| Rank | Air Quality Index ▼ | School District / Population |
| 1. | 55.7 | Greensburg Salem School District / 25,932 |
| 1. | 55.7 | Jeannette City School District / 9,438 |
| 1. | 55.7 | Greater Latrobe School District / 31,099 |
| 4. | 55.6 | McKeesport Area School District / 31,240 |
| 4. | 55.6 | Norwin School District / 35,638 |
| 6. | 55.5 | Hempfield Area School District / 50,219 |
| 7. | 55.0 | South Allegheny School District / 11,805 |
| 7. | 55.0 | Clairton City School District / 6,752 |
| 9. | 54.5 | West Jefferson Hills School District / 19,911 |
| 10. | 53.5 | Elizabeth Forward School District / 18,063 |
| 11. | 52.9 | Baldwin-Whitehall School District / 35,718 |
| 12. | 52.7 | South Park School District / 13,492 |
| 13. | 52.6 | Duquesne City School District / 5,558 |
| 13. | 52.6 | Penn-Trafford School District / 25,983 |
| 15. | 52.3 | Gateway School District / 31,648 |
| 15. | 52.3 | Woodland Hills School District / 46,785 |
| 15. | 52.3 | Steel Valley School District / 16,310 |
| 15. | 52.3 | West Mifflin Area School District / 21,549 |
| 15. | 52.3 | East Allegheny School District / 14,867 |
| 20. | 51.1 | Plum Borough School District / 27,386 |
| 20. | 51.1 | Penn Manor School District / 41,932 |
| 22. | 50.9 | Leechburg Area School District / 5,958 |
| 22. | 50.9 | Conestoga Valley School District / 33,477 |
| 22. | 50.9 | Hempfield School District / 47,451 |
| 22. | 50.9 | Avella Area School District / 4,251 |
| 26. | 50.8 | Manheim Township School District / 38,770 |
| 26. | 50.8 | Burrell School District / 13,913 |
| 26. | 50.8 | Manheim Central School District / 24,778 |
| 26. | 50.8 | Columbia Borough School District / 10,399 |
| 26. | 50.8 | New Kensington-Arnold School District / 18,049 |
| 26. | 50.8 | Lancaster School District / 75,450 |
| 26. | 50.8 | Burgettstown Area School District / 9,814 |
| 26. | 50.8 | Warwick School District / 31,174 |
| 26. | 50.8 | Donegal School District / 21,531 |
| 26. | 50.8 | Lampeter-Strasburg School District / 23,117 |
| 36. | 50.7 | Franklin Regional School District / 23,215 |
| 36. | 50.7 | Ephrata Area School District / 33,831 |
| 36. | 50.7 | Kennett Consolidated School District / 27,493 |
| 39. | 50.6 | Coatesville Area School District / 64,066 |
| 40. | 50.5 | Penn Hills School District / 42,367 |
| 40. | 50.5 | Red Lion Area School District / 38,485 |
| 42. | 50.5 | Wilkinsburg Borough School District / 15,894 |
| 42. | 50.5 | Cocalico School District / 23,293 |
| 42. | 50.5 | South Side Area School District / 6,637 |
| 45. | 50.4 | Eastern York School District / 19,829 |
| 45. | 50.4 | Eastern Lebanon County School District / 21,219 |
| 45. | 50.4 | Unionville-Chadds Ford School District / 24,011 |
| 45. | 50.4 | Downingtown Area School District / 69,907 |
| 49. | 50.1 | Twin Valley School District / 24,180 |
| 49. | 50.1 | Pequea Valley School District / 21,736 |
| 49. | 50.1 | Eastern Lancaster County School District / 32,609 |
| 52. | 50.0 | Exeter Township School District / 27,547 |
| 52. | 50.0 | Governor Mifflin School District / 30,967 |
| 52. | 50.0 | Palmyra Area School District / 22,806 |
| 52. | 50.0 | Lebanon School District / 26,383 |
| 52. | 50.0 | Cornwall-Lebanon School District / 35,180 |
| 52. | 50.0 | Conrad Weiser Area School District / 19,346 |
| 52. | 50.0 | Tulpehocken Area School District / 12,041 |
| 52. | 50.0 | Schuylkill Valley School District / 15,031 |
| 52. | 50.0 | Antietam School District / 7,628 |
| 52. | 50.0 | Annville-Cleona School District / 12,310 |
| 52. | 50.0 | Wilson School District / 38,929 |
