1. North America
  2. United States
  3. Colorado

Colorado

United States

2026-09-19 09:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
46
PM2.5
μg/m³
2.9
PM10
μg/m³
9.1
NO2
μg/m³
11.8
CO
μg/m³
187.5
SO2
μg/m³
1
Weather
  • ℃
  • ℉
4℃
79%
1 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 23
Alamosa County
AQI 13
Arapahoe County
AQI 23
Archuleta County
AQI 19
Baca County
AQI 15
Bent County
AQI 26
Boulder County
AQI 22
Broomfield County
AQI 23
Chaffee County
AQI 9
Cheyenne County
AQI 23
Clear Creek County
AQI 22
Conejos County
AQI 13
Costilla County
AQI 13
Crowley County
AQI 25
Custer County
AQI 13
Delta County
AQI 20
Denver County
AQI 24
Dolores County
AQI 9
Douglas County
AQI 18
Eagle County
AQI 6
El Paso County
AQI 27
Elbert County
AQI 36
Fremont County
AQI 8
Garfield County
AQI 20
Gilpin County
AQI 25
Grand County
AQI 8
Gunnison County
AQI 8
Hinsdale County
AQI 13
Huerfano County
AQI 11
Jackson County
AQI 7
Jefferson County
AQI 18
La Plata County
AQI 23
Lake County
AQI 5
Larimer County
AQI 21
Las Animas County
AQI 12
Lincoln County
AQI 22
Logan County
AQI 22
Mesa County
AQI 28
Mineral County
AQI 14
Moffat County
AQI 13
Montezuma County
AQI 28
Montrose County
AQI 20
Morgan County
AQI 35
Otero County
AQI 26
Ouray County
AQI 14
Park County
AQI 10
Phillips County
AQI 19
Pitkin County
AQI 23
Prowers County
AQI 20
Pueblo County
AQI 29
Rio Blanco County
AQI 13
Rio Grande County
AQI 13
Routt County
AQI 10
Saguache County
AQI 14
San Juan County
AQI 14
San Miguel County
AQI 14
Sedgwick County
AQI 15
Summit County
AQI 9
Teller County
AQI 19
Washington County
AQI 19
Weld County
AQI 20
Yuma County
AQI 21
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 13
Georgetown
AQI 22
Breckenridge
AQI 9
Silverthorne
AQI 9
Frisco
AQI 8
Wildernest
AQI 8
Bailey
AQI 19
Idaho Springs
AQI 22
Copper Mountain
AQI 8
Black Hawk
AQI 25
Winter Park
AQI 13