| Rank | Air Quality Index ▼ | School District / Population |
| 1. | 46.4 | Wales School District / 1,923 |
| 2. | 46.1 | Tantasqua School District / 20,840 |
| 2. | 46.1 | Holland School District / 2,491 |
| 2. | 46.1 | Monson School District / 8,660 |
| 5. | 45.5 | Brimfield School District / 3,667 |
| 5. | 45.5 | Hampden-Wilbraham School District / 19,537 |
| 7. | 45.2 | Ludlow School District / 21,288 |
| 8. | 45.1 | Nauset School District / 23,675 |
| 8. | 45.1 | Orleans School District / 5,874 |
| 8. | 45.1 | Dennis-Yarmouth School District / 37,793 |
| 8. | 45.1 | Harwich School District / 12,243 |
| 8. | 45.1 | Chatham School District / 6,125 |
| 8. | 45.1 | Eastham School District / 4,932 |
| 8. | 45.1 | Barnstable School District / 44,750 |
| 8. | 45.1 | Sandwich School District / 20,605 |
| 8. | 45.1 | Truro School District / 1,738 |
| 8. | 45.1 | Wellfleet School District / 3,011 |
| 8. | 45.1 | Nauset/Provincetown School Districts in Turo (7-12) / 1,738 |
| 8. | 45.1 | Brewster School District / 9,858 |
| 20. | 45.0 | Belchertown School District / 14,774 |
| 20. | 45.0 | Palmer School District / 12,155 |
| 20. | 45.0 | Ware School District / 9,886 |
| 23. | 44.9 | Plymouth School District / 57,414 |
| 23. | 44.9 | Granby School District / 6,301 |
| 23. | 44.9 | Lee School District / 6,340 |
| 26. | 44.8 | Farmington River Regional School District / 2,366 |
| 26. | 44.8 | Lee/Berkshire Hills in Farmington River Regional (7-12) / 2,366 |
| 28. | 44.7 | East Longmeadow School District / 15,917 |
| 28. | 44.7 | West Springfield School District / 28,554 |
| 28. | 44.7 | Westfield School District / 41,371 |
| 28. | 44.7 | Longmeadow School District / 15,858 |
| 28. | 44.7 | Springfield School District / 153,836 |
| 28. | 44.7 | Southern Berkshire School District / 7,188 |
| 28. | 44.7 | Agawam School District / 28,626 |
| 35. | 44.6 | Quaboag Regional School District / 8,891 |
| 35. | 44.6 | Westport School District / 15,647 |
| 35. | 44.6 | Quabbin School District / 15,772 |
| 38. | 44.5 | Bourne School District / 19,749 |
| 38. | 44.5 | Nantucket School District / 10,414 |
| 38. | 44.5 | Berkshire Hills School District / 10,505 |
| 38. | 44.5 | Falmouth School District / 31,576 |
| 38. | 44.5 | Mashpee School District / 13,988 |
| 43. | 44.5 | Chicopee School District / 55,603 |
| 43. | 44.5 | Southbridge School District / 16,775 |
| 45. | 44.4 | Dartmouth School District / 34,384 |
| 45. | 44.4 | Martha's Vineyard School District / 16,816 |
| 45. | 44.4 | Plympton School District / 2,840 |
| 45. | 44.4 | Carver School District / 11,541 |
| 45. | 44.4 | Up-Island Regional School District / 3,995 |
| 50. | 44.3 | Narragansett School District / 9,738 |
| 50. | 44.3 | Marion School District / 4,935 |
| 50. | 44.3 | Webster School District / 16,806 |
| 50. | 44.3 | Wareham School District / 22,247 |
| 54. | 44.2 | Lakeville School District / 10,602 |
| 54. | 44.2 | Middleborough School District / 23,541 |
| 56. | 44.1 | Oak Bluffs School District / 4,599 |
| 56. | 44.1 | Rochester School District / 5,348 |
| 56. | 44.1 | Tisbury School District / 4,036 |
| 56. | 44.1 | Gosnold School District / 99 |
| 56. | 44.1 | Edgartown School District / 4,186 |
| 61. | 44.0 | Spencer-East Brookfield School District / 14,009 |
| 61. | 44.0 | North Brookfield School District / 4,715 |
| 61. | 44.0 | Sturbridge School District / 9,363 |
| 61. | 44.0 | Brookfield School District / 3,396 |
