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  3. Colorado

Colorado

United States

2026-06-04 14:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
76.7
PM2.5
μg/m³
5.2
PM10
μg/m³
28.1
NO2
μg/m³
22.6
CO
μg/m³
291.7
SO2
μg/m³
3.1
Weather
  • ℃
  • ℉
12℃
35%
10 kph
3 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 51
Alamosa County
AQI 30
Arapahoe County
AQI 40
Archuleta County
AQI 36
Baca County
AQI 21
Bent County
AQI 37
Boulder County
AQI 33
Broomfield County
AQI 60
Chaffee County
AQI 11
Cheyenne County
AQI 26
Clear Creek County
AQI 28
Conejos County
AQI 35
Costilla County
AQI 14
Crowley County
AQI 34
Custer County
AQI 10
Delta County
AQI 33
Denver County
AQI 29
Dolores County
AQI 12
Douglas County
AQI 37
Eagle County
AQI 20
El Paso County
AQI 36
Elbert County
AQI 23
Fremont County
AQI 18
Garfield County
AQI 32
Gilpin County
AQI 46
Grand County
AQI 20
Gunnison County
AQI 31
Hinsdale County
AQI 19
Huerfano County
AQI 10
Jackson County
AQI 17
Jefferson County
AQI 38
La Plata County
AQI 33
Lake County
AQI 16
Larimer County
AQI 34
Las Animas County
AQI 14
Lincoln County
AQI 32
Logan County
AQI 30
Mesa County
AQI 36
Mineral County
AQI 12
Moffat County
AQI 24
Montezuma County
AQI 42
Montrose County
AQI 30
Morgan County
AQI 37
Otero County
AQI 35
Ouray County
AQI 35
Park County
AQI 15
Phillips County
AQI 25
Pitkin County
AQI 30
Prowers County
AQI 26
Pueblo County
AQI 33
Rio Blanco County
AQI 23
Rio Grande County
AQI 35
Routt County
AQI 27
Saguache County
AQI 14
San Juan County
AQI 35
San Miguel County
AQI 29
Sedgwick County
AQI 26
Summit County
AQI 21
Teller County
AQI 24
Washington County
AQI 28
Weld County
AQI 37
Yuma County
AQI 25
Data Sources
http://www.airnow.gov/

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AQI 23
Georgetown
AQI 28
Breckenridge
AQI 21
Silverthorne
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Frisco
AQI 21
Wildernest
AQI 21
Bailey
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Idaho Springs
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Winter Park
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