| 52. | 50.0 | Reading School District / 88,051 |
| 52. | 50.0 | Wyomissing Area School District / 12,727 |
| 65. | 49.9 | Frazier School District / 8,177 |
| 65. | 49.9 | Belle Vernon Area School District / 18,731 |
| 67. | 49.8 | Blairsville-Saltsburg School District / 14,070 |
| 68. | 49.7 | Rockwood Area School District / 5,651 |
| 68. | 49.7 | Connellsville Area School District / 34,144 |
| 68. | 49.7 | Derry Township School District / 24,779 |
| 68. | 49.7 | Elizabethtown Area School District / 30,446 |
| 68. | 49.7 | Southmoreland School District / 15,221 |
| 73. | 49.5 | Shade-Central City School District / 3,732 |
| 73. | 49.5 | Octorara Area School District / 18,010 |
| 73. | 49.5 | South Eastern School District / 19,604 |
| 73. | 49.5 | North Star School District / 8,970 |
| 73. | 49.5 | Riverview School District / 8,860 |
| 73. | 49.5 | Ligonier Valley School District / 15,767 |
| 73. | 49.5 | Conemaugh Township Area School District / 8,226 |
| 80. | 49.5 | Chestnut Ridge School District / 10,464 |
| 80. | 49.5 | Lower Dauphin School District / 25,040 |
| 80. | 49.5 | Mount Pleasant Area School District / 17,544 |
| 83. | 49.4 | Northeastern York School District / 23,951 |
| 83. | 49.4 | Middletown Area School District / 18,382 |
| 83. | 49.4 | Northern Lebanon School District / 17,286 |
| 83. | 49.4 | Moniteau School District / 9,422 |
| 87. | 49.3 | Steelton-Highspire School District / 8,397 |
| 87. | 49.3 | Derry Area School District / 17,663 |
| 87. | 49.3 | Oxford Area School District / 25,867 |
| 87. | 49.3 | Solanco School District / 32,403 |
| 91. | 49.2 | West York Area School District / 23,531 |
| 91. | 49.2 | Central York School District / 37,736 |
| 91. | 49.2 | Yough School District / 15,941 |
| 91. | 49.2 | Allegheny Valley School District / 9,753 |
| 95. | 49.1 | Ferndale Area School District / 5,097 |
| 95. | 49.1 | Forest Hills School District / 12,448 |
| 95. | 49.1 | Windber Area School District / 8,478 |
| 95. | 49.1 | Homer-Center School District / 6,372 |
| 95. | 49.1 | United School District / 8,006 |
| 95. | 49.1 | Westmont Hilltop School District / 12,704 |
| 95. | 49.1 | Indiana Area School District / 33,154 |
| 95. | 49.1 | Greater Johnstown School District / 27,158 |
| 95. | 49.1 | Central Cambria School District / 13,649 |
| 95. | 49.1 | Dallastown Area School District / 41,349 |
| 95. | 49.1 | Schuylkill Haven Area School District / 8,203 |
| 95. | 49.1 | Brownsville Area School District / 14,990 |
| 95. | 49.1 | Charleroi School District / 11,862 |
| 95. | 49.1 | Ringgold School District / 26,000 |
| 95. | 49.1 | Monessen City School District / 7,630 |
| 95. | 49.1 | Blacklick Valley School District / 5,186 |
| 95. | 49.1 | Conemaugh Valley School District / 6,517 |
| 95. | 49.1 | Penns Manor Area School District / 5,825 |
| 95. | 49.1 | Richland School District / 14,634 |
| 95. | 49.1 | Marion Center Area School District / 10,162 |
| 95. | 49.1 | West Chester Area School District / 110,007 |
| 95. | 49.1 | California Area School District / 11,047 |
| 117. | 49.0 | Jefferson-Morgan School District / 6,002 |
| 117. | 49.0 | Southern York County School District / 20,748 |
| 117. | 49.0 | Western Beaver County School District / 5,488 |
| 120. | 48.9 | Dover Area School District / 25,731 |
| 120. | 48.9 | Minersville Area School District / 8,673 |
| 120. | 48.9 | South Western School District / 27,084 |
| 120. | 48.9 | Spring Grove Area School District / 27,906 |
| 120. | 48.9 | Pine Grove Area School District / 11,692 |
| 125. | 48.8 | York City School District / 43,817 |
| 125. | 48.8 | Carmichaels Area School District / 6,923 |
