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Colorado

United States

2026-09-19 04:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
58.8
PM10
μg/m³
14.7
NO2
μg/m³
24.1
PM2.5
μg/m³
3.1
CO
μg/m³
354.2
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
6℃
77%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 29
Alamosa County
AQI 7
Arapahoe County
AQI 23
Archuleta County
AQI 11
Baca County
AQI 8
Bent County
AQI 21
Boulder County
AQI 21
Broomfield County
AQI 21
Chaffee County
AQI 4
Cheyenne County
AQI 5
Clear Creek County
AQI 20
Conejos County
AQI 7
Costilla County
AQI 3
Crowley County
AQI 11
Custer County
AQI 3
Delta County
AQI 15
Denver County
AQI 27
Dolores County
AQI 3
Douglas County
AQI 21
Eagle County
AQI 5
El Paso County
AQI 31
Elbert County
AQI 15
Fremont County
AQI 2
Garfield County
AQI 5
Gilpin County
AQI 21
Grand County
AQI 4
Gunnison County
AQI 10
Hinsdale County
AQI 10
Huerfano County
AQI 2
Jackson County
AQI 3
Jefferson County
AQI 21
La Plata County
AQI 17
Lake County
AQI 5
Larimer County
AQI 25
Las Animas County
AQI 5
Lincoln County
AQI 7
Logan County
AQI 4
Mesa County
AQI 25
Mineral County
AQI 4
Moffat County
AQI 3
Montezuma County
AQI 28
Montrose County
AQI 15
Morgan County
AQI 5
Otero County
AQI 21
Ouray County
AQI 20
Park County
AQI 4
Phillips County
AQI 5
Pitkin County
AQI 17
Prowers County
AQI 35
Pueblo County
AQI 29
Rio Blanco County
AQI 4
Rio Grande County
AQI 7
Routt County
AQI 9
Saguache County
AQI 4
San Juan County
AQI 20
San Miguel County
AQI 20
Sedgwick County
AQI 5
Summit County
AQI 5
Teller County
AQI 2
Washington County
AQI 5
Weld County
AQI 20
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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