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Colorado

United States

2026-09-17 17:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
26.4
O3
μg/m³
64.1
NO2
μg/m³
12.6
PM2.5
μg/m³
3.9
CO
μg/m³
312.5
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
11℃
91%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 63
Alamosa County
AQI 10
Arapahoe County
AQI 63
Archuleta County
AQI 25
Baca County
AQI 22
Bent County
AQI 22
Boulder County
AQI 20
Broomfield County
AQI 63
Chaffee County
AQI 2
Cheyenne County
AQI 11
Clear Creek County
AQI 17
Conejos County
AQI 10
Costilla County
AQI 4
Crowley County
AQI 9
Custer County
AQI 3
Delta County
AQI 6
Denver County
AQI 63
Dolores County
AQI 3
Douglas County
AQI 63
Eagle County
AQI 3
El Paso County
AQI 22
Elbert County
AQI 16
Fremont County
AQI 10
Garfield County
AQI 15
Gilpin County
AQI 18
Grand County
AQI 4
Gunnison County
AQI 26
Hinsdale County
AQI 5
Huerfano County
AQI 3
Jackson County
AQI 6
Jefferson County
AQI 57
La Plata County
AQI 26
Lake County
AQI 2
Larimer County
AQI 22
Las Animas County
AQI 10
Lincoln County
AQI 5
Logan County
AQI 6
Mesa County
AQI 19
Mineral County
AQI 2
Moffat County
AQI 6
Montezuma County
AQI 26
Montrose County
AQI 6
Morgan County
AQI 9
Otero County
AQI 16
Ouray County
AQI 5
Park County
AQI 3
Phillips County
AQI 8
Pitkin County
AQI 13
Prowers County
AQI 41
Pueblo County
AQI 23
Rio Blanco County
AQI 6
Rio Grande County
AQI 10
Routt County
AQI 8
Saguache County
AQI 3
San Juan County
AQI 5
San Miguel County
AQI 5
Sedgwick County
AQI 7
Summit County
AQI 5
Teller County
AQI 6
Washington County
AQI 5
Weld County
AQI 43
Yuma County
AQI 9
Data Sources
http://www.airnow.gov/

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