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Colorado

United States

2025-12-29 16:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
5.7
PM10
μg/m³
23.9
O3
μg/m³
48.7
NO2
μg/m³
41.4
CO
μg/m³
541.7
SO2
μg/m³
4.7
Weather
  • ℃
  • ℉
-8℃
38%
11 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • O3
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 52
Alamosa County
AQI 56
Arapahoe County
AQI 30
Archuleta County
AQI 25
Baca County
AQI 25
Bent County
AQI 21
Boulder County
AQI 30
Broomfield County
AQI 54
Chaffee County
AQI 24
Cheyenne County
AQI 22
Clear Creek County
AQI 19
Conejos County
AQI 56
Costilla County
AQI 40
Crowley County
AQI 21
Custer County
AQI 28
Delta County
AQI 50
Denver County
AQI 46
Dolores County
AQI 33
Douglas County
AQI 20
Eagle County
AQI 36
El Paso County
AQI 24
Elbert County
AQI 18
Fremont County
AQI 35
Garfield County
AQI 14
Gilpin County
AQI 44
Grand County
AQI 29
Gunnison County
AQI 39
Hinsdale County
AQI 24
Huerfano County
AQI 20
Jackson County
AQI 29
Jefferson County
AQI 27
La Plata County
AQI 18
Lake County
AQI 36
Larimer County
AQI 24
Las Animas County
AQI 20
Lincoln County
AQI 21
Logan County
AQI 51
Mesa County
AQI 28
Mineral County
AQI 24
Moffat County
AQI 30
Montezuma County
AQI 23
Montrose County
AQI 50
Morgan County
AQI 38
Otero County
AQI 24
Ouray County
AQI 18
Park County
AQI 19
Phillips County
AQI 51
Pitkin County
AQI 31
Prowers County
AQI 14
Pueblo County
AQI 32
Rio Blanco County
AQI 28
Rio Grande County
AQI 56
Routt County
AQI 29
Saguache County
AQI 24
San Juan County
AQI 18
San Miguel County
AQI 18
Sedgwick County
AQI 51
Summit County
AQI 36
Teller County
AQI 17
Washington County
AQI 51
Weld County
AQI 34
Yuma County
AQI 51
Data Sources
http://www.airnow.gov/

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