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Colorado

United States

2026-09-23 05:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
74.4
PM10
μg/m³
8.8
PM2.5
μg/m³
2.7
NO2
μg/m³
6.6
CO
μg/m³
166.7
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
4℃
92%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 26
Alamosa County
AQI 6
Arapahoe County
AQI 25
Archuleta County
AQI 27
Baca County
AQI 7
Bent County
AQI 25
Boulder County
AQI 27
Broomfield County
AQI 11
Chaffee County
AQI 6
Cheyenne County
AQI 5
Clear Creek County
AQI 24
Conejos County
AQI 6
Costilla County
AQI 4
Crowley County
AQI 25
Custer County
AQI 5
Delta County
AQI 10
Denver County
AQI 25
Dolores County
AQI 3
Douglas County
AQI 27
Eagle County
AQI 6
El Paso County
AQI 21
Elbert County
AQI 16
Fremont County
AQI 15
Garfield County
AQI 13
Gilpin County
AQI 29
Grand County
AQI 5
Gunnison County
AQI 13
Hinsdale County
AQI 3
Huerfano County
AQI 4
Jackson County
AQI 4
Jefferson County
AQI 28
La Plata County
AQI 23
Lake County
AQI 6
Larimer County
AQI 26
Las Animas County
AQI 7
Lincoln County
AQI 7
Logan County
AQI 4
Mesa County
AQI 22
Mineral County
AQI 4
Moffat County
AQI 5
Montezuma County
AQI 26
Montrose County
AQI 10
Morgan County
AQI 4
Otero County
AQI 36
Ouray County
AQI 3
Park County
AQI 6
Phillips County
AQI 5
Pitkin County
AQI 18
Prowers County
AQI 14
Pueblo County
AQI 18
Rio Blanco County
AQI 5
Rio Grande County
AQI 6
Routt County
AQI 7
Saguache County
AQI 5
San Juan County
AQI 3
San Miguel County
AQI 3
Sedgwick County
AQI 5
Summit County
AQI 6
Teller County
AQI 7
Washington County
AQI 4
Weld County
AQI 28
Yuma County
AQI 5
Data Sources
http://www.airnow.gov/

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