| 125. | 48.8 | Punxsutawney Area School District / 21,001 |
| 125. | 48.8 | Berlin Brothersvalley School District / 5,764 |
| 125. | 48.8 | Somerset Area School District / 21,244 |
| 125. | 48.8 | Avon Grove School District / 31,219 |
| 125. | 48.8 | Hanover Public School District / 15,365 |
| 125. | 48.8 | Muhlenberg School District / 23,687 |
| 125. | 48.8 | Shanksville-Stonycreek School District / 2,903 |
| 134. | 48.7 | Everett Area School District / 9,639 |
| 134. | 48.7 | Bethlehem-Center School District / 8,845 |
| 134. | 48.7 | Bedford Area School District / 16,657 |
| 134. | 48.7 | York Suburban School District / 21,654 |
| 134. | 48.7 | Bentworth School District / 8,314 |
| 139. | 48.6 | Brookville Area School District / 11,861 |
| 139. | 48.6 | Kiski Area School District / 28,959 |
| 139. | 48.6 | Apollo-Ridge School District / 9,439 |
| 142. | 48.5 | Center Valley School District / 18,221 |
| 142. | 48.5 | Pittsburgh School District / 309,436 |
| 142. | 48.5 | Purchase Line School District / 7,124 |
| 142. | 48.5 | DuBois Area School District / 30,964 |
| 142. | 48.5 | Brockway Area School District / 7,486 |
| 142. | 48.5 | Aliquippa School District / 9,356 |
| 142. | 48.5 | Beaver Area School District / 14,854 |
| 149. | 48.5 | Midland Borough School District / 2,608 |
| 149. | 48.5 | Brentwood Borough School District / 9,625 |
| 149. | 48.5 | Conewago Valley School District / 27,468 |
| 149. | 48.5 | Central Fulton School District / 6,432 |
| 153. | 48.4 | Curwensville Area School District / 7,326 |
| 153. | 48.4 | Big Beaver Falls Area School District / 13,524 |
| 153. | 48.4 | Freedom Area School District / 11,255 |
| 153. | 48.4 | Blackhawk School District / 18,030 |
| 153. | 48.4 | Riverside Beaver County School District / 10,503 |
| 153. | 48.4 | Tri-Valley School District / 6,555 |
| 153. | 48.4 | New Brighton Area School District / 10,660 |
| 153. | 48.4 | Clearfield Area School District / 19,219 |
| 153. | 48.4 | Rochester Area School District / 7,011 |
| 162. | 48.3 | Great Valley School District / 30,141 |
| 162. | 48.3 | Chichester School District / 24,515 |
| 162. | 48.3 | Sto-Rox School District / 12,439 |
| 162. | 48.3 | Littlestown Area School District / 14,821 |
| 162. | 48.3 | Laurel Highlands School District / 23,300 |
| 162. | 48.3 | Harmony Area School District / 2,272 |
| 162. | 48.3 | Southeastern Greene School District / 4,574 |
| 162. | 48.3 | Northgate School District / 13,042 |
| 162. | 48.3 | Cambria Heights School District / 9,801 |
| 162. | 48.3 | Altoona Area School District / 59,300 |
| 162. | 48.3 | Shaler Area School District / 39,247 |
| 162. | 48.3 | Northern Cambria School District / 7,581 |
| 162. | 48.3 | Penn Cambria School District / 16,496 |
| 175. | 48.2 | Hermitage School District / 16,237 |
| 175. | 48.2 | Meyersdale Area School District / 6,892 |
| 175. | 48.2 | Moshannon Valley School District / 8,812 |
| 175. | 48.2 | Keystone Oaks School District / 20,730 |
| 175. | 48.2 | Sharon City School District / 13,845 |
| 175. | 48.2 | Farrell Area School District / 5,716 |
| 175. | 48.2 | Sharpsville Area School District / 7,651 |
| 175. | 48.2 | Salisbury-Elk Lick School District / 2,975 |
| 175. | 48.2 | Albert Gallatin Area School District / 23,436 |
| 175. | 48.2 | Glendale School District / 5,765 |
| 185. | 48.1 | Ellwood City Area School District / 13,945 |
| 185. | 48.1 | Claysburg-Kimmel School District / 5,845 |
| 185. | 48.1 | Seneca Valley School District / 47,680 |
| 185. | 48.1 | Portage Area School District / 6,293 |
