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Colorado

United States

2026-09-17 02:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
67.4
PM10
μg/m³
20.9
NO2
μg/m³
12.3
PM2.5
μg/m³
3.4
CO
μg/m³
270.8
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
6℃
97%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 31
Alamosa County
AQI 16
Arapahoe County
AQI 31
Archuleta County
AQI 13
Baca County
AQI 16
Bent County
AQI 10
Boulder County
AQI 23
Broomfield County
AQI 31
Chaffee County
AQI 4
Cheyenne County
AQI 8
Clear Creek County
AQI 21
Conejos County
AQI 16
Costilla County
AQI 7
Crowley County
AQI 7
Custer County
AQI 6
Delta County
AQI 18
Denver County
AQI 31
Dolores County
AQI 3
Douglas County
AQI 31
Eagle County
AQI 3
El Paso County
AQI 28
Elbert County
AQI 18
Fremont County
AQI 13
Garfield County
AQI 11
Gilpin County
AQI 21
Grand County
AQI 3
Gunnison County
AQI 17
Hinsdale County
AQI 6
Huerfano County
AQI 4
Jackson County
AQI 3
Jefferson County
AQI 28
La Plata County
AQI 23
Lake County
AQI 3
Larimer County
AQI 23
Las Animas County
AQI 7
Lincoln County
AQI 6
Logan County
AQI 5
Mesa County
AQI 19
Mineral County
AQI 13
Moffat County
AQI 3
Montezuma County
AQI 30
Montrose County
AQI 18
Morgan County
AQI 4
Otero County
AQI 13
Ouray County
AQI 8
Park County
AQI 4
Phillips County
AQI 6
Pitkin County
AQI 10
Prowers County
AQI 21
Pueblo County
AQI 76
Rio Blanco County
AQI 3
Rio Grande County
AQI 16
Routt County
AQI 9
Saguache County
AQI 10
San Juan County
AQI 8
San Miguel County
AQI 8
Sedgwick County
AQI 5
Summit County
AQI 3
Teller County
AQI 6
Washington County
AQI 7
Weld County
AQI 22
Yuma County
AQI 7
Data Sources
http://www.airnow.gov/

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