| 65. | 43.8 | Gardner School District / 20,279 |
| 66. | 43.7 | Southwick-Tolland School District / 11,686 |
| 66. | 43.7 | Southwick-Tolland School District in Granville (9-12) / 1,566 |
| 66. | 43.7 | Granville School District / 1,566 |
| 66. | 43.7 | Dudley-Charlton Regional School District / 24,759 |
| 66. | 43.7 | Leicester School District / 11,147 |
| 66. | 43.7 | Blackstone-Millville School District / 12,263 |
| 66. | 43.7 | Oxford School District / 13,772 |
| 73. | 43.6 | Swampscott School District in Nahant (7-12) / 3,451 |
| 73. | 43.6 | Old Rochester School District / 16,421 |
| 73. | 43.6 | Nahant School District / 3,451 |
| 76. | 43.5 | Norton School District / 19,280 |
| 76. | 43.5 | Swansea School District / 16,005 |
| 76. | 43.5 | Somerset School District / 18,262 |
| 76. | 43.5 | Taunton School District / 56,056 |
| 80. | 43.5 | Fairhaven/New Bedford School Districts in Acushnet (9-12) / 10,329 |
| 80. | 43.5 | Provincetown School District / 2,959 |
| 80. | 43.5 | Dighton-Rehoboth School District / 18,915 |
| 80. | 43.5 | Somerset School District in Berkley (9-12) / 6,411 |
| 80. | 43.5 | Freetown School District / 8,870 |
| 80. | 43.5 | Acushnet School District / 10,329 |
| 80. | 43.5 | Fall River School District / 88,756 |
| 80. | 43.5 | Berkley School District / 6,492 |
| 80. | 43.5 | Freetown-Lakeville School District / 19,890 |
| 89. | 43.4 | North Attleborough School District / 28,779 |
| 89. | 43.4 | Attleboro School District / 43,774 |
| 89. | 43.4 | Bellingham School District / 16,564 |
| 89. | 43.4 | Plainville School District / 8,581 |
| 89. | 43.4 | Wrentham School District / 11,169 |
| 94. | 43.3 | East Bridgewater School District / 13,996 |
| 94. | 43.3 | Hanover School District / 14,120 |
| 94. | 43.3 | Randolph School District / 33,135 |
| 94. | 43.3 | Rockland School District / 17,616 |
| 94. | 43.3 | Avon School District / 4,421 |
| 94. | 43.3 | Brockton School District / 94,267 |
| 94. | 43.3 | Beverly School District / 40,370 |
| 94. | 43.3 | Abington School District / 16,081 |
| 94. | 43.3 | Holbrook School District / 10,925 |
| 94. | 43.3 | West Bridgewater School District / 6,981 |
| 94. | 43.3 | Whitman-Hanson School District / 24,959 |
| 94. | 43.3 | Kingston School District / 12,846 |
| 94. | 43.3 | Halifax School District / 7,629 |
| 94. | 43.3 | Silver Lake School District / 23,315 |
| 94. | 43.3 | Pembroke School District / 18,006 |
| 109. | 43.2 | Bridgewater-Raynham School District / 40,448 |
| 109. | 43.2 | Marblehead School District / 20,163 |
| 109. | 43.2 | Mansfield School District / 23,389 |
| 109. | 43.2 | Lynn School District / 91,289 |
| 109. | 43.2 | Uxbridge School District / 13,609 |
| 109. | 43.2 | Fairhaven School District / 15,971 |
| 109. | 43.2 | Mattapoisett School District / 6,138 |
| 109. | 43.2 | Salem School District / 42,321 |
| 109. | 43.2 | Swampscott School District / 13,912 |
| 109. | 43.2 | Revere School District / 53,258 |
| 109. | 43.2 | Foxborough School District / 17,129 |
| 109. | 43.2 | Douglas School District / 8,578 |
| 109. | 43.2 | Easton School District / 23,548 |
| 109. | 43.2 | Peabody School District / 51,868 |
| 109. | 43.2 | New Bedford School District / 94,873 |
| 124. | 43.1 | Seekonk School District / 14,131 |
| 125. | 43.0 | Duxbury School District / 15,208 |
| 125. | 43.0 | Marshfield School District / 25,430 |
