Local Data Search
A total of 64 results found. Show Results on Map.
| Rank | Air Quality Index ▼ | County / Population |
| 1. | 52.9 | Douglas, CO / 299,794 |
| 2. | 52.1 | Garfield, CO / 56,684 |
| 3. | 51.3 | Eagle, CO / 52,233 |
| 3. | 51.3 | Summit, CO / 28,482 |
| 5. | 50.9 | Rio Blanco, CO / 6,739 |
| 6. | 50.5 | Jackson, CO / 1,389 |
| 7. | 50.3 | Delta, CO / 30,378 |
| 7. | 50.3 | Grand, CO / 14,478 |
| 9. | 50.0 | Routt, CO / 23,428 |
| 10. | 49.9 | Montrose, CO / 40,885 |
| 11. | 49.8 | Mesa, CO / 147,509 |
| 12. | 49.6 | Gilpin, CO / 5,557 |
| 13. | 49.2 | Park, CO / 16,174 |
| 13. | 49.2 | Broomfield, CO / 59,027 |
| 15. | 48.8 | Clear Creek, CO / 9,114 |
| 16. | 48.4 | Chaffee, CO / 18,121 |
| 17. | 48.3 | Cheyenne, CO / 2,153 |
| 18. | 48.2 | Pueblo, CO / 160,757 |
| 18. | 48.2 | Lincoln, CO / 5,462 |
| 18. | 48.2 | Las Animas, CO / 14,789 |
| 18. | 48.2 | Kiowa, CO / 1,407 |
| 18. | 48.2 | Teller, CO / 23,363 |
| 18. | 48.2 | Huerfano, CO / 6,550 |
| 18. | 48.2 | Otero, CO / 18,712 |
| 18. | 48.2 | Crowley, CO / 5,558 |
| 18. | 48.2 | Custer, CO / 4,274 |
| 18. | 48.2 | Bent, CO / 6,000 |
| 18. | 48.2 | El Paso, CO / 645,707 |
| 18. | 48.2 | Fremont, CO / 46,879 |
| 30. | 48.1 | Elbert, CO / 23,545 |
| 30. | 48.1 | Kit Carson, CO / 8,122 |
| 32. | 48.0 | Moffat, CO / 13,286 |
| 33. | 47.9 | Larimer, CO / 311,435 |
| 34. | 47.7 | Boulder, CO / 305,166 |
| 35. | 47.5 | Costilla, CO / 3,578 |
| 35. | 47.5 | Lake, CO / 7,311 |
| 37. | 47.5 | Dolores, CO / 1,736 |
| 37. | 47.5 | San Miguel, CO / 7,597 |
| 37. | 47.5 | Montezuma, CO / 25,569 |
| 40. | 47.3 | Alamosa, CO / 16,111 |
| 40. | 47.3 | Saguache, CO / 6,211 |
| 42. | 46.8 | Prowers, CO / 12,359 |
| 42. | 46.8 | Baca, CO / 3,735 |
| 42. | 46.8 | Jefferson, CO / 546,162 |
| 45. | 46.5 | Morgan, CO / 28,342 |
| 45. | 46.5 | Washington, CO / 4,781 |
| 45. | 46.5 | Yuma, CO / 10,131 |
| 48. | 46.5 | Arapahoe, CO / 596,684 |
| 49. | 46.2 | Pitkin, CO / 17,303 |
| 50. | 46.0 | Sedgwick, CO / 2,365 |
| 50. | 46.0 | Phillips, CO / 4,385 |
| 52. | 45.6 | Weld, CO / 265,066 |
| 52. | 45.6 | Logan, CO / 22,604 |
| 54. | 45.4 | Gunnison, CO / 15,503 |
| 55. | 45.0 | Adams, CO / 461,558 |
| 56. | 44.8 | Conejos, CO / 8,276 |
| 56. | 44.8 | Archuleta, CO / 12,132 |
| 56. | 44.8 | Rio Grande, CO / 11,840 |
| 59. | 44.7 | San Juan, CO / 653 |
| 59. | 44.7 | Ouray, CO / 4,532 |
| 59. | 44.7 | Hinsdale, CO / 871 |
| 59. | 44.7 | Mineral, CO / 704 |
| 63. | 43.9 | La Plata, CO / 52,547 |
| 64. | 43.4 | Denver, CO / 633,777 |
Please note that we only rank locations with 'Air Quality Index' data. The rank above might not be a complete list. Locations without 'Air Quality Index' data are not listed.