Cities with the Cleanest Air in Colorado.
Cities in Colorado with the most good AQI days per year.
64 cities ranked · See the national list
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| # | City | Good AQI Days |
|---|---|---|
| 1 | Steamboat Springs | 342 days/yr |
| 2 | Cañon City | 338 days/yr |
| 3 | Pueblo | 268 days/yr |
| 4 | Pueblo West | 268 days/yr |
| 5 | Rifle | 252 days/yr |
| 6 | Glenwood Springs | 252 days/yr |
| 7 | Colorado Springs | 249 days/yr |
| 8 | Security-Widefield | 249 days/yr |
| 9 | Fountain | 249 days/yr |
| 10 | Cimarron Hills | 249 days/yr |
| 11 | Black Forest | 249 days/yr |
| 12 | Monument | 249 days/yr |
| 13 | Highlands Ranch | 247 days/yr |
| 14 | Castle Rock | 247 days/yr |
| 15 | Parker | 247 days/yr |
| 16 | Lone Tree | 247 days/yr |
| 17 | Castle Pines | 247 days/yr |
| 18 | The Pinery | 247 days/yr |
| 19 | Grand Junction | 238 days/yr |
| 20 | Clifton | 238 days/yr |
| 21 | Fruita | 238 days/yr |
| 22 | Durango | 222 days/yr |
| 23 | Lakewood | 215 days/yr |
| 24 | Arvada | 215 days/yr |
| 25 | Dakota Ridge | 215 days/yr |
| 26 | Ken Caryl | 215 days/yr |
| 27 | Wheat Ridge | 215 days/yr |
| 28 | Columbine | 215 days/yr |
| 29 | Golden | 215 days/yr |
| 30 | Fairmount | 215 days/yr |
| 31 | Boulder | 213 days/yr |
| 32 | Longmont | 213 days/yr |
| 33 | Lafayette | 213 days/yr |
| 34 | Louisville | 213 days/yr |
| 35 | Superior | 213 days/yr |
| 36 | Gunbarrel | 213 days/yr |
| 37 | Aurora | 212 days/yr |
| 38 | Centennial | 212 days/yr |
| 39 | Littleton | 212 days/yr |
| 40 | Englewood | 212 days/yr |
| 41 | Four Square Mile | 212 days/yr |
| 42 | Greenwood Village | 212 days/yr |
| 43 | Cherry Creek | 212 days/yr |
| 44 | Thornton | 201 days/yr |
| 45 | Westminster | 201 days/yr |
| 46 | Commerce City | 201 days/yr |
| 47 | Brighton | 201 days/yr |
| 48 | Northglenn | 201 days/yr |
| 49 | Sherrelwood | 201 days/yr |
| 50 | Welby | 201 days/yr |
| 51 | Federal Heights | 201 days/yr |
| 52 | Berkley | 201 days/yr |
| 53 | Fort Collins | 185 days/yr |
| 54 | Loveland | 185 days/yr |
| 55 | Berthoud | 185 days/yr |
| 56 | Wellington | 185 days/yr |
| 57 | Denver | 184 days/yr |
| 58 | Greeley | 163 days/yr |
| 59 | Windsor | 163 days/yr |
| 60 | Erie | 163 days/yr |
| 61 | Evans | 163 days/yr |
| 62 | Johnstown | 163 days/yr |
| 63 | Firestone | 163 days/yr |
| 64 | Frederick | 163 days/yr |
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