| Rank | Air Quality Index ▼ | City / Population |
| 1. | 46.4 | Wales, MA |
| 1. | 46.4 | Holland, MA / 1,405 |
| 3. | 46.2 | Great Barrington, MA / 2,324 |
| 4. | 46.1 | Monson Center, MA / 1,935 |
| 4. | 46.1 | Monson, MA |
| 4. | 46.1 | Monterey, MA |
| 7. | 46.0 | Sandisfield, MA |
| 7. | 46.0 | Mill River, MA |
| 9. | 45.9 | Hampden, MA |
| 10. | 45.5 | East Longmeadow, MA |
| 10. | 45.5 | Brimfield, MA |
| 12. | 45.3 | Tyringham, MA |
| 13. | 45.2 | Wilbraham, MA / 3,765 |
| 13. | 45.2 | Ludlow, MA |
| 15. | 45.1 | North Eastham, MA / 1,917 |
| 15. | 45.1 | Truro, MA |
| 15. | 45.1 | South Wellfleet, MA |
| 15. | 45.1 | East Harwich, MA / 4,749 |
| 15. | 45.1 | East Dennis, MA / 2,928 |
| 15. | 45.1 | Harwich, MA |
| 15. | 45.1 | Hyannis, MA |
| 15. | 45.1 | Northwest Harwich, MA / 3,782 |
| 15. | 45.1 | Dennis Port, MA / 2,936 |
| 15. | 45.1 | Dennis, MA / 2,431 |
| 15. | 45.1 | East Sandwich, MA / 3,861 |
| 15. | 45.1 | South Orleans, MA |
| 15. | 45.1 | Yarmouth Port, MA / 4,906 |
| 15. | 45.1 | West Chatham, MA / 1,352 |
| 15. | 45.1 | West Dennis, MA / 2,219 |
| 15. | 45.1 | West Yarmouth, MA / 5,882 |
| 15. | 45.1 | The Pinehills, MA / 1,020 |
| 15. | 45.1 | Harwich Port, MA / 1,772 |
| 15. | 45.1 | Harwich Center, MA / 1,902 |
| 15. | 45.1 | South Chatham, MA |
| 15. | 45.1 | East Orleans, MA |
| 15. | 45.1 | North Chatham, MA |
| 15. | 45.1 | Sagamore Beach, MA |
| 15. | 45.1 | South Yarmouth, MA / 11,482 |
| 15. | 45.1 | South Harwich, MA |
| 15. | 45.1 | South Dennis, MA / 3,599 |
| 15. | 45.1 | Eastham, MA |
| 15. | 45.1 | Centerville, MA |
| 15. | 45.1 | Brewster, MA / 2,306 |
| 15. | 45.1 | Sandwich, MA / 2,847 |
| 15. | 45.1 | West Harwich, MA |
| 15. | 45.1 | Manomet, MA |
| 15. | 45.1 | West Hyannisport, MA |
| 15. | 45.1 | White Horse Beach, MA |
| 15. | 45.1 | Marstons Mills, MA |
| 15. | 45.1 | Sagamore, MA / 3,589 |
| 15. | 45.1 | Barnstable, MA / 47,821 |
| 15. | 45.1 | Barnstable Town, MA / 44,750 |
| 15. | 45.1 | West Barnstable, MA |
| 15. | 45.1 | Cummaquid, MA |
| 15. | 45.1 | Hyannis Port, MA |
| 15. | 45.1 | Orleans, MA / 1,531 |
| 15. | 45.1 | Chatham, MA / 1,470 |
| 15. | 45.1 | Wellfleet, MA |
| 59. | 45.0 | Palmer Town, MA / 12,155 |
| 59. | 45.0 | Bondsville, MA / 1,929 |
| 59. | 45.0 | West Warren, MA |
| 59. | 45.0 | Palmer, MA / 4,170 |
| 59. | 45.0 | Belchertown, MA / 3,010 |
| 59. | 45.0 | Ware, MA / 5,816 |
| 59. | 45.0 | Thorndike, MA |
| 59. | 45.0 | Three Rivers, MA / 3,288 |
| 67. | 44.9 | South Carver, MA |
| 67. | 44.9 | Westport Point, MA |
| 67. | 44.9 | Granville, MA |
| 70. | 44.7 | Sheffield, MA |
| 70. | 44.7 | Longmeadow, MA / 15,858 |
| 70. | 44.7 | West Springfield Town, MA / 28,554 |
