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  3. Colorado

Colorado

United States

2026-09-19 10:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
43.2
PM2.5
μg/m³
2.7
PM10
μg/m³
8.5
NO2
μg/m³
13.8
CO
μg/m³
187.5
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
4℃
80%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 23
Alamosa County
AQI 17
Arapahoe County
AQI 24
Archuleta County
AQI 18
Baca County
AQI 16
Bent County
AQI 26
Boulder County
AQI 17
Broomfield County
AQI 24
Chaffee County
AQI 7
Cheyenne County
AQI 22
Clear Creek County
AQI 20
Conejos County
AQI 17
Costilla County
AQI 14
Crowley County
AQI 24
Custer County
AQI 14
Delta County
AQI 10
Denver County
AQI 20
Dolores County
AQI 9
Douglas County
AQI 16
Eagle County
AQI 5
El Paso County
AQI 26
Elbert County
AQI 38
Fremont County
AQI 9
Garfield County
AQI 28
Gilpin County
AQI 26
Grand County
AQI 8
Gunnison County
AQI 8
Hinsdale County
AQI 11
Huerfano County
AQI 11
Jackson County
AQI 8
Jefferson County
AQI 19
La Plata County
AQI 24
Lake County
AQI 2
Larimer County
AQI 18
Las Animas County
AQI 12
Lincoln County
AQI 23
Logan County
AQI 24
Mesa County
AQI 26
Mineral County
AQI 14
Moffat County
AQI 14
Montezuma County
AQI 27
Montrose County
AQI 10
Morgan County
AQI 38
Otero County
AQI 26
Ouray County
AQI 9
Park County
AQI 10
Phillips County
AQI 20
Pitkin County
AQI 20
Prowers County
AQI 19
Pueblo County
AQI 24
Rio Blanco County
AQI 13
Rio Grande County
AQI 17
Routt County
AQI 9
Saguache County
AQI 13
San Juan County
AQI 9
San Miguel County
AQI 9
Sedgwick County
AQI 15
Summit County
AQI 7
Teller County
AQI 16
Washington County
AQI 21
Weld County
AQI 19
Yuma County
AQI 21
Data Sources
http://www.airnow.gov/

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