| 185. | 48.1 | Fox Chapel Area School District / 28,935 |
| 185. | 48.1 | Carlynton School District / 14,336 |
| 185. | 48.1 | Chambersburg Area School District / 67,434 |
| 192. | 48.0 | Redbank Valley School District / 8,253 |
| 192. | 48.0 | Butler Area School District / 54,465 |
| 192. | 48.0 | New Castle Area School District / 23,998 |
| 192. | 48.0 | Slippery Rock Area School District / 20,830 |
| 192. | 48.0 | West Shore School District / 63,079 |
| 192. | 48.0 | Armstrong School District / 42,724 |
| 192. | 48.0 | South Butler County School District / 18,349 |
| 192. | 48.0 | Bethel Park School District / 33,032 |
| 192. | 48.0 | Laurel School District / 8,189 |
| 192. | 48.0 | Union School District / 4,300 |
| 192. | 48.0 | Northern York County School District / 21,450 |
| 192. | 48.0 | Karns City Area School District / 10,636 |
| 192. | 48.0 | Shamokin Area School District / 20,929 |
| 192. | 48.0 | Mt. Lebanon School District / 33,085 |
| 192. | 48.0 | Uniontown Area School District / 23,111 |
| 192. | 48.0 | Shenango Area School District / 8,016 |
| 208. | 47.9 | Freeport Area School District / 11,725 |
| 208. | 47.9 | West Greene School District / 4,770 |
| 208. | 47.9 | Turkeyfoot Valley Area School District / 2,984 |
| 208. | 47.9 | Reynolds School District / 9,436 |
| 208. | 47.9 | Morrisville Borough School District / 8,689 |
| 208. | 47.9 | Lakeview School District / 8,285 |
| 208. | 47.9 | St. Marys Area School District / 19,105 |
| 215. | 47.8 | Mohawk Area School District / 10,748 |
| 215. | 47.8 | Commodore Perry School District / 4,133 |
| 215. | 47.8 | Spring Cove School District / 14,266 |
| 215. | 47.8 | Jamestown Area School District / 4,313 |
| 215. | 47.8 | Hollidaysburg Area School District / 27,261 |
| 215. | 47.8 | New Hope-Solebury School District / 11,200 |
| 215. | 47.8 | Mount Carmel Area School District / 12,448 |
| 222. | 47.7 | Penn-Delco School District / 27,024 |
| 222. | 47.7 | Chester-Upland School District / 41,324 |
| 222. | 47.7 | Upper Saint Clair School District / 19,303 |
| 222. | 47.7 | Keystone School District / 7,503 |
| 226. | 47.6 | Greenville Area School District / 10,661 |
| 226. | 47.6 | Rose Tree Media School District / 35,453 |
| 226. | 47.6 | West Allegheny School District / 20,749 |
| 226. | 47.6 | McGuffey School District / 12,899 |
| 230. | 47.5 | North Hills School District / 37,860 |
| 230. | 47.5 | Garnet Valley School District / 28,926 |
| 232. | 47.5 | Quaker Valley School District / 13,711 |
| 232. | 47.5 | Pine-Richland School District / 23,352 |
| 232. | 47.5 | Moon Area School District / 27,603 |
| 232. | 47.5 | Valley Grove School District / 6,667 |
| 232. | 47.5 | Pennsbury School District / 70,899 |
| 237. | 47.4 | Cranberry Area School District / 9,215 |
| 237. | 47.4 | Mars Area School District / 19,603 |
| 237. | 47.4 | Owen J. Roberts School District / 33,212 |
| 237. | 47.4 | Clarion Area School District / 8,643 |
| 241. | 47.3 | Central Greene School District / 15,902 |
| 241. | 47.3 | Cornell School District / 6,743 |
| 241. | 47.3 | Union Area School District / 5,521 |
| 241. | 47.3 | Oil City Area School District / 14,916 |
| 241. | 47.3 | Southern Fulton School District / 5,446 |
| 246. | 47.2 | Wallingford-Swarthmore School District / 21,593 |
| 246. | 47.2 | Ridley School District / 40,514 |
| 246. | 47.2 | Waynesboro Area School District / 32,612 |
| 246. | 47.2 | Cumberland Valley School District / 56,311 |
| 250. | 47.1 | Neshannock Township School District / 9,511 |
| 250. | 47.1 | South Middleton School District / 14,864 |
| 250. | 47.1 | Franklin Area School District / 16,320 |
