:00:00.000Z	87 \| moderate	10.432 \| good	46.106 \| good	66.434 \| fine	0.331 \| good	1.631 \| good	0.126 \| good
2026-05-17T01:00:00.000Z	84 \| moderate	9.075 \| good	40.165 \| good	65.07 \| fine	0.325 \| good	2.488 \| good	0.134 \| good
2026-05-17T02:00:00.000Z	71 \| moderate	6.963 \| good	30.93 \| good	60.568 \| fine	0.292 \| good	4.714 \| good	0.15 \| good
2026-05-17T03:00:00.000Z	61 \| moderate	12.899 \| fine	58.016 \| fine	57.968 \| fine	0.265 \| good	6.084 \| good	0.16 \| good
2026-05-17T04:00:00.000Z	67 \| moderate	18.461 \| fine	81.176 \| fine	55.654 \| fine	0.248 \| good	7.653 \| good	0.173 \| good
2026-05-17T05:00:00.000Z	81 \| moderate	24.917 \| fine	109.094 \| fine	54.863 \| good	0.215 \| good	9.279 \| good	0.189 \| good
2026-05-17T06:00:00.000Z	90 \| moderate	30.137 \| fine	131.135 \| fine	54.863 \| good	0.166 \| good	8.687 \| good	0.191 \| good
2026-05-17T07:00:00.000Z	82 \| moderate	25.721 \| fine	112.219 \| fine	51.581 \| good	0.126 \| good	7.023 \| good	0.183 \| good
2026-05-17T08:00:00.000Z	84 \| moderate	26.848 \| fine	117.273 \| fine	48.703 \| good	0.107 \| good	4.821 \| good	0.165 \| good
2026-05-17T09:00:00.000Z	92 \| moderate	31.435 \| fine	136.905 \| fine	47.708 \| good	0.085 \| good	3.785 \| good	0.155 \| good
2026-05-17T10:00:00.000Z	94 \| moderate	32.023 \| fine	138.964 \| fine	45.293 \| good	0.07 \| good	3.509 \| good	0.15 \| good
2026-05-17T11:00:00.000Z	90 \| moderate	29.836 \| fine	129.162 \| fine	43.039 \| good	0.068 \| good	3.483 \| good	0.147 \| good
2026-05-17T12:00:00.000Z	79 \| moderate	24.157 \| fine	105.675 \| fine	44.991 \| good	0.074 \| good	3.654 \| good	0.146 \| good
2026-05-17T13:00:00.000Z	60 \| moderate	13.72 \| fine	61.059 \| fine	49.889 \| good	0.078 \| good	3.073 \| good	0.144 \| good
2026-05-17T14:00:00.000Z	56 \| moderate	11.56 \| good	51.51 \| good	53.49 \| good	0.096 \| good	2.134 \| good	0.134 \| good
2026-05-17T15:00:00.000Z	54 \| moderate	11.448 \| good	50.562 \| good	55.253 \| fine	0.113 \| good	1.058 \| good	0.118 \| good
2026-05-17T16:00:00.000Z	61 \| moderate	9.027 \| good	39.964 \| good	58.325 \| fine	0.109 \| good	0.608 \| good	0.112 \| good
2026-05-17T17:00:00.000Z	58 \| moderate	3.752 \| good	16.263 \| good	57.271 \| fine	0.116 \| good	0.42 \| good	0.109 \| good
2026-05-17T18:00:00.000Z	64 \| moderate	2.528 \| good	10.669 \| good	58.658 \| fine	0.124 \| good	0.369 \| good	0.107 \| good
2026-05-17T19:00:00.000Z	64 \| moderate	3.609 \| good	15.731 \| good	58.631 \| fine	0.126 \| good	0.384 \| good	0.107 \| good
2026-05-17T20:00:00.000Z	80 \| moderate	2.175 \| good	8.72 \| good	63.677 \| fine	0.121 \| good	0.414 \| good	0.106 \| good
2026-05-17T21:00:00.000Z	58 \| moderate	1.266 \| good	5.117 \| good	57.421 \| fine	0.122 \| good	0.548 \| good	0.106 \| good
2026-05-17T22:00:00.000Z	49 \| good	0.816 \| good	2.865 \| good	52.636 \| good	0.147 \| good	0.89 \| good	0.109 \| good
2026-05-17T23:00:00.000Z	48 \| good	0.951 \| good	3.728 \| good	52.496 \| good	0.16 \| good	1.162 \| good	0.111 \| good
2026-05-18T00:00:00.000Z	50 \| good	4.848 \| good	20.99 \| good	53.777 \| good	0.16 \| good	1.328 \| good	0.112 \| good
2026-05-18T01:00:00.000Z	46 \| good	3.824 \| good	16.892 \| good	49.755 \| good	0.164 \| good	1.86 \| good	0.116 \| good
2026-05-18T02:00:00.000Z	43 \| good	0.75 \| good	2.65 \| good	45.708 \| good	0.155 \| good	2.366 \| good	0.12 \| good
2026-05-18T03:00:00.000Z	41 \| good	1.516 \| good	6.419 \| good	44.271 \| good	0.154 \| good	3.455 \| good	0.128 \| good
2026-05-18T04:00:00.000Z	40 \| good	1.573 \| good	6.242 \| good	43.188 \| good	0.169 \| good	5.148 \| good	0.141 \| good
2026-05-18T05:00:00.000Z	40 \| good	1.153 \| good	4.638 \| good	43.101 \| good	0.184 \| good	7.03 \| good	0.157 \| good
2026-05-18T06:00:00.000Z	33 \| good	4.621 \| good	5.872 \| good	36.376 \| good	0.19 \| good	7.36 \| good	0.162 \| good
2026-05-18T07:00:00.000Z	39 \| good	2.44 \| good	10.002 \| good	42.179 \| good	0.178 \| good	5.737 \| good	0.151 \| good
2026-05-18T08:00:00.000Z	39 \| good	1.994 \| good	8.254 \| good	42.125 \| good	0.168 \| good	4.029 \| good	0.136 \| good
2026-05-18T09:00:00.000Z	39 \| good	3.598 \| good	15.719 \| good	42.332 \| good	0.168 \| good	2.947 \| good	0.125 \| good
2026-05-18T10:00:00.000Z	40 \| good	4.927 \| good	21.35 \| good	43.482 \| good	0.159 \| good	2.62 \| good	0.122 \| 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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