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  3. Colorado

Colorado

United States

2026-09-17 13:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
40.7
PM2.5
μg/m³
3.1
PM10
μg/m³
17.6
NO2
μg/m³
19.5
CO
μg/m³
312.5
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
6℃
98%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 40
Alamosa County
AQI 18
Arapahoe County
AQI 40
Archuleta County
AQI 33
Baca County
AQI 48
Bent County
AQI 42
Boulder County
AQI 21
Broomfield County
AQI 40
Chaffee County
AQI 10
Cheyenne County
AQI 30
Clear Creek County
AQI 24
Conejos County
AQI 18
Costilla County
AQI 12
Crowley County
AQI 27
Custer County
AQI 18
Delta County
AQI 18
Denver County
AQI 40
Dolores County
AQI 11
Douglas County
AQI 40
Eagle County
AQI 14
El Paso County
AQI 22
Elbert County
AQI 25
Fremont County
AQI 17
Garfield County
AQI 5
Gilpin County
AQI 21
Grand County
AQI 32
Gunnison County
AQI 13
Hinsdale County
AQI 6
Huerfano County
AQI 14
Jackson County
AQI 26
Jefferson County
AQI 35
La Plata County
AQI 32
Lake County
AQI 10
Larimer County
AQI 24
Las Animas County
AQI 24
Lincoln County
AQI 24
Logan County
AQI 27
Mesa County
AQI 24
Mineral County
AQI 17
Moffat County
AQI 25
Montezuma County
AQI 27
Montrose County
AQI 18
Morgan County
AQI 50
Otero County
AQI 32
Ouray County
AQI 8
Park County
AQI 27
Phillips County
AQI 25
Pitkin County
AQI 4
Prowers County
AQI 32
Pueblo County
AQI 18
Rio Blanco County
AQI 31
Rio Grande County
AQI 18
Routt County
AQI 14
Saguache County
AQI 19
San Juan County
AQI 8
San Miguel County
AQI 8
Sedgwick County
AQI 28
Summit County
AQI 22
Teller County
AQI 22
Washington County
AQI 23
Weld County
AQI 29
Yuma County
AQI 24
Data Sources
http://www.airnow.gov/

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