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  3. Colorado

Colorado

United States

2026-09-17 19:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
70.9
PM2.5
μg/m³
3.4
PM10
μg/m³
14.2
NO2
μg/m³
11.2
CO
μg/m³
312.5
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
12℃
74%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 36
Alamosa County
AQI 13
Arapahoe County
AQI 36
Archuleta County
AQI 34
Baca County
AQI 56
Bent County
AQI 51
Boulder County
AQI 28
Broomfield County
AQI 19
Chaffee County
AQI 4
Cheyenne County
AQI 44
Clear Creek County
AQI 26
Conejos County
AQI 13
Costilla County
AQI 13
Crowley County
AQI 24
Custer County
AQI 10
Delta County
AQI 15
Denver County
AQI 30
Dolores County
AQI 10
Douglas County
AQI 24
Eagle County
AQI 10
El Paso County
AQI 38
Elbert County
AQI 19
Fremont County
AQI 17
Garfield County
AQI 21
Gilpin County
AQI 26
Grand County
AQI 11
Gunnison County
AQI 33
Hinsdale County
AQI 7
Huerfano County
AQI 9
Jackson County
AQI 28
Jefferson County
AQI 26
La Plata County
AQI 37
Lake County
AQI 4
Larimer County
AQI 31
Las Animas County
AQI 33
Lincoln County
AQI 19
Logan County
AQI 22
Mesa County
AQI 27
Mineral County
AQI 7
Moffat County
AQI 16
Montezuma County
AQI 39
Montrose County
AQI 15
Morgan County
AQI 27
Otero County
AQI 33
Ouray County
AQI 10
Park County
AQI 7
Phillips County
AQI 32
Pitkin County
AQI 18
Prowers County
AQI 56
Pueblo County
AQI 38
Rio Blanco County
AQI 17
Rio Grande County
AQI 13
Routt County
AQI 15
Saguache County
AQI 8
San Juan County
AQI 10
San Miguel County
AQI 10
Sedgwick County
AQI 30
Summit County
AQI 7
Teller County
AQI 17
Washington County
AQI 19
Weld County
AQI 38
Yuma County
AQI 35
Data Sources
http://www.airnow.gov/

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