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Colorado

United States

2026-09-17 11:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
44.7
PM10
μg/m³
9.3
NO2
μg/m³
12.4
PM2.5
μg/m³
3.1
CO
μg/m³
166.7
SO2
μg/m³
2.4
Weather
  • ℃
  • ℉
6℃
97%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 14
Alamosa County
AQI 7
Arapahoe County
AQI 21
Archuleta County
AQI 11
Baca County
AQI 12
Bent County
AQI 14
Boulder County
AQI 19
Broomfield County
AQI 14
Chaffee County
AQI 3
Cheyenne County
AQI 8
Clear Creek County
AQI 16
Conejos County
AQI 7
Costilla County
AQI 3
Crowley County
AQI 11
Custer County
AQI 5
Delta County
AQI 8
Denver County
AQI 18
Dolores County
AQI 4
Douglas County
AQI 17
Eagle County
AQI 4
El Paso County
AQI 11
Elbert County
AQI 14
Fremont County
AQI 8
Garfield County
AQI 9
Gilpin County
AQI 18
Grand County
AQI 8
Gunnison County
AQI 11
Hinsdale County
AQI 4
Huerfano County
AQI 4
Jackson County
AQI 6
Jefferson County
AQI 17
La Plata County
AQI 15
Lake County
AQI 3
Larimer County
AQI 10
Las Animas County
AQI 6
Lincoln County
AQI 6
Logan County
AQI 7
Mesa County
AQI 20
Mineral County
AQI 5
Moffat County
AQI 7
Montezuma County
AQI 20
Montrose County
AQI 8
Morgan County
AQI 12
Otero County
AQI 15
Ouray County
AQI 6
Park County
AQI 6
Phillips County
AQI 7
Pitkin County
AQI 5
Prowers County
AQI 20
Pueblo County
AQI 15
Rio Blanco County
AQI 8
Rio Grande County
AQI 7
Routt County
AQI 5
Saguache County
AQI 5
San Juan County
AQI 6
San Miguel County
AQI 6
Sedgwick County
AQI 7
Summit County
AQI 6
Teller County
AQI 6
Washington County
AQI 6
Weld County
AQI 12
Yuma County
AQI 6
Data Sources
http://www.airnow.gov/

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