| 250. | 47.1 | Williams Valley School District / 6,865 |
| 250. | 47.1 | Line Mountain School District / 8,681 |
| 250. | 47.1 | Fort Cherry School District / 8,391 |
| 250. | 47.1 | Upper Dauphin Area School District / 9,604 |
| 257. | 47.0 | Halifax Area School District / 7,893 |
| 257. | 47.0 | Susquehanna Township School District / 24,332 |
| 257. | 47.0 | Grove City Area School District / 17,633 |
| 257. | 47.0 | West Middlesex Area School District / 7,406 |
| 257. | 47.0 | Mercer Area School District / 10,584 |
| 257. | 47.0 | Wilmington Area School District / 11,583 |
| 263. | 46.9 | Clarion-Limestone Area School District / 8,000 |
| 263. | 46.9 | Central Dauphin School District / 91,628 |
| 263. | 46.9 | Deer Lakes School District / 14,285 |
| 263. | 46.9 | Montour School District / 25,926 |
| 263. | 46.9 | Chartiers Valley School District / 30,930 |
| 263. | 46.9 | Bermudian Springs School District / 12,920 |
| 269. | 46.8 | Washington School District / 15,791 |
| 269. | 46.8 | Mechanicsburg Area School District / 29,093 |
| 269. | 46.8 | East Pennsboro Area School District / 20,620 |
| 269. | 46.8 | Millersburg Area School District / 6,692 |
| 269. | 46.8 | Susquenita School District / 14,738 |
| 269. | 46.8 | Harrisburg City School District / 49,297 |
| 275. | 46.7 | Highlands School District / 20,586 |
| 275. | 46.7 | Camp Hill School District / 7,891 |
| 275. | 46.7 | Carlisle Area School District / 37,258 |
| 275. | 46.7 | Hopewell Area School District / 17,995 |
| 275. | 46.7 | Trinity Area School District / 26,103 |
| 280. | 46.6 | Fannett-Metal School District / 4,556 |
| 280. | 46.6 | Shippensburg Area School District / 28,719 |
| 280. | 46.6 | South Fayette Township School District / 14,898 |
| 280. | 46.6 | Daniel Boone Area School District / 21,371 |
| 280. | 46.6 | North Allegheny School District / 51,144 |
| 280. | 46.6 | Pottsville Area School District / 19,939 |
| 280. | 46.6 | Newport School District / 7,441 |
| 280. | 46.6 | Greenwood School District / 5,484 |
| 280. | 46.6 | West Perry School District / 18,972 |
| 280. | 46.6 | Avonworth School District / 10,796 |
| 290. | 46.5 | Selinsgrove Area School District / 22,800 |
| 290. | 46.5 | Centennial School District / 48,903 |
| 290. | 46.5 | Lower Moreland Township School District / 13,133 |
| 290. | 46.5 | Midd-West School District / 17,122 |
| 290. | 46.5 | Gettysburg Area School District / 27,591 |
| 290. | 46.5 | Upper Adams School District / 10,721 |
| 290. | 46.5 | Springfield School District / 26,946 |
| 297. | 46.5 | Conneaut School District / 18,110 |
| 297. | 46.5 | Tuscarora School District / 18,300 |
| 297. | 46.5 | Greencastle-Antrim School District / 19,158 |
| 297. | 46.5 | Northwestern Lehigh School District / 14,952 |
| 297. | 46.5 | Shikellamy School District / 22,676 |
| 297. | 46.5 | North Clarion County School District / 4,882 |
| 297. | 46.5 | Hampton Township School District / 18,444 |
| 304. | 46.4 | Crawford Central School District / 30,636 |
| 304. | 46.4 | Ambridge Area School District / 23,778 |
| 304. | 46.4 | Fairfield Area School District / 8,045 |
| 304. | 46.4 | Parkland School District / 56,803 |
| 304. | 46.4 | Northern Lehigh School District / 12,998 |
| 309. | 46.2 | Forbes Road School District / 2,869 |
| 310. | 46.1 | Panther Valley School District / 12,488 |
| 310. | 46.1 | Philadelphia City School District / 1,546,920 |
| 310. | 46.1 | Phoenixville Area School District / 32,305 |
| 310. | 46.1 | Peters Township School District / 21,587 |
| 310. | 46.1 | Lewisburg Area School District / 18,978 |