| 70. | 44.7 | Feeding Hills, MA |
| 70. | 44.7 | Agawam Town, MA / 28,626 |
| 70. | 44.7 | Siasconset, MA / 200 |
| 70. | 44.7 | Springfield, MA / 153,836 |
| 70. | 44.7 | Ashley Falls, MA |
| 70. | 44.7 | Agawam, MA / 28,599 |
| 70. | 44.7 | West Springfield, MA / 27,899 |
| 80. | 44.6 | South Barre, MA |
| 80. | 44.6 | Wheelwright, MA |
| 80. | 44.6 | Warren, MA / 1,456 |
| 80. | 44.6 | Westport, MA |
| 80. | 44.6 | West Brookfield, MA / 1,352 |
| 80. | 44.6 | Barre, MA / 910 |
| 80. | 44.6 | New Braintree, MA |
| 87. | 44.5 | North Falmouth, MA / 2,957 |
| 87. | 44.5 | Madaket, MA / 273 |
| 87. | 44.5 | Mashpee Neck, MA / 666 |
| 87. | 44.5 | Seconsett Island, MA / 23 |
| 87. | 44.5 | Bourne, MA / 1,148 |
| 87. | 44.5 | Seabrook, MA / 445 |
| 87. | 44.5 | Nantucket, MA / 7,787 |
| 87. | 44.5 | New Seabury, MA / 1,005 |
| 87. | 44.5 | Teaticket, MA / 1,441 |
| 87. | 44.5 | Popponesset, MA / 227 |
| 87. | 44.5 | Popponesset Island, MA / 24 |
| 87. | 44.5 | Monomoscoy Island, MA / 170 |
| 87. | 44.5 | Mashpee, MA |
| 87. | 44.5 | Monument Beach, MA / 3,224 |
| 87. | 44.5 | Glendale, MA |
| 87. | 44.5 | Osterville, MA |
| 87. | 44.5 | Cotuit, MA |
| 87. | 44.5 | Forestdale, MA / 4,381 |
| 87. | 44.5 | Stockbridge, MA |
| 87. | 44.5 | Housatonic, MA / 814 |
| 87. | 44.5 | East Falmouth, MA / 5,818 |
| 87. | 44.5 | Silver Beach, MA |
| 87. | 44.5 | South Lee, MA |
| 87. | 44.5 | Falmouth, MA / 3,785 |
| 87. | 44.5 | Buzzards Bay, MA / 3,176 |
| 87. | 44.5 | Lee, MA / 1,914 |
| 87. | 44.5 | West Stockbridge, MA |
| 87. | 44.5 | Cataumet, MA |
| 115. | 44.5 | Chicopee, MA / 55,603 |
| 115. | 44.5 | Otis, MA |
| 115. | 44.5 | Southbridge Town, MA / 16,775 |
| 115. | 44.5 | Southbridge, MA / 13,068 |
| 115. | 44.5 | East Otis, MA |
| 115. | 44.5 | Indian Orchard, MA |
| 115. | 44.5 | Sturbridge, MA / 2,265 |
| 122. | 44.4 | West Tisbury, MA |
| 122. | 44.4 | Pocasset, MA / 2,932 |
| 122. | 44.4 | South Dartmouth, MA |
| 122. | 44.4 | Dartmouth, MA |
| 122. | 44.4 | North Plymouth, MA / 3,747 |
| 122. | 44.4 | Plymouth, MA / 7,567 |
| 122. | 44.4 | Bliss Corner, MA / 5,908 |
| 122. | 44.4 | Menemsha, MA |
| 122. | 44.4 | Chilmark, MA |
| 122. | 44.4 | North Carver, MA |
| 122. | 44.4 | Plympton, MA |
| 122. | 44.4 | East Wareham, MA |
| 122. | 44.4 | Carver, MA |
| 122. | 44.4 | White Island Shores, MA / 1,917 |
| 136. | 44.3 | South Egremont, MA |
| 136. | 44.3 | Wareham, MA |
| 136. | 44.3 | Onset, MA / 1,068 |
| 136. | 44.3 | North Egremont, MA |
| 136. | 44.3 | Marion, MA |
| 136. | 44.3 | Dudley, MA |
| 136. | 44.3 | Wareham Center, MA / 3,218 |
| 136. | 44.3 | Weweantic, MA / 1,662 |
| 136. | 44.3 | Webster, MA / 12,135 |
