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  3. Colorado

Colorado

United States

2026-09-18 16:00
AQI (US)
Good
Pollutants|Pollens
PM10
μg/m³
42.8
PM2.5
μg/m³
5.9
O3
μg/m³
57.8
NO2
μg/m³
19.6
CO
μg/m³
354.2
SO2
μg/m³
4.5
Weather
  • ℃
  • ℉
11℃
51%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM10
  • PM2.5
  • O3
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 83
Alamosa County
AQI 27
Arapahoe County
AQI 83
Archuleta County
AQI 27
Baca County
AQI 30
Bent County
AQI 21
Boulder County
AQI 28
Broomfield County
AQI 83
Chaffee County
AQI 3
Cheyenne County
AQI 31
Clear Creek County
AQI 25
Conejos County
AQI 27
Costilla County
AQI 8
Crowley County
AQI 18
Custer County
AQI 6
Delta County
AQI 30
Denver County
AQI 83
Dolores County
AQI 3
Douglas County
AQI 83
Eagle County
AQI 4
El Paso County
AQI 38
Elbert County
AQI 27
Fremont County
AQI 13
Garfield County
AQI 13
Gilpin County
AQI 34
Grand County
AQI 4
Gunnison County
AQI 20
Hinsdale County
AQI 10
Huerfano County
AQI 4
Jackson County
AQI 5
Jefferson County
AQI 75
La Plata County
AQI 32
Lake County
AQI 2
Larimer County
AQI 32
Las Animas County
AQI 10
Lincoln County
AQI 14
Logan County
AQI 9
Mesa County
AQI 20
Mineral County
AQI 4
Moffat County
AQI 5
Montezuma County
AQI 32
Montrose County
AQI 30
Morgan County
AQI 29
Otero County
AQI 15
Ouray County
AQI 17
Park County
AQI 4
Phillips County
AQI 8
Pitkin County
AQI 4
Prowers County
AQI 16
Pueblo County
AQI 38
Rio Blanco County
AQI 4
Rio Grande County
AQI 27
Routt County
AQI 22
Saguache County
AQI 7
San Juan County
AQI 17
San Miguel County
AQI 17
Sedgwick County
AQI 9
Summit County
AQI 6
Teller County
AQI 14
Washington County
AQI 13
Weld County
AQI 130
Yuma County
AQI 10
Data Sources
http://www.airnow.gov/

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