| 315. | 46.0 | Blue Mountain School District / 20,811 |
| 315. | 46.0 | Brandywine Heights Area School District / 13,191 |
| 315. | 46.0 | Tamaqua Area School District / 16,588 |
| 315. | 46.0 | Hamburg Area School District / 17,625 |
| 319. | 45.9 | East Penn School District / 55,412 |
| 319. | 45.9 | Catasauqua Area School District / 11,022 |
| 319. | 45.9 | Northampton Area School District / 41,804 |
| 319. | 45.9 | William Penn School District / 42,189 |
| 319. | 45.9 | Southern Lehigh School District / 21,459 |
| 319. | 45.9 | Whitehall-Coplay School District / 30,239 |
| 319. | 45.9 | Salisbury Township School District / 13,619 |
| 319. | 45.9 | Palmerton Area School District / 14,173 |
| 319. | 45.9 | Upper Darby School District / 90,751 |
| 319. | 45.9 | Allentown City School District / 118,793 |
| 319. | 45.9 | Haverford Township School District / 48,698 |
| 330. | 45.8 | Bensalem Township School District / 60,404 |
| 330. | 45.8 | Big Spring School District / 20,937 |
| 330. | 45.8 | Quakertown Community School District / 36,274 |
| 330. | 45.8 | Bristol Borough School District / 9,657 |
| 330. | 45.8 | Bristol Township School District / 54,431 |
| 335. | 45.7 | Saint Clair Area School District / 6,797 |
| 335. | 45.7 | Fort LeBoeuf School District / 14,365 |
| 335. | 45.7 | Boyertown Area School District / 47,336 |
| 335. | 45.7 | Marple Newtown School District / 35,845 |
| 335. | 45.7 | Millcreek Township School District / 53,902 |
| 335. | 45.7 | Erie City School District / 100,844 |
| 335. | 45.7 | Kutztown Area School District / 18,660 |
| 335. | 45.7 | General McLane School District / 17,381 |
| 335. | 45.7 | Oley Valley School District / 13,341 |
| 335. | 45.7 | Penncrest School District / 24,263 |
| 335. | 45.7 | Fleetwood Area School District / 16,786 |
| 346. | 45.6 | Canon-McMillan School District / 34,313 |
| 346. | 45.6 | Chartiers-Houston School District / 9,118 |
| 346. | 45.6 | Fairview School District / 10,187 |
| 349. | 45.5 | Saucon Valley School District / 16,669 |
| 349. | 45.5 | Lehighton Area School District / 17,797 |
| 349. | 45.5 | Bethlehem Area School District / 117,254 |
| 349. | 45.5 | Central Bucks School District / 115,083 |
| 353. | 45.5 | Northern Bedford County School District / 6,817 |
| 353. | 45.5 | Northwestern School District / 12,071 |
| 353. | 45.5 | Tussey Mountain School District / 7,388 |
| 353. | 45.5 | North Schuylkill School District / 16,690 |
| 357. | 45.4 | Hatboro-Horsham School District / 33,756 |
| 357. | 45.4 | Mahanoy Area School District / 11,560 |
| 357. | 45.4 | Pennridge School District / 48,827 |
| 360. | 45.3 | Tredyffrin-Easttown School District / 40,017 |
| 360. | 45.3 | Jim Thorpe Area School District / 15,770 |
| 360. | 45.3 | Pottstown School District / 22,519 |
| 360. | 45.3 | Bradford Area School District / 20,833 |
| 360. | 45.3 | Neshaminy School District / 71,034 |
| 360. | 45.3 | Radnor Township School District / 31,474 |
| 360. | 45.3 | Girard School District / 11,154 |
| 367. | 45.2 | Upper Merion Area School District / 34,464 |
| 368. | 45.1 | Juniata County School District / 24,112 |
| 368. | 45.1 | Southeast Delco School District / 30,371 |
| 368. | 45.1 | Springfield Township School District / 19,510 |
| 368. | 45.1 | Southern Huntingdon County School District / 7,724 |
| 368. | 45.1 | Council Rock School District / 72,652 |
| 368. | 45.1 | Warren County School District / 38,016 |
| 368. | 45.1 | Souderton Area School District / 45,992 |
| 368. | 45.1 | Wissahickon School District / 37,045 |
| 376. | 45.0 | Colonial School District / 41,997 |