| 125. | 43.0 | King Philip School District / 31,279 |
| 125. | 43.0 | Franklin School District / 32,393 |
| 129. | 42.8 | Gloucester School District / 29,237 |
| 129. | 42.8 | Pittsfield School District / 44,226 |
| 129. | 42.8 | Rockport School District / 7,078 |
| 129. | 42.8 | Manchester Essex Regional School District / 8,827 |
| 129. | 42.8 | Richmond School District / 1,535 |
| 129. | 42.8 | Pittsfield School District in Richmond (9-12) / 1,535 |
| 129. | 42.8 | Mount Greylock/New Lebanon (NY) School Districts in Hancock (7-12) / 726 |
| 129. | 42.8 | Hancock School District / 726 |
| 129. | 42.8 | Lenox School District / 5,043 |
| 138. | 42.6 | Mount Greylock School District / 10,926 |
| 138. | 42.6 | Hamilton-Wenham School District / 13,137 |
| 138. | 42.6 | Lanesborough School District / 3,302 |
| 141. | 42.5 | Ashburnham-Westminster School District / 13,494 |
| 142. | 42.5 | Central Berkshire School District / 13,907 |
| 143. | 42.4 | Hawlemont School District / 1,653 |
| 143. | 42.4 | Sherborn School District / 4,200 |
| 143. | 42.4 | Mohawk Trail Regional School District in Hawley and Charlemont towns / 1,653 |
| 146. | 42.3 | Natick School District / 34,230 |
| 146. | 42.3 | Medway School District / 12,965 |
| 148. | 42.2 | Milford School District / 28,203 |
| 148. | 42.2 | Mohawk Trail School District in Rowe (7-12) / 452 |
| 148. | 42.2 | Rowe School District / 452 |
| 148. | 42.2 | Concord-Carlisle School District / 23,801 |
| 148. | 42.2 | North Adams School District in Monroe (9-12) / 118 |
| 148. | 42.2 | North Adams School District in Florida (9-12) / 788 |
| 148. | 42.2 | Adams-Cheshire School District / 11,593 |
| 155. | 42.1 | Williamstown School District / 7,624 |
| 155. | 42.1 | Clarksburg School District / 1,580 |
| 155. | 42.1 | Savoy School District / 703 |
| 155. | 42.1 | Adams-Cheshire School District in Savoy (7-12) / 703 |
| 155. | 42.1 | North Adams School District / 13,563 |
| 155. | 42.1 | Florida School District / 906 |
| 155. | 42.1 | North Adams School District in Clarksburg (9-12) / 1,580 |
| 162. | 42.0 | Holliston School District / 14,008 |
| 162. | 42.0 | Millbury School District / 13,350 |
| 162. | 42.0 | Grafton School District / 18,047 |
| 162. | 42.0 | Framingham School District / 69,900 |
| 162. | 42.0 | Northbridge School District / 16,100 |
| 162. | 42.0 | Mendon-Upton School District / 13,536 |
| 162. | 42.0 | Sutton School District / 9,078 |
| 162. | 42.0 | Auburn School District / 16,294 |
| 162. | 42.0 | Berlin-Boylston School District / 7,316 |
| 162. | 42.0 | Shrewsbury School District / 36,114 |
| 162. | 42.0 | Wachusett School District / 42,131 |
| 162. | 42.0 | Boylston School District / 4,399 |
| 162. | 42.0 | Petersham School District / 1,277 |
| 162. | 42.0 | Burlington School District / 25,190 |
| 162. | 42.0 | West Boylston School District / 7,792 |
| 162. | 42.0 | Worcester School District / 182,511 |
| 162. | 42.0 | Winthrop School District / 17,992 |
| 179. | 41.9 | Dover School District / 5,727 |
| 179. | 41.9 | North Middlesex School District / 24,112 |
| 179. | 41.9 | Holyoke School District / 40,079 |
| 179. | 41.9 | Braintree School District / 36,543 |
| 183. | 41.8 | South Hadley School District / 17,745 |
| 183. | 41.8 | Easthampton School District / 16,066 |
| 185. | 41.7 | Northborough-Southborough School District / 24,513 |
| 185. | 41.7 | Littleton School District / 9,157 |
