Local Data Search
A total of 67 results found. Show Results on Map.
| Rank | Air Quality Index ▼ | County / Population |
| 1. | 55.7 | Westmoreland, PA / 362,587 |
| 2. | 50.8 | Lancaster, PA / 526,839 |
| 3. | 50.5 | Chester, PA / 506,422 |
| 4. | 49.6 | Butler, PA / 185,034 |
| 5. | 49.4 | Lebanon, PA / 135,184 |
| 6. | 49.1 | Indiana, PA / 88,301 |
| 7. | 48.9 | Somerset, PA / 77,011 |
| 8. | 48.8 | Berks, PA / 413,016 |
| 8. | 48.8 | Beaver, PA / 170,124 |
| 10. | 48.7 | Bedford, PA / 49,332 |
| 11. | 48.6 | Jefferson, PA / 44,935 |
| 12. | 48.5 | Allegheny, PA / 1,229,172 |
| 13. | 48.5 | York, PA / 438,052 |
| 14. | 48.4 | Clearfield, PA / 81,472 |
| 15. | 48.3 | Fayette, PA / 135,376 |
| 16. | 48.1 | Cambria, PA / 140,835 |
| 17. | 48.0 | Armstrong, PA / 68,343 |
| 17. | 48.0 | Lawrence, PA / 89,859 |
| 19. | 47.9 | Mercer, PA / 115,739 |
| 20. | 47.7 | Clarion, PA / 39,437 |
| 21. | 47.6 | Greene, PA / 38,171 |
| 22. | 47.2 | Delaware, PA / 560,775 |
| 23. | 47.1 | Franklin, PA / 151,517 |
| 23. | 47.1 | Dauphin, PA / 269,946 |
| 25. | 46.8 | Adams, PA / 101,566 |
| 25. | 46.8 | Fulton, PA / 14,747 |
| 27. | 46.7 | Washington, PA / 208,157 |
| 28. | 46.6 | Venango, PA / 54,265 |
| 28. | 46.6 | Schuylkill, PA / 147,146 |
| 28. | 46.6 | Perry, PA / 45,788 |
| 31. | 46.5 | Snyder, PA / 39,922 |
| 32. | 46.5 | Northumberland, PA / 94,294 |
| 32. | 46.5 | Crawford, PA / 87,801 |
| 34. | 45.6 | Erie, PA / 280,132 |
| 35. | 45.5 | Cumberland, PA / 239,420 |
| 36. | 45.4 | Lehigh, PA / 354,537 |
| 37. | 45.3 | Carbon, PA / 64,874 |
| 38. | 45.2 | Juniata, PA / 24,793 |
| 39. | 45.1 | Montgomery, PA / 809,372 |
| 40. | 45.0 | Warren, PA / 41,218 |
| 40. | 45.0 | Bucks, PA / 626,205 |
| 42. | 44.9 | Mckean, PA / 43,024 |
| 42. | 44.9 | Philadelphia, PA / 1,546,920 |
| 44. | 44.8 | Forest, PA / 7,649 |
| 45. | 44.4 | Mifflin, PA / 46,705 |
| 46. | 44.2 | Elk, PA / 31,584 |
| 46. | 44.2 | Monroe, PA / 168,342 |
| 48. | 43.9 | Centre, PA / 156,240 |
| 49. | 43.8 | Blair, PA / 126,708 |
| 50. | 43.6 | Union, PA / 44,955 |
| 51. | 43.5 | Northampton, PA / 299,225 |
| 52. | 43.4 | Huntingdon, PA / 45,950 |
| 53. | 43.0 | Montour, PA / 18,475 |
| 53. | 43.0 | Clinton, PA / 39,611 |
| 55. | 42.9 | Cameron, PA / 4,939 |
| 56. | 42.8 | Columbia, PA / 67,089 |
| 57. | 42.7 | Susquehanna, PA / 42,708 |
| 58. | 42.6 | Lackawanna, PA / 214,023 |
| 59. | 42.5 | Pike, PA / 56,883 |
| 60. | 42.4 | Wayne, PA / 51,967 |
| 61. | 42.2 | Sullivan, PA / 6,400 |
| 62. | 42.0 | Potter, PA / 17,451 |
| 63. | 41.9 | Bradford, PA / 62,510 |
| 64. | 41.8 | Tioga, PA / 42,358 |
| 65. | 41.7 | Wyoming, PA / 28,229 |
| 66. | 41.6 | Luzerne, PA / 320,392 |
| 67. | 40.8 | Lycoming, PA / 116,676 |
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.