| 376. | 45.0 | Upper Perkiomen School District / 22,692 |
| 376. | 45.0 | Pottsgrove School District / 21,413 |
| 376. | 45.0 | North East School District / 10,623 |
| 380. | 44.9 | Wattsburg Area School District / 10,352 |
| 380. | 44.9 | Corry Area School District / 14,339 |
| 380. | 44.9 | Allegheny-Clarion Valley School District / 5,719 |
| 380. | 44.9 | Iroquois School District / 7,227 |
| 380. | 44.9 | Harbor Creek School District / 17,336 |
| 380. | 44.9 | Union City Area School District / 6,778 |
| 380. | 44.9 | North Penn School District / 99,658 |
| 380. | 44.9 | Otto-Eldred School District / 4,171 |
| 380. | 44.9 | Titusville Area School District / 14,484 |
| 389. | 44.8 | Spring-Ford Area School District / 48,387 |
| 389. | 44.8 | Bellwood-Antis School District / 8,273 |
| 389. | 44.8 | Stroudsburg Area School District / 34,203 |
| 389. | 44.8 | Pleasant Valley School District / 33,533 |
| 389. | 44.8 | Methacton School District / 35,637 |
| 389. | 44.8 | Forest Area School District / 8,093 |
| 389. | 44.8 | Ridgway Area School District / 6,679 |
| 389. | 44.8 | Pen Argyl Area School District / 12,441 |
| 397. | 44.7 | Upper Dublin School District / 26,042 |
| 397. | 44.7 | Shenandoah Valley School District / 7,834 |
| 397. | 44.7 | Interboro School District / 23,614 |
| 400. | 44.6 | Palisades School District / 14,904 |
| 400. | 44.6 | Norristown Area School District / 64,146 |
| 400. | 44.6 | Perkiomen Valley School District / 38,720 |
| 403. | 44.5 | Upper Moreland Township School District / 24,167 |
| 403. | 44.5 | Milton Area School District / 16,769 |
| 405. | 44.5 | Philipsburg-Osceola Area School District / 15,462 |
| 405. | 44.5 | West Branch Area School District / 7,557 |
| 407. | 44.4 | Abington School District / 58,112 |
| 408. | 44.3 | Tyrone Area School District / 12,597 |
| 409. | 44.2 | Penns Valley Area School District / 13,087 |
| 409. | 44.2 | Kane Area School District / 7,351 |
| 409. | 44.2 | Mifflin County School District / 43,593 |
| 412. | 44.1 | Cheltenham Township School District / 36,912 |
| 412. | 44.1 | Bryn Athyn School District / 1,348 |
| 412. | 44.1 | Lower Merion School District / 62,409 |
| 412. | 44.1 | Bald Eagle Area School District / 13,242 |
| 412. | 44.1 | State College Area School District / 93,124 |
| 412. | 44.1 | Jenkintown School District / 4,441 |
| 418. | 44.0 | Huntingdon Area School District / 20,442 |
| 419. | 43.9 | Bellefonte Area School District / 26,787 |
| 420. | 43.8 | Wilson Area School District / 15,447 |
| 421. | 43.7 | Juniata Valley School District / 5,278 |
| 421. | 43.7 | Williamsburg Community School District / 3,863 |
| 423. | 43.6 | Mount Union Area School District / 9,963 |
| 424. | 43.5 | Bangor Area School District / 23,150 |
| 425. | 43.5 | East Stroudsburg Area School District / 47,564 |
| 425. | 43.5 | Nazareth Area School District / 28,238 |
| 425. | 43.5 | Easton Area School District / 64,301 |
| 425. | 43.5 | Mifflinburg Area School District / 16,479 |
| 429. | 43.3 | Danville Area School District / 18,983 |
| 430. | 43.2 | Southern Columbia Area School District / 10,154 |
| 430. | 43.2 | Smethport Area School District / 6,014 |
| 432. | 43.0 | Pocono Mountain School District / 64,049 |
| 433. | 42.9 | Valley View School District / 18,237 |
| 433. | 42.9 | Lakeland School District / 12,327 |
| 433. | 42.9 | Carbondale Area School District / 11,010 |
| 433. | 42.9 | Cameron County School District / 4,939 |
| 433. | 42.9 | Western Wayne School District / 19,070 |
| 438. | 42.8 | Mountain View School District / 8,565 |
