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  3. Colorado

Colorado

United States

2026-09-17 18:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
63.9
PM10
μg/m³
26.4
PM2.5
μg/m³
3.9
NO2
μg/m³
12.6
CO
μg/m³
312.5
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
11℃
91%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 57
Alamosa County
AQI 12
Arapahoe County
AQI 57
Archuleta County
AQI 34
Baca County
AQI 57
Bent County
AQI 51
Boulder County
AQI 27
Broomfield County
AQI 57
Chaffee County
AQI 4
Cheyenne County
AQI 39
Clear Creek County
AQI 22
Conejos County
AQI 12
Costilla County
AQI 12
Crowley County
AQI 26
Custer County
AQI 11
Delta County
AQI 15
Denver County
AQI 57
Dolores County
AQI 10
Douglas County
AQI 57
Eagle County
AQI 12
El Paso County
AQI 30
Elbert County
AQI 17
Fremont County
AQI 18
Garfield County
AQI 20
Gilpin County
AQI 25
Grand County
AQI 13
Gunnison County
AQI 32
Hinsdale County
AQI 8
Huerfano County
AQI 9
Jackson County
AQI 22
Jefferson County
AQI 53
La Plata County
AQI 35
Lake County
AQI 5
Larimer County
AQI 57
Las Animas County
AQI 34
Lincoln County
AQI 18
Logan County
AQI 22
Mesa County
AQI 26
Mineral County
AQI 6
Moffat County
AQI 19
Montezuma County
AQI 37
Montrose County
AQI 15
Morgan County
AQI 35
Otero County
AQI 37
Ouray County
AQI 10
Park County
AQI 9
Phillips County
AQI 29
Pitkin County
AQI 17
Prowers County
AQI 56
Pueblo County
AQI 31
Rio Blanco County
AQI 21
Rio Grande County
AQI 12
Routt County
AQI 17
Saguache County
AQI 8
San Juan County
AQI 10
San Miguel County
AQI 10
Sedgwick County
AQI 27
Summit County
AQI 9
Teller County
AQI 22
Washington County
AQI 20
Weld County
AQI 40
Yuma County
AQI 33
Data Sources
http://www.airnow.gov/

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AQI 16
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AQI 25
Breckenridge
AQI 9
Silverthorne
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Frisco
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Wildernest
AQI 9
Bailey
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Winter Park
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