| 185. | 41.7 | Dover-Sherborn School District / 9,927 |
| 185. | 41.7 | Northborough School District / 14,644 |
| 185. | 41.7 | Hopkinton School District / 15,604 |
| 185. | 41.7 | Hopedale School District / 5,934 |
| 185. | 41.7 | Westborough School District / 18,481 |
| 185. | 41.7 | Boxborough School District / 5,102 |
| 185. | 41.7 | Harvard School District / 6,558 |
| 185. | 41.7 | Newburyport School District / 17,662 |
| 185. | 41.7 | Amesbury School District / 16,554 |
| 185. | 41.7 | Berlin School District / 2,917 |
| 185. | 41.7 | Clinton School District / 13,675 |
| 198. | 41.6 | Gateway School District / 8,898 |
| 198. | 41.6 | Weymouth School District / 54,815 |
| 198. | 41.6 | Southampton School District / 5,958 |
| 198. | 41.6 | Everett School District / 42,758 |
| 198. | 41.6 | Sudbury School District / 18,197 |
| 198. | 41.6 | Malden School District / 60,309 |
| 198. | 41.6 | Lincoln-Sudbury School District / 25,378 |
| 198. | 41.6 | Hampshire School District / 12,499 |
| 198. | 41.6 | Hingham School District / 22,550 |
| 198. | 41.6 | Northampton School District / 28,637 |
| 198. | 41.6 | Norwell School District / 10,651 |
| 198. | 41.6 | Scituate School District / 18,240 |
| 210. | 41.5 | Nashoba School District / 19,886 |
| 210. | 41.5 | Westhampton School District / 1,586 |
| 210. | 41.5 | Carlisle School District / 4,967 |
| 210. | 41.5 | Acton-Boxborough School District / 27,716 |
| 210. | 41.5 | Needham School District / 29,540 |
| 210. | 41.5 | Acton School District / 22,614 |
| 216. | 41.5 | Lunenburg School District / 10,797 |
| 216. | 41.5 | Ayer/Lunenberg School Districts in Shirley (9-12) / 7,211 |
| 216. | 41.5 | Marlborough School District / 39,141 |
| 216. | 41.5 | Westford School District / 22,854 |
| 216. | 41.5 | Southborough School District / 9,869 |
| 216. | 41.5 | Hudson School District / 19,464 |
| 216. | 41.5 | Fitchburg School District / 40,419 |
| 216. | 41.5 | Ayer School District / 7,427 |
| 216. | 41.5 | Groton-Dunstable School District / 14,296 |
| 216. | 41.5 | Shirley School District / 7,211 |
| 226. | 41.4 | Brookline School District / 59,016 |
| 227. | 41.3 | Medford School District / 56,981 |
| 227. | 41.3 | Chelsea School District / 37,084 |
| 227. | 41.3 | Winchester School District / 21,863 |
| 227. | 41.3 | Leominster School District / 40,954 |
| 227. | 41.3 | Maynard School District / 10,314 |
| 227. | 41.3 | Ashland School District / 16,985 |
| 233. | 41.2 | Bedford School District / 13,788 |
| 233. | 41.2 | Ipswich School District / 13,480 |
| 233. | 41.2 | Millis School District / 8,007 |
| 233. | 41.2 | Danvers School District / 27,075 |
| 233. | 41.2 | Concord School District / 18,834 |
| 238. | 41.1 | Deerfield School District / 5,097 |
| 238. | 41.1 | Amherst-Pelham School District / 44,250 |
| 238. | 41.1 | Leverett School District / 1,836 |
| 238. | 41.1 | Sunderland School District / 3,683 |
| 238. | 41.1 | Frontier School District / 11,827 |
| 238. | 41.1 | Pelham School District / 1,350 |
| 238. | 41.1 | Amherst School District / 39,260 |
| 238. | 41.1 | Shutesbury School District / 1,804 |
| 246. | 41.0 | Williamsburg School District / 2,583 |
| 246. | 41.0 | Whately School District / 1,384 |
| 246. | 41.0 | Hadley School District / 5,285 |
| 246. | 41.0 | Hatfield School District / 3,293 |
| 246. | 41.0 | Medfield School District / 12,236 |
| 246. | 41.0 | Conway School District / 1,663 |