| 439. | 42.7 | Johnsonburg Area School District / 4,405 |
| 440. | 42.6 | Delaware Valley School District / 28,859 |
| 440. | 42.6 | Wallenpaupack Area School District / 25,123 |
| 440. | 42.6 | North Pocono School District / 20,983 |
| 440. | 42.6 | Mid Valley School District / 15,304 |
| 440. | 42.6 | Dunmore School District / 13,974 |
| 445. | 42.5 | Oswayo Valley School District / 3,079 |
| 445. | 42.5 | Millville Area School District / 5,593 |
| 445. | 42.5 | Berwick Area School District / 22,494 |
| 448. | 42.5 | Hazleton Area School District / 72,932 |
| 449. | 42.4 | Lackawanna Trail School District / 8,620 |
| 449. | 42.4 | Canton Area School District / 6,774 |
| 451. | 42.3 | Montgomery Area School District / 7,596 |
| 451. | 42.3 | Forest City Regional School District / 6,174 |
| 451. | 42.3 | Warrior Run School District / 17,447 |
| 451. | 42.3 | Wyoming Area School District / 19,163 |
| 455. | 42.2 | Greater Nanticoke Area School District / 18,916 |
| 455. | 42.2 | Montrose Area School District / 11,985 |
| 455. | 42.2 | Bloomsburg Area School District / 20,629 |
| 455. | 42.2 | Blue Ridge School District / 7,700 |
| 455. | 42.2 | Elk Lake School District / 7,826 |
| 460. | 42.1 | Abington Heights School District / 23,300 |
| 460. | 42.1 | Wellsboro Area School District / 11,983 |
| 460. | 42.1 | Scranton School District / 75,842 |
| 460. | 42.1 | Southern Tioga School District / 16,153 |
| 460. | 42.1 | Keystone Central School District / 37,299 |
| 460. | 42.1 | Benton Area School District / 5,138 |
| 460. | 42.1 | Riverside School District / 11,942 |
| 460. | 42.1 | Central Columbia School District / 15,000 |
| 468. | 42.0 | Northwest Area School District / 9,062 |
| 468. | 42.0 | Galeton Area School District / 2,913 |
| 468. | 42.0 | Austin Area School District / 1,127 |
| 471. | 41.9 | Pittston Area School District / 27,834 |
| 471. | 41.9 | Wayne Highlands School District / 20,514 |
| 471. | 41.9 | Northern Tioga School District / 14,217 |
| 471. | 41.9 | Wyalusing Area School District / 8,698 |
| 471. | 41.9 | Susquehanna Community School District / 5,151 |
| 471. | 41.9 | Troy Area School District / 10,767 |
| 471. | 41.9 | Towanda Area School District / 10,808 |
| 478. | 41.8 | Port Allegany School District / 5,768 |
| 478. | 41.8 | Old Forge School District / 8,265 |
| 478. | 41.8 | Sullivan County School District / 6,400 |
| 481. | 41.7 | Tunkhannock Area School District / 19,156 |
| 482. | 41.6 | Northern Potter School District / 4,796 |
| 482. | 41.6 | Sayre Area School District / 7,961 |
| 482. | 41.6 | Wilkes-Barre Area School District / 59,661 |
| 482. | 41.6 | Athens Area School District / 14,643 |
| 482. | 41.6 | Hanover Area School District / 15,310 |
| 482. | 41.6 | Wyoming Valley West School District / 41,934 |
| 488. | 41.5 | Williamsport Area School District / 41,849 |
| 489. | 41.5 | Northeast Bradford School District / 5,787 |
| 489. | 41.5 | Coudersport Area School District / 5,629 |
| 489. | 41.5 | East Lycoming School District / 10,335 |
| 489. | 41.5 | Jersey Shore Area School District / 18,494 |
| 493. | 41.4 | Loyalsock Township School District / 11,144 |
| 493. | 41.4 | Muncy School District / 7,206 |
| 493. | 41.4 | Montoursville Area School District / 13,152 |
| 496. | 41.3 | Weatherly Area School District / 4,989 |
| 497. | 41.2 | Crestwood School District / 20,240 |
| 497. | 41.2 | Lake-Lehman School District / 16,905 |
| 499. | 41.1 | Dallas School District / 20,755 |
| 499. | 41.1 | South Williamsport Area School District / 9,278 |
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.