| 145. | 44.2 | Lakeville, MA |
| 145. | 44.2 | Middleboro, MA |
| 145. | 44.2 | North Lakeville, MA / 2,409 |
| 145. | 44.2 | East Taunton, MA |
| 145. | 44.2 | Middleborough Center, MA / 7,432 |
| 150. | 44.1 | Edgartown, MA / 999 |
| 150. | 44.1 | Becket, MA |
| 150. | 44.1 | Oak Bluffs, MA |
| 150. | 44.1 | West Chop, MA |
| 150. | 44.1 | Cuttyhunk, MA |
| 150. | 44.1 | Rochester, MA |
| 150. | 44.1 | West Wareham, MA / 3,070 |
| 150. | 44.1 | Vineyard Haven, MA / 2,384 |
| 150. | 44.1 | Woods Hole, MA / 953 |
| 159. | 44.0 | North Brookfield, MA / 2,079 |
| 159. | 44.0 | Rutland, MA / 2,478 |
| 159. | 44.0 | Westminster, MA |
| 159. | 44.0 | Fiskdale, MA / 2,213 |
| 159. | 44.0 | Spencer, MA / 5,670 |
| 159. | 44.0 | East Brookfield, MA / 1,312 |
| 159. | 44.0 | Paxton, MA |
| 159. | 44.0 | Hubbardston, MA |
| 159. | 44.0 | Templeton, MA |
| 159. | 44.0 | Brookfield, MA / 902 |
| 159. | 44.0 | Oakham, MA |
| 170. | 43.8 | East Templeton, MA |
| 170. | 43.8 | Marion Center, MA / 1,176 |
| 170. | 43.8 | Gardner, MA / 20,279 |
| 170. | 43.8 | Mendon, MA |
| 174. | 43.7 | Oxford, MA / 6,525 |
| 174. | 43.7 | Rochdale, MA |
| 174. | 43.7 | Blackstone, MA |
| 174. | 43.7 | North Oxford, MA |
| 174. | 43.7 | Millville, MA |
| 174. | 43.7 | Southwick, MA |
| 174. | 43.7 | Leicester, MA |
| 174. | 43.7 | Charlton, MA |
| 174. | 43.7 | Charlton Depot, MA |
| 174. | 43.7 | Charlton City, MA |
| 184. | 43.6 | Nahant, MA / 3,451 |
| 184. | 43.6 | Acushnet Center, MA / 2,786 |
| 186. | 43.5 | Raynham Center, MA / 4,480 |
| 186. | 43.5 | Berkley, MA |
| 186. | 43.5 | Raynham, MA |
| 186. | 43.5 | Norton, MA |
| 186. | 43.5 | Swansea, MA |
| 186. | 43.5 | Norton Center, MA / 2,870 |
| 186. | 43.5 | Chartley, MA |
| 186. | 43.5 | Taunton, MA / 56,056 |
| 186. | 43.5 | Somerset, MA / 18,262 |
| 186. | 43.5 | Mansfield, MA |
| 186. | 43.5 | Ocean Grove, MA / 2,674 |
| 197. | 43.5 | North Truro, MA |
| 197. | 43.5 | Assonet, MA |
| 197. | 43.5 | Dighton, MA |
| 197. | 43.5 | Rehoboth, MA |
| 197. | 43.5 | East Freetown, MA |
| 197. | 43.5 | Fall River, MA / 88,756 |
| 197. | 43.5 | Acushnet, MA |
| 197. | 43.5 | North Dighton, MA |
| 197. | 43.5 | Provincetown, MA / 2,777 |
| 197. | 43.5 | North Westport, MA / 4,540 |
| 197. | 43.5 | North Dartmouth, MA |
| 208. | 43.4 | Wrentham, MA |
| 208. | 43.4 | Sheldonville, MA |
| 208. | 43.4 | Attleboro Falls, MA |
| 208. | 43.4 | Plainville, MA |
| 208. | 43.4 | Bellingham, MA / 5,055 |
| 208. | 43.4 | Attleboro, MA / 43,774 |
| 208. | 43.4 | Franklin, MA / 31,247 |
| 208. | 43.4 | North Seekonk, MA / 2,660 |
| 208. | 43.4 | North Attleboro, MA |
| 208. | 43.4 | Franklin Town, MA / 32,393 |
| 218. | 43.3 | Rockland, MA |
