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  3. Colorado

Colorado

United States

2026-06-01 14:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
80.9
PM2.5
μg/m³
4.9
PM10
μg/m³
26.5
NO2
μg/m³
19
CO
μg/m³
354.2
SO2
μg/m³
1.9
Weather
  • ℃
  • ℉
5℃
55%
5 kph
2 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 37
Alamosa County
AQI 32
Arapahoe County
AQI 43
Archuleta County
AQI 36
Baca County
AQI 38
Bent County
AQI 51
Boulder County
AQI 32
Broomfield County
AQI 38
Chaffee County
AQI 25
Cheyenne County
AQI 49
Clear Creek County
AQI 33
Conejos County
AQI 32
Costilla County
AQI 23
Crowley County
AQI 51
Custer County
AQI 29
Delta County
AQI 25
Denver County
AQI 32
Dolores County
AQI 14
Douglas County
AQI 36
Eagle County
AQI 28
El Paso County
AQI 40
Elbert County
AQI 38
Fremont County
AQI 44
Garfield County
AQI 28
Gilpin County
AQI 40
Grand County
AQI 34
Gunnison County
AQI 35
Hinsdale County
AQI 19
Huerfano County
AQI 36
Jackson County
AQI 29
Jefferson County
AQI 42
La Plata County
AQI 35
Lake County
AQI 27
Larimer County
AQI 30
Las Animas County
AQI 39
Lincoln County
AQI 50
Logan County
AQI 24
Mesa County
AQI 38
Mineral County
AQI 15
Moffat County
AQI 29
Montezuma County
AQI 40
Montrose County
AQI 25
Morgan County
AQI 25
Otero County
AQI 51
Ouray County
AQI 28
Park County
AQI 36
Phillips County
AQI 26
Pitkin County
AQI 34
Prowers County
AQI 55
Pueblo County
AQI 40
Rio Blanco County
AQI 35
Rio Grande County
AQI 32
Routt County
AQI 40
Saguache County
AQI 22
San Juan County
AQI 28
San Miguel County
AQI 28
Sedgwick County
AQI 21
Summit County
AQI 34
Teller County
AQI 25
Washington County
AQI 32
Weld County
AQI 38
Yuma County
AQI 29
Data Sources
http://www.airnow.gov/

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AQI 34
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AQI 34
Breckenridge
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Silverthorne
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Frisco
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Wildernest
AQI 35
Bailey
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Idaho Springs
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Winter Park
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