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Colorado

United States

2026-09-21 03:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
80.1
PM10
μg/m³
14.5
NO2
μg/m³
11.2
PM2.5
μg/m³
3.7
CO
μg/m³
250
SO2
μg/m³
1
Weather
  • ℃
  • ℉
3℃
73%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 23
Alamosa County
AQI 15
Arapahoe County
AQI 31
Archuleta County
AQI 13
Baca County
AQI 4
Bent County
AQI 5
Boulder County
AQI 29
Broomfield County
AQI 17
Chaffee County
AQI 4
Cheyenne County
AQI 4
Clear Creek County
AQI 28
Conejos County
AQI 12
Costilla County
AQI 3
Crowley County
AQI 10
Custer County
AQI 6
Delta County
AQI 11
Denver County
AQI 23
Dolores County
AQI 3
Douglas County
AQI 28
Eagle County
AQI 5
El Paso County
AQI 32
Elbert County
AQI 18
Fremont County
AQI 16
Garfield County
AQI 20
Gilpin County
AQI 32
Grand County
AQI 4
Gunnison County
AQI 22
Hinsdale County
AQI 13
Huerfano County
AQI 7
Jackson County
AQI 5
Jefferson County
AQI 32
La Plata County
AQI 25
Lake County
AQI 5
Larimer County
AQI 28
Las Animas County
AQI 12
Lincoln County
AQI 2
Logan County
AQI 3
Mesa County
AQI 25
Mineral County
AQI 3
Moffat County
AQI 5
Montezuma County
AQI 27
Montrose County
AQI 12
Morgan County
AQI 2
Otero County
AQI 23
Ouray County
AQI 22
Park County
AQI 5
Phillips County
AQI 3
Pitkin County
AQI 21
Prowers County
AQI 8
Pueblo County
AQI 25
Rio Blanco County
AQI 6
Rio Grande County
AQI 12
Routt County
AQI 11
Saguache County
AQI 5
San Juan County
AQI 22
San Miguel County
AQI 21
Sedgwick County
AQI 3
Summit County
AQI 5
Teller County
AQI 4
Washington County
AQI 3
Weld County
AQI 24
Yuma County
AQI 4
Data Sources
http://www.airnow.gov/

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