1. North America
  2. United States
  3. Colorado

Colorado

United States

2026-09-17 11:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
42.9
PM2.5
μg/m³
2.9
PM10
μg/m³
9
NO2
μg/m³
16.3
CO
μg/m³
208.3
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
6℃
98%
10 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 17
Arapahoe County
AQI 28
Archuleta County
AQI 28
Baca County
AQI 46
Bent County
AQI 40
Boulder County
AQI 17
Broomfield County
AQI 23
Chaffee County
AQI 9
Cheyenne County
AQI 29
Clear Creek County
AQI 24
Conejos County
AQI 14
Costilla County
AQI 10
Crowley County
AQI 27
Custer County
AQI 18
Delta County
AQI 17
Denver County
AQI 21
Dolores County
AQI 11
Douglas County
AQI 25
Eagle County
AQI 15
El Paso County
AQI 20
Elbert County
AQI 25
Fremont County
AQI 15
Garfield County
AQI 11
Gilpin County
AQI 22
Grand County
AQI 30
Gunnison County
AQI 14
Hinsdale County
AQI 8
Huerfano County
AQI 14
Jackson County
AQI 25
Jefferson County
AQI 21
La Plata County
AQI 26
Lake County
AQI 9
Larimer County
AQI 25
Las Animas County
AQI 23
Lincoln County
AQI 22
Logan County
AQI 25
Mesa County
AQI 26
Mineral County
AQI 16
Moffat County
AQI 24
Montezuma County
AQI 26
Montrose County
AQI 16
Morgan County
AQI 48
Otero County
AQI 33
Ouray County
AQI 9
Park County
AQI 25
Phillips County
AQI 24
Pitkin County
AQI 6
Prowers County
AQI 32
Pueblo County
AQI 20
Rio Blanco County
AQI 31
Rio Grande County
AQI 14
Routt County
AQI 11
Saguache County
AQI 18
San Juan County
AQI 9
San Miguel County
AQI 8
Sedgwick County
AQI 27
Summit County
AQI 23
Teller County
AQI 20
Washington County
AQI 22
Weld County
AQI 30
Yuma County
AQI 23
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 23
Georgetown
AQI 26
Breckenridge
AQI 21
Silverthorne
AQI 24
Frisco
AQI 22
Wildernest
AQI 23
Bailey
AQI 22
Idaho Springs
AQI 22
Copper Mountain
AQI 20
Black Hawk
AQI 22
Winter Park
AQI 29