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  3. Colorado

Colorado

United States

2026-09-19 17:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
84.7
PM2.5
μg/m³
2.2
PM10
μg/m³
7.8
NO2
μg/m³
5.6
CO
μg/m³
145.8
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
10℃
47%
15 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 46
Alamosa County
AQI 16
Arapahoe County
AQI 45
Archuleta County
AQI 37
Baca County
AQI 23
Bent County
AQI 23
Boulder County
AQI 36
Broomfield County
AQI 14
Chaffee County
AQI 3
Cheyenne County
AQI 18
Clear Creek County
AQI 32
Conejos County
AQI 16
Costilla County
AQI 8
Crowley County
AQI 21
Custer County
AQI 7
Delta County
AQI 9
Denver County
AQI 43
Dolores County
AQI 7
Douglas County
AQI 43
Eagle County
AQI 4
El Paso County
AQI 44
Elbert County
AQI 25
Fremont County
AQI 16
Garfield County
AQI 25
Gilpin County
AQI 35
Grand County
AQI 4
Gunnison County
AQI 30
Hinsdale County
AQI 5
Huerfano County
AQI 5
Jackson County
AQI 6
Jefferson County
AQI 40
La Plata County
AQI 37
Lake County
AQI 3
Larimer County
AQI 35
Las Animas County
AQI 7
Lincoln County
AQI 19
Logan County
AQI 8
Mesa County
AQI 30
Mineral County
AQI 5
Moffat County
AQI 8
Montezuma County
AQI 37
Montrose County
AQI 9
Morgan County
AQI 18
Otero County
AQI 23
Ouray County
AQI 5
Park County
AQI 5
Phillips County
AQI 6
Pitkin County
AQI 26
Prowers County
AQI 15
Pueblo County
AQI 41
Rio Blanco County
AQI 7
Rio Grande County
AQI 16
Routt County
AQI 6
Saguache County
AQI 7
San Juan County
AQI 5
San Miguel County
AQI 5
Sedgwick County
AQI 6
Summit County
AQI 4
Teller County
AQI 19
Washington County
AQI 13
Weld County
AQI 39
Yuma County
AQI 8
Data Sources
http://www.airnow.gov/

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