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Colorado

United States

2026-04-21 06:00
CAQI (Europe)
Low
Pollutants|Pollens
O3
μg/m³
96.2
PM10
μg/m³
20.4
NO2
μg/m³
20.4
PM2.5
μg/m³
5.6
CO
μg/m³
291.7
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
1℃
38%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 32
Alamosa County
AQI 20
Arapahoe County
AQI 55
Archuleta County
AQI 24
Baca County
AQI 9
Bent County
AQI 18
Boulder County
AQI 39
Broomfield County
AQI 36
Chaffee County
AQI 8
Cheyenne County
AQI 8
Clear Creek County
AQI 44
Conejos County
AQI 20
Costilla County
AQI 8
Crowley County
AQI 13
Custer County
AQI 8
Delta County
AQI 30
Denver County
AQI 34
Dolores County
AQI 20
Douglas County
AQI 47
Eagle County
AQI 12
El Paso County
AQI 45
Elbert County
AQI 36
Fremont County
AQI 20
Garfield County
AQI 27
Gilpin County
AQI 52
Grand County
AQI 7
Gunnison County
AQI 45
Hinsdale County
AQI 15
Huerfano County
AQI 6
Jackson County
AQI 7
Jefferson County
AQI 55
La Plata County
AQI 27
Lake County
AQI 8
Larimer County
AQI 41
Las Animas County
AQI 7
Lincoln County
AQI 7
Logan County
AQI 20
Mesa County
AQI 38
Mineral County
AQI 12
Moffat County
AQI 13
Montezuma County
AQI 37
Montrose County
AQI 30
Morgan County
AQI 16
Otero County
AQI 17
Ouray County
AQI 14
Park County
AQI 7
Phillips County
AQI 19
Pitkin County
AQI 40
Prowers County
AQI 19
Pueblo County
AQI 53
Rio Blanco County
AQI 15
Rio Grande County
AQI 20
Routt County
AQI 10
Saguache County
AQI 10
San Juan County
AQI 14
San Miguel County
AQI 14
Sedgwick County
AQI 18
Summit County
AQI 9
Teller County
AQI 11
Washington County
AQI 16
Weld County
AQI 40
Yuma County
AQI 18
Data Sources
http://www.airnow.gov/

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AQI 26
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AQI 42
Breckenridge
AQI 9
Silverthorne
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Frisco
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Wildernest
AQI 8
Bailey
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Idaho Springs
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Winter Park
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