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  3. Colorado

Colorado

United States

2026-09-15 12:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
6.4
O3
μg/m³
67.9
PM10
μg/m³
21.2
NO2
μg/m³
8.8
CO
μg/m³
395.8
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
4℃
90%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 53
Alamosa County
AQI 22
Arapahoe County
AQI 38
Archuleta County
AQI 25
Baca County
AQI 15
Bent County
AQI 21
Boulder County
AQI 55
Broomfield County
AQI 54
Chaffee County
AQI 14
Cheyenne County
AQI 17
Clear Creek County
AQI 29
Conejos County
AQI 22
Costilla County
AQI 10
Crowley County
AQI 21
Custer County
AQI 14
Delta County
AQI 21
Denver County
AQI 48
Dolores County
AQI 12
Douglas County
AQI 37
Eagle County
AQI 20
El Paso County
AQI 37
Elbert County
AQI 25
Fremont County
AQI 23
Garfield County
AQI 12
Gilpin County
AQI 51
Grand County
AQI 14
Gunnison County
AQI 25
Hinsdale County
AQI 14
Huerfano County
AQI 15
Jackson County
AQI 16
Jefferson County
AQI 38
La Plata County
AQI 32
Lake County
AQI 17
Larimer County
AQI 92
Las Animas County
AQI 15
Lincoln County
AQI 19
Logan County
AQI 11
Mesa County
AQI 20
Mineral County
AQI 41
Moffat County
AQI 33
Montezuma County
AQI 30
Montrose County
AQI 21
Morgan County
AQI 13
Otero County
AQI 23
Ouray County
AQI 11
Park County
AQI 14
Phillips County
AQI 12
Pitkin County
AQI 16
Prowers County
AQI 20
Pueblo County
AQI 29
Rio Blanco County
AQI 28
Rio Grande County
AQI 22
Routt County
AQI 20
Saguache County
AQI 24
San Juan County
AQI 11
San Miguel County
AQI 11
Sedgwick County
AQI 11
Summit County
AQI 17
Teller County
AQI 29
Washington County
AQI 13
Weld County
AQI 70
Yuma County
AQI 13
Data Sources
http://www.airnow.gov/

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Breckenridge
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AQI 17
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