| 218. | 43.3 | Holbrook, MA / 10,925 |
| 218. | 43.3 | Hanson, MA / 1,718 |
| 218. | 43.3 | Abington, MA / 16,081 |
| 218. | 43.3 | East Bridgewater, MA |
| 218. | 43.3 | West Bridgewater, MA |
| 218. | 43.3 | Monponsett, MA |
| 218. | 43.3 | South Weymouth, MA |
| 218. | 43.3 | Kingston, MA / 6,103 |
| 218. | 43.3 | Southfield, MA |
| 218. | 43.3 | Avon, MA |
| 218. | 43.3 | Bryantville, MA |
| 218. | 43.3 | Whitman, MA |
| 218. | 43.3 | Beverly, MA / 40,370 |
| 218. | 43.3 | Manchester, MA |
| 218. | 43.3 | Brockton, MA / 94,267 |
| 218. | 43.3 | Randolph, MA / 33,135 |
| 218. | 43.3 | Pembroke, MA |
| 218. | 43.3 | Prides Crossing, MA |
| 218. | 43.3 | Halifax, MA |
| 218. | 43.3 | Elmwood, MA |
| 239. | 43.2 | Revere, MA / 53,258 |
| 239. | 43.2 | Peabody, MA / 51,868 |
| 239. | 43.2 | Linwood, MA |
| 239. | 43.2 | Uxbridge, MA |
| 239. | 43.2 | Bridgewater, MA / 8,374 |
| 239. | 43.2 | Mattapoisett, MA |
| 239. | 43.2 | East Douglas, MA / 2,912 |
| 239. | 43.2 | Swampscott, MA / 13,912 |
| 239. | 43.2 | North Uxbridge, MA |
| 239. | 43.2 | Foxboro, MA |
| 239. | 43.2 | Fairhaven, MA |
| 239. | 43.2 | Mattapoisett Center, MA / 3,199 |
| 239. | 43.2 | New Bedford, MA / 94,873 |
| 239. | 43.2 | Marblehead, MA / 20,163 |
| 239. | 43.2 | Mansfield Center, MA / 7,861 |
| 239. | 43.2 | Easton, MA |
| 239. | 43.2 | Salem, MA / 42,321 |
| 239. | 43.2 | West Falmouth, MA / 1,967 |
| 239. | 43.2 | Lynn, MA / 91,289 |
| 239. | 43.2 | South Easton, MA |
| 239. | 43.2 | Douglas, MA |
| 239. | 43.2 | Foxborough, MA / 5,013 |
| 261. | 43.1 | Seekonk, MA |
| 262. | 43.0 | Brant Rock, MA |
| 262. | 43.0 | Green Harbor, MA |
| 262. | 43.0 | North Marshfield, MA |
| 262. | 43.0 | Norwell, MA |
| 262. | 43.0 | Norfolk, MA |
| 262. | 43.0 | Hanover, MA |
| 262. | 43.0 | Green Harbor-Cedar Crest, MA / 2,782 |
| 262. | 43.0 | Ocean Bluff, MA |
| 262. | 43.0 | Humarock, MA |
| 262. | 43.0 | Ocean Bluff-Brant Rock, MA / 5,198 |
| 262. | 43.0 | Duxbury, MA / 1,197 |
| 262. | 43.0 | Smith Mills, MA / 4,741 |
| 262. | 43.0 | South Duxbury, MA / 3,752 |
| 262. | 43.0 | Marshfield, MA / 4,227 |
| 262. | 43.0 | North Pembroke, MA / 3,313 |
| 277. | 42.8 | South Hamilton, MA |
| 277. | 42.8 | Essex, MA / 1,733 |
| 277. | 42.8 | Pittsfield, MA / 44,226 |
| 277. | 42.8 | Gloucester, MA / 29,237 |
| 277. | 42.8 | Rockport, MA / 4,832 |
| 277. | 42.8 | Richmond, MA |
| 277. | 42.8 | Lenox, MA / 1,655 |
| 277. | 42.8 | Lenox Dale, MA |
| 285. | 42.6 | Ashby, MA |
| 285. | 42.6 | Wenham, MA |
| 285. | 42.6 | Cheshire, MA / 571 |
| 285. | 42.6 | Hamilton, MA |
| 285. | 42.6 | Lanesboro, MA |
| 285. | 42.6 | Dalton, MA |
| 285. | 42.6 | Berkshire, MA |
