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Colorado

United States

2026-09-18 17:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
27.5
O3
μg/m³
74.2
NO2
μg/m³
15.2
PM2.5
μg/m³
4.6
CO
μg/m³
312.5
SO2
μg/m³
4.6
Weather
  • ℃
  • ℉
12℃
58%
8 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 12
Arapahoe County
AQI 63
Archuleta County
AQI 24
Baca County
AQI 9
Bent County
AQI 10
Boulder County
AQI 25
Broomfield County
AQI 63
Chaffee County
AQI 1
Cheyenne County
AQI 9
Clear Creek County
AQI 19
Conejos County
AQI 12
Costilla County
AQI 3
Crowley County
AQI 5
Custer County
AQI 3
Delta County
AQI 15
Denver County
AQI 63
Dolores County
AQI 1
Douglas County
AQI 63
Eagle County
AQI 1
El Paso County
AQI 29
Elbert County
AQI 18
Fremont County
AQI 11
Garfield County
AQI 15
Gilpin County
AQI 25
Grand County
AQI 2
Gunnison County
AQI 15
Hinsdale County
AQI 9
Huerfano County
AQI 1
Jackson County
AQI 2
Jefferson County
AQI 57
La Plata County
AQI 29
Lake County
AQI 1
Larimer County
AQI 28
Las Animas County
AQI 3
Lincoln County
AQI 3
Logan County
AQI 2
Mesa County
AQI 19
Mineral County
AQI 2
Moffat County
AQI 2
Montezuma County
AQI 25
Montrose County
AQI 15
Morgan County
AQI 6
Otero County
AQI 8
Ouray County
AQI 11
Park County
AQI 1
Phillips County
AQI 2
Pitkin County
AQI 7
Prowers County
AQI 9
Pueblo County
AQI 29
Rio Blanco County
AQI 1
Rio Grande County
AQI 12
Routt County
AQI 10
Saguache County
AQI 3
San Juan County
AQI 11
San Miguel County
AQI 11
Sedgwick County
AQI 2
Summit County
AQI 5
Teller County
AQI 5
Washington County
AQI 3
Weld County
AQI 46
Yuma County
AQI 3
Data Sources
http://www.airnow.gov/

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