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Colorado

United States

2026-06-21 10:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
6.4
O3
μg/m³
69.8
PM10
μg/m³
22.5
NO2
μg/m³
10.2
CO
μg/m³
229.2
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
5℃
44%
9 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 43
Alamosa County
AQI 24
Arapahoe County
AQI 52
Archuleta County
AQI 26
Baca County
AQI 21
Bent County
AQI 43
Boulder County
AQI 46
Broomfield County
AQI 43
Chaffee County
AQI 14
Cheyenne County
AQI 51
Clear Creek County
AQI 32
Conejos County
AQI 29
Costilla County
AQI 12
Crowley County
AQI 29
Custer County
AQI 11
Delta County
AQI 20
Denver County
AQI 53
Dolores County
AQI 14
Douglas County
AQI 54
Eagle County
AQI 27
El Paso County
AQI 51
Elbert County
AQI 31
Fremont County
AQI 24
Garfield County
AQI 21
Gilpin County
AQI 37
Grand County
AQI 27
Gunnison County
AQI 44
Hinsdale County
AQI 15
Huerfano County
AQI 9
Jackson County
AQI 35
Jefferson County
AQI 49
La Plata County
AQI 32
Lake County
AQI 20
Larimer County
AQI 51
Las Animas County
AQI 9
Lincoln County
AQI 43
Logan County
AQI 30
Mesa County
AQI 44
Mineral County
AQI 13
Moffat County
AQI 37
Montezuma County
AQI 41
Montrose County
AQI 20
Morgan County
AQI 27
Otero County
AQI 30
Ouray County
AQI 16
Park County
AQI 16
Phillips County
AQI 32
Pitkin County
AQI 42
Prowers County
AQI 16
Pueblo County
AQI 36
Rio Blanco County
AQI 38
Rio Grande County
AQI 29
Routt County
AQI 68
Saguache County
AQI 13
San Juan County
AQI 16
San Miguel County
AQI 15
Sedgwick County
AQI 29
Summit County
AQI 24
Teller County
AQI 50
Washington County
AQI 40
Weld County
AQI 51
Yuma County
AQI 32
Data Sources
http://www.airnow.gov/

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AQI 26
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AQI 32
Breckenridge
AQI 25
Silverthorne
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Frisco
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Wildernest
AQI 25
Bailey
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Idaho Springs
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Winter Park
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