| 292. | 42.5 | South Ashburnham, MA / 1,042 |
| 293. | 42.5 | Heath, MA |
| 293. | 42.5 | Middlefield, MA |
| 293. | 42.5 | Hinsdale, MA |
| 293. | 42.5 | Cummington, MA |
| 293. | 42.5 | Ipswich, MA / 4,003 |
| 293. | 42.5 | Colrain, MA |
| 293. | 42.5 | Worthington, MA |
| 300. | 42.4 | Blandford, MA / 425 |
| 300. | 42.4 | Plainfield, MA |
| 300. | 42.4 | Charlemont, MA |
| 300. | 42.4 | Sherborn, MA |
| 300. | 42.4 | Westfield, MA / 41,371 |
| 300. | 42.4 | Woronoco, MA |
| 300. | 42.4 | Russell, MA / 544 |
| 307. | 42.3 | Medway, MA |
| 307. | 42.3 | Natick, MA |
| 309. | 42.2 | North Adams, MA / 13,563 |
| 309. | 42.2 | Milford, MA / 25,422 |
| 309. | 42.2 | West Concord, MA / 7,085 |
| 309. | 42.2 | Adams, MA / 5,460 |
| 309. | 42.2 | Rowe, MA |
| 309. | 42.2 | Monroe Bridge, MA |
| 315. | 42.1 | Windsor, MA |
| 315. | 42.1 | Savoy, MA |
| 315. | 42.1 | North Weymouth, MA |
| 315. | 42.1 | Drury, MA |
| 315. | 42.1 | Hardwick, MA |
| 315. | 42.1 | Williamstown, MA / 4,173 |
| 321. | 42.0 | Northbridge, MA |
| 321. | 42.0 | Manchaug, MA |
| 321. | 42.0 | West Townsend, MA |
| 321. | 42.0 | Jefferson, MA |
| 321. | 42.0 | North Grafton, MA |
| 321. | 42.0 | Petersham, MA / 269 |
| 321. | 42.0 | New Salem, MA |
| 321. | 42.0 | Holliston, MA |
| 321. | 42.0 | Upton, MA / 3,319 |
| 321. | 42.0 | Grafton, MA |
| 321. | 42.0 | Gilbertville, MA |
| 321. | 42.0 | Holden, MA |
| 321. | 42.0 | Burlington, MA / 25,190 |
| 321. | 42.0 | Hopedale, MA / 3,858 |
| 321. | 42.0 | Millbury, MA |
| 321. | 42.0 | Shrewsbury, MA |
| 321. | 42.0 | Framingham, MA / 69,900 |
| 321. | 42.0 | South Grafton, MA |
| 321. | 42.0 | Cherry Valley, MA |
| 321. | 42.0 | Fitchburg, MA / 40,419 |
| 321. | 42.0 | Auburn, MA |
| 321. | 42.0 | West Boylston, MA |
| 321. | 42.0 | Sutton, MA |
| 321. | 42.0 | West Millbury, MA |
| 321. | 42.0 | Boylston, MA |
| 321. | 42.0 | Worcester, MA / 182,511 |
| 321. | 42.0 | Winthrop, MA / 18,605 |
| 321. | 42.0 | Whitinsville, MA / 6,478 |
| 321. | 42.0 | Winthrop Town, MA / 17,992 |
| 321. | 42.0 | Princeton, MA |
| 321. | 42.0 | East Princeton, MA |
| 321. | 42.0 | Sterling, MA |
| 353. | 41.9 | West Roxbury, MA |
| 353. | 41.9 | Braintree, MA / 34,466 |
| 353. | 41.9 | Dover, MA / 2,249 |
| 353. | 41.9 | Braintree Town, MA / 36,543 |
| 353. | 41.9 | Holyoke, MA / 40,079 |
| 353. | 41.9 | Townsend, MA / 1,227 |
| 359. | 41.8 | Easthampton Town, MA / 16,066 |
| 359. | 41.8 | South Hadley, MA |
| 359. | 41.8 | Easthampton, MA / 16,176 |
| 359. | 41.8 | Boston, MA / 639,594 |
| 363. | 41.7 | Littleton Common, MA / 2,845 |
| 363. | 41.7 | Village Of Nagog Woods, MA |
| 363. | 41.7 | Lancaster, MA |
| 363. | 41.7 | Clinton, MA / 7,488 |
