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Colorado

United States

2026-01-02 02:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
5.9
O3
μg/m³
45.8
PM10
μg/m³
20.4
NO2
μg/m³
40
CO
μg/m³
875
SO2
μg/m³
3.1
Weather
  • ℃
  • ℉
-5℃
97%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 51
Alamosa County
AQI 51
Arapahoe County
AQI 42
Archuleta County
AQI 24
Baca County
AQI 25
Bent County
AQI 20
Boulder County
AQI 36
Broomfield County
AQI 43
Chaffee County
AQI 24
Cheyenne County
AQI 22
Clear Creek County
AQI 19
Conejos County
AQI 51
Costilla County
AQI 26
Crowley County
AQI 20
Custer County
AQI 22
Delta County
AQI 32
Denver County
AQI 56
Dolores County
AQI 33
Douglas County
AQI 32
Eagle County
AQI 31
El Paso County
AQI 25
Elbert County
AQI 29
Fremont County
AQI 1
Garfield County
AQI 4
Gilpin County
AQI 35
Grand County
AQI 30
Gunnison County
AQI 36
Hinsdale County
AQI 32
Huerfano County
AQI 20
Jackson County
AQI 30
Jefferson County
AQI 48
La Plata County
AQI 31
Lake County
AQI 31
Larimer County
AQI 49
Las Animas County
AQI 20
Lincoln County
AQI 21
Logan County
AQI 51
Mesa County
AQI 34
Mineral County
AQI 32
Moffat County
AQI 35
Montezuma County
AQI 14
Montrose County
AQI 32
Morgan County
AQI 45
Otero County
AQI 24
Ouray County
AQI 23
Park County
AQI 19
Phillips County
AQI 51
Pitkin County
AQI 17
Prowers County
AQI 42
Pueblo County
AQI 32
Rio Blanco County
AQI 32
Rio Grande County
AQI 51
Routt County
AQI 51
Saguache County
AQI 24
San Juan County
AQI 23
San Miguel County
AQI 23
Sedgwick County
AQI 51
Summit County
AQI 31
Teller County
AQI 24
Washington County
AQI 51
Weld County
AQI 52
Yuma County
AQI 51
Data Sources
http://www.airnow.gov/

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