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Colorado

United States

2026-09-18 02:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
55.3
PM10
μg/m³
17.2
NO2
μg/m³
16.2
PM2.5
μg/m³
3.8
CO
μg/m³
354.2
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
7℃
97%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 24
Alamosa County
AQI 10
Arapahoe County
AQI 24
Archuleta County
AQI 16
Baca County
AQI 16
Bent County
AQI 33
Boulder County
AQI 15
Broomfield County
AQI 24
Chaffee County
AQI 2
Cheyenne County
AQI 12
Clear Creek County
AQI 19
Conejos County
AQI 10
Costilla County
AQI 7
Crowley County
AQI 34
Custer County
AQI 8
Delta County
AQI 8
Denver County
AQI 24
Dolores County
AQI 3
Douglas County
AQI 24
Eagle County
AQI 4
El Paso County
AQI 27
Elbert County
AQI 16
Fremont County
AQI 53
Garfield County
AQI 13
Gilpin County
AQI 15
Grand County
AQI 3
Gunnison County
AQI 15
Hinsdale County
AQI 8
Huerfano County
AQI 6
Jackson County
AQI 4
Jefferson County
AQI 22
La Plata County
AQI 15
Lake County
AQI 2
Larimer County
AQI 19
Las Animas County
AQI 15
Lincoln County
AQI 11
Logan County
AQI 8
Mesa County
AQI 18
Mineral County
AQI 6
Moffat County
AQI 3
Montezuma County
AQI 19
Montrose County
AQI 8
Morgan County
AQI 6
Otero County
AQI 49
Ouray County
AQI 12
Park County
AQI 3
Phillips County
AQI 10
Pitkin County
AQI 5
Prowers County
AQI 42
Pueblo County
AQI 23
Rio Blanco County
AQI 3
Rio Grande County
AQI 10
Routt County
AQI 8
Saguache County
AQI 6
San Juan County
AQI 12
San Miguel County
AQI 12
Sedgwick County
AQI 11
Summit County
AQI 3
Teller County
AQI 6
Washington County
AQI 6
Weld County
AQI 24
Yuma County
AQI 11
Data Sources
http://www.airnow.gov/

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