Air quality in Colorado

Air quality index (AQI) and PM2.5 air pollution in Colorado

LAST UPDATE (local time)

LIVE AQI CITY RANKING

Real-time Colorado
Most polluted city ranking

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#cityUS AQI
1 Kremmling

110

2 Hot Sulphur Springs

82

3 Florence

75

4 Clifton

73

5 Silverton

72

6 Pagosa Springs

61

7 Granby

57

8 Carbondale

55

9 Greeley

53

10 Commerce City

52

(local time)

SEE WORLD AQI RANKING

Air Quality Data contributor(s)

Station(s) operated by

Contributors

16

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LIVE AQI CITY RANKING

Real-time Colorado
Cleanest city ranking

Tooltip icon
#cityUS AQI
1 Breckenridge

0

2 Cimarron Hills

0

3 Creede

0

4 Meeker

0

5 Snowmass Village

0

6 Walsenburg

0

7 Battlement Mesa

1

8 Black Forest

1

9 Conifer

1

10 Fort Morgan

1

(local time)

SEE WORLD AQI RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
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How to best protect from air pollution?

Reduce your air pollution exposure in Colorado

Colorado air quality data attribution

Contributors 16

Which is the most polluted city in Colorado?

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