| 252. | 40.9 | Middleton School District / 9,273 |
| 252. | 40.9 | Norfolk School District / 11,529 |
| 252. | 40.9 | Boston School District / 639,594 |
| 252. | 40.9 | Triton School District / 21,284 |
| 256. | 40.8 | Cambridge School District / 106,844 |
| 256. | 40.8 | Somerville School District / 77,560 |
| 256. | 40.8 | Arlington School District / 43,728 |
| 256. | 40.8 | Lexington School District / 32,306 |
| 260. | 40.7 | Norwood School District / 28,844 |
| 260. | 40.7 | Sharon School District / 17,879 |
| 260. | 40.7 | Canton School District / 22,036 |
| 260. | 40.7 | Stoughton School District / 27,833 |
| 260. | 40.7 | New Salem-Wendell School District / 1,987 |
| 260. | 40.7 | Gill-Montague School District / 9,967 |
| 260. | 40.7 | Walpole School District / 24,571 |
| 260. | 40.7 | Greenfield School District / 17,484 |
| 268. | 40.6 | Belmont School District / 25,173 |
| 269. | 40.5 | Gill-Montague School District in Erving (7-12) / 1,832 |
| 269. | 40.5 | Chesterfield-Goshen School District / 2,372 |
| 269. | 40.5 | Masconomet School District / 23,664 |
| 269. | 40.5 | Stoneham School District / 21,611 |
| 269. | 40.5 | Ralph C. Mahar School District / 11,057 |
| 269. | 40.5 | Wakefield School District / 25,835 |
| 269. | 40.5 | Topsfield School District / 6,286 |
| 269. | 40.5 | Reading School District / 25,176 |
| 269. | 40.5 | Melrose School District / 27,509 |
| 269. | 40.5 | Lynnfield School District / 12,058 |
| 269. | 40.5 | Erving School District / 1,832 |
| 269. | 40.5 | Lincoln School District / 7,181 |
| 269. | 40.5 | Orange School District / 7,793 |
| 269. | 40.5 | Winchendon School District / 10,466 |
| 269. | 40.5 | Saugus School District / 27,369 |
| 269. | 40.5 | Woburn School District / 38,826 |
| 285. | 40.4 | Georgetown School District / 8,379 |
| 285. | 40.4 | North Reading School District / 15,249 |
| 285. | 40.4 | Boxford School District / 8,105 |
| 288. | 40.2 | Wellesley School District / 28,858 |
| 288. | 40.2 | Waltham School District / 61,908 |
| 288. | 40.2 | Newton School District / 86,945 |
| 288. | 40.2 | Watertown School District / 32,880 |
| 292. | 40.1 | Mohawk Trail School District / 8,603 |
| 292. | 40.1 | Milton School District / 27,204 |
| 292. | 40.1 | Westwood School District / 14,809 |
| 292. | 40.1 | Dedham School District / 25,111 |
| 296. | 40.0 | Quincy School District / 92,920 |
| 297. | 39.8 | Haverhill School District / 61,769 |
| 298. | 39.7 | Pentucket School District / 17,711 |
| 298. | 39.7 | Wayland School District / 13,294 |
| 300. | 39.6 | Chelmsford School District / 34,495 |
| 300. | 39.6 | Hull School District / 10,324 |
| 302. | 39.5 | Lowell School District / 108,491 |
| 302. | 39.5 | Tyngsborough School District / 11,867 |
| 302. | 39.5 | Dracut School District / 30,350 |
| 305. | 39.3 | Tewksbury School District / 29,718 |
| 305. | 39.3 | Andover School District / 34,251 |
| 305. | 39.3 | North Andover School District / 28,963 |
| 308. | 39.1 | Weston School District / 11,704 |
| 308. | 39.1 | Methuen School District / 48,159 |
| 308. | 39.1 | Wilmington School District / 22,907 |
| 308. | 39.1 | Billerica School District / 41,446 |
| 308. | 39.1 | Lawrence School District / 77,364 |
| 308. | 39.1 | Cohasset School District / 8,100 |
| 314. | 38.5 | Athol-Royalston School District / 12,847 |
| 315. | 38.4 | Pioneer Valley School District / 6,549 |
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.
