1. North America
  2. United States
  3. Colorado

Colorado

United States

2026-06-21 20:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
122.6
PM10
μg/m³
28.2
PM2.5
μg/m³
7.5
CO
μg/m³
291.7
NO2
μg/m³
5.8
SO2
μg/m³
2.1
Weather
  • ℃
  • ℉
19℃
19%
26 kph
9 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • CO
  • NO2
  • SO2
Places included
Adams County
AQI 41
Alamosa County
AQI 21
Arapahoe County
AQI 44
Archuleta County
AQI 46
Baca County
AQI 11
Bent County
AQI 13
Boulder County
AQI 43
Broomfield County
AQI 36
Chaffee County
AQI 6
Cheyenne County
AQI 15
Clear Creek County
AQI 38
Conejos County
AQI 21
Costilla County
AQI 6
Crowley County
AQI 10
Custer County
AQI 12
Delta County
AQI 31
Denver County
AQI 38
Dolores County
AQI 11
Douglas County
AQI 43
Eagle County
AQI 3
El Paso County
AQI 39
Elbert County
AQI 28
Fremont County
AQI 33
Garfield County
AQI 8
Gilpin County
AQI 37
Grand County
AQI 4
Gunnison County
AQI 39
Hinsdale County
AQI 21
Huerfano County
AQI 5
Jackson County
AQI 4
Jefferson County
AQI 43
La Plata County
AQI 35
Lake County
AQI 4
Larimer County
AQI 43
Las Animas County
AQI 5
Lincoln County
AQI 13
Logan County
AQI 4
Mesa County
AQI 42
Mineral County
AQI 8
Moffat County
AQI 6
Montezuma County
AQI 41
Montrose County
AQI 31
Morgan County
AQI 4
Otero County
AQI 10
Ouray County
AQI 34
Park County
AQI 4
Phillips County
AQI 5
Pitkin County
AQI 37
Prowers County
AQI 27
Pueblo County
AQI 39
Rio Blanco County
AQI 4
Rio Grande County
AQI 21
Routt County
AQI 17
Saguache County
AQI 9
San Juan County
AQI 34
San Miguel County
AQI 34
Sedgwick County
AQI 5
Summit County
AQI 5
Teller County
AQI 10
Washington County
AQI 5
Weld County
AQI 46
Yuma County
AQI 5
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Keystone
AQI 24
Georgetown
AQI 39
Breckenridge
AQI 6
Silverthorne
AQI 5
Frisco
AQI 4
Wildernest
AQI 4
Bailey
AQI 37
Idaho Springs
AQI 38
Copper Mountain
AQI 4
Black Hawk
AQI 37
Winter Park
AQI 23