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Air quality in Colorado
Air quality index (AQI) and PM2.5 air pollution in Colorado
LIVE AQI CITY RANKING
Real-time Colorado
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Gothic | 41 |
| 2 | Central City | 39 |
| 3 | Dove Creek | 38 |
| 4 | Mancos | 38 |
| 5 | Evergreen | 37 |
| 6 | Greeley | 37 |
| 7 | Boulder | 36 |
| 8 | Estes Park | 36 |
| 9 | Towaoc | 36 |
| 10 | Centennial | 35 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
419 Contributors
See all
LIVE AQI CITY RANKING
Real-time Colorado
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Conifer | 0 |
| 2 | Leadville | 0 |
| 3 | Eagle | 3 |
| 4 | Keystone | 3 |
| 5 | Wellington | 3 |
| 6 | Silverthorne | 4 |
| 7 | Aspen | 5 |
| 8 | Carbondale | 5 |
| 9 | Frisco | 5 |
| 10 | Lamar | 5 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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The latest air quality news and resources.
Colorado air quality data attribution
419Contributors
- California Air Resources Board (CARB)
2 stations
- Utah Division of Air Quality
2 stations
- Utah Air Quality
1 station
- USA National Park Service
2 stations
5 Government Contributors
- Coalition for Clean Air (CCA)
8 stations
Non-profit organization Contributor
Utah State University (USU)1 station
- Anonymous
1 station
2 Educational Contributors
Cheryl Swanson1 station
- B Brenner
1 station
Ken Danti1 station
- Russ Stewart
1 station
- Matt Maccaux
1 station
john1 station
- SxSmith
1 station
Ed K1 station
TyW1 station
Shawn Vezzani1 station
- mckay&zuni
1 station
L1 station
- John Baum
1 station
- Mark Baybutt
1 station
Aaron Bieber1 station
- BeyondAir
1 station
- Dilan Weerasinghe
1 station
- John Salzman
1 station
- kleinp
1 station
wyndham center1 station
20 Individual Contributors
391 Anonymous contributors391 stations
391 Anonymous Contributors
Which is the most polluted city in Colorado?
- Watkins 43
- Pueblo West 42
- Gothic 41
- Welby 41
- Central City 39
- Dove Creek 38
- Mancos 38
- Evergreen 37
- Greeley 37
- Mesa Verde National Park 37
- Boulder 36
- Estes Park 36
- Towaoc 36
- Centennial 35
- Golden 35
- U.S. Air Force Academy 34
- Pagosa Springs 29
- Berthoud 28
- Florence 28
- Westcliffe 22
- Erie 21
- Kremmling 21
- Castle Rock 20
- Fort Morgan 20
- Del Norte 19
- Fruitvale 19
- Redlands 19
- Akron 18
- La Junta 18
- Orchard Mesa 18
- Palisade 18
- Brush 17
- Canon City 17
- Creede 17
- Fruita 17
- Sterling 17
- Thornton 17
- Twin Lakes 17
- Yuma 17
- Castle Pines 16
- Edgewater 16
- Florissant 16
- Fort Lupton 16
- Gleneagle 16
- Grand Junction 16
- Highlands Ranch 16
- Parker 16
- Roxborough Park 16
- Salida 16
- Aurora 15
- Black Forest 15
- Clifton 15
- Colorado Springs 15
- Cortez 15
- Denver 15
- Indian Hills 15
- Julesburg 15
- Ken Caryl 15
- Littleton 15
- Loveland 15
- Pueblo 15
- Arvada 14
- Bayfield 14
- Breckenridge 14
- Broomfield 14
- Greenwood Village 14
- Gunbarrel 14
- Lafayette 14
- Longmont 14
- Lyons 14
- Meeker 14
- Mesa 14
- Nederland 14
- Windsor 14
- Aguilar 13
- Basalt 13
- Bennett 13
- Byers 13
- Cedaredge 13
- Collbran 13
- Durango 13
- Eaton 13
- Genesee 13
- Lakewood 13
- Louisville 13
- Manitou Springs 13
- Morrison 13
- Paonia 13
- Ponderosa Park 13
- Strasburg 13
- Walden 13
- Woodland Park 13
- Aristocrat Ranchettes 12
- Berkley 12
- Brighton 12
- Cherry Creek 12
- Cheyenne Wells 12
- Colorado City 12
- Commerce City 12
- Dacono 12
- Derby 12
- Englewood 12
- Federal Heights 12
- Firestone 12
- Frederick 12
- Gilcrest 12
- Glendale 12
- Holly Hills 12
- Hudson 12
- Hugo 12
- Keenesburg 12
- Kersey 12
- La Salle 12
- Limon 12
- Lochbuie 12
- Mead 12
- Milliken 12
- Northglenn 12
- Platteville 12
- San Luis 12
- Shaw Heights 12
- Sherrelwood 12
- Silverton 12
- Snowmass Village 12
- Superior 12
- Todd Creek 12
- Wheat Ridge 12
- Acres Green 11
- Applewood 11
- Ault 11
- Campion 11
- Carriage Club 11
- Castle Pines North 11
- Castlewood 11
- Cherry Hills Village 11
- Columbine 11
- Columbine Valley 11
- Dove Valley 11
- Eads 11
- El Jebel 11
- Elizabeth 11
- Evans 11
- Fort Collins 11
- Inverness 11
- Johnstown 11
- Laporte 11
- Lone Tree 11
- Meridian 11
- Niwot 11
- Ouray 11
- Severance 11
- Sheridan 11
- Silt 11
- Southglenn 11
- Stonegate 11
- The Pinery 11
- West Pleasant View 11
- Wray 11
- Air Force Academy 10
- Alamosa 10
- Cimarron Hills 10
- Coal Creek 10
- Ellicott 10
- Fraser 10
- Glenwood Springs 10
- Gunnison 10
- Gypsum 10
- Hayden 10
- Holyoke 10
- Ignacio 10
- Kiowa 10
- Kittredge 10
- Livermore 10
- New Castle 10
- Palmer Lake 10
- Perry Park 10
- Routt 10
- Steamboat Springs 10
- Cascade-Chipita Park 9
- Conejos 9
- Cripple Creek 9
- Delta 9
- Fairplay 9
- Fountain 9
- Granby 9
- Hot Sulphur Springs 9
- Idaho Springs 9
- Lincoln Park 9
- Montrose 9
- Ordway 9
- Parachute 9
- Penrose 9
- Security-Widefield 9
- Stratmoor 9
- Upper Bear Creek 9
- Westminster 9
- Alamosa East 8
- Bedrock 8
- Burlington 8
- Craig 8
- Crested Butte 8
- Fowler 8
- Georgetown 8
- Glen Eden 8
- Las Animas 8
- Monte Vista 8
- Park 8
- Rocky Ford 8
- Saguache 8
- Telluride 8
- Avon 7
- Buena Vista 7
- Center 7
- Edwards 7
- Fort Carson 7
- Lake City 7
- Loma 7
- Monument 7
- Mountain Village 7
- Olathe 7
- Orchard City 7
- Rangely 7
- Springfield 7
- Trinidad 7
- Vail 7
- Walsenburg 7
- Battlement Mesa 6
- Leadville North 6
- Minturn 6
- Rifle 6
- Aspen 5
- Carbondale 5
- Frisco 5
- Lamar 5
- Woodmoor 5
- Silverthorne 4
- Eagle 3
- Keystone 3
- Wellington 3
- Conifer 0
- Leadville 0
AQI US, Metric