| 363. | 41.7 | Leominster, MA / 40,954 |
| 363. | 41.7 | Hopkinton, MA / 2,509 |
| 363. | 41.7 | Salisbury, MA / 4,757 |
| 363. | 41.7 | Southborough, MA |
| 363. | 41.7 | Northborough, MA / 6,613 |
| 363. | 41.7 | Still River, MA |
| 363. | 41.7 | Hudson, MA / 15,212 |
| 363. | 41.7 | Littleton, MA |
| 363. | 41.7 | South Lancaster, MA / 1,812 |
| 363. | 41.7 | Woodville, MA |
| 363. | 41.7 | Harvard, MA |
| 363. | 41.7 | Westborough, MA / 4,061 |
| 363. | 41.7 | Boxborough, MA |
| 363. | 41.7 | Berlin, MA |
| 363. | 41.7 | Bolton, MA |
| 382. | 41.6 | Malden, MA / 60,309 |
| 382. | 41.6 | Florence, MA |
| 382. | 41.6 | Greenbush, MA |
| 382. | 41.6 | Hingham, MA / 5,199 |
| 382. | 41.6 | Huntington, MA / 785 |
| 382. | 41.6 | Accord, MA |
| 382. | 41.6 | Weymouth Town, MA / 54,815 |
| 382. | 41.6 | East Weymouth, MA |
| 382. | 41.6 | Weymouth, MA / 53,602 |
| 382. | 41.6 | Northampton, MA / 28,637 |
| 382. | 41.6 | Marshfield Hills, MA / 2,423 |
| 382. | 41.6 | North Scituate, MA / 4,962 |
| 382. | 41.6 | Chesterfield, MA |
| 382. | 41.6 | Sudbury, MA |
| 382. | 41.6 | Leeds, MA |
| 382. | 41.6 | Scituate, MA / 5,623 |
| 382. | 41.6 | Southampton, MA |
| 399. | 41.5 | Needham, MA / 29,540 |
| 399. | 41.5 | Stow, MA |
| 399. | 41.5 | Ashburnham, MA |
| 399. | 41.5 | Carlisle, MA |
| 399. | 41.5 | Acton, MA |
| 404. | 41.5 | North Waltham, MA |
| 404. | 41.5 | Westford, MA |
| 404. | 41.5 | Shirley, MA / 1,321 |
| 404. | 41.5 | Marlborough, MA / 39,141 |
| 404. | 41.5 | Ayer, MA / 2,930 |
| 404. | 41.5 | West Groton, MA |
| 404. | 41.5 | Cordaville, MA / 2,550 |
| 404. | 41.5 | Lunenburg, MA / 1,831 |
| 404. | 41.5 | Groton, MA / 939 |
| 404. | 41.5 | Pepperell, MA / 2,361 |
| 404. | 41.5 | Dunstable, MA |
| 404. | 41.5 | East Boston, MA |
| 404. | 41.5 | East Pepperell, MA / 1,967 |
| 404. | 41.5 | Readville, MA |
| 404. | 41.5 | Devens, MA / 1,745 |
| 404. | 41.5 | Fayville, MA |
| 420. | 41.4 | Brookline, MA / 59,016 |
| 420. | 41.4 | Ashland, MA |
| 420. | 41.4 | Brookline Village, MA |
| 420. | 41.4 | Chestnut Hill, MA |
| 424. | 41.3 | Maynard, MA / 10,314 |
| 424. | 41.3 | Chelsea, MA / 37,084 |
| 424. | 41.3 | Medford, MA / 56,981 |
| 424. | 41.3 | Everett, MA / 42,758 |
| 424. | 41.3 | Charlestown, MA |
| 424. | 41.3 | Winchester, MA / 21,863 |
| 430. | 41.2 | Concord, MA |
| 430. | 41.2 | Bedford, MA |
| 430. | 41.2 | Millis-Clicquot, MA / 4,260 |
| 430. | 41.2 | Chester, MA / 727 |
| 430. | 41.2 | Hanscom Afb, MA |
| 430. | 41.2 | Rowley, MA / 1,444 |
| 430. | 41.2 | Granby, MA / 1,514 |
| 430. | 41.2 | Millis, MA |
| 430. | 41.2 | Danvers, MA / 27,075 |
| 439. | 41.1 | South Deerfield, MA / 1,733 |
| 439. | 41.1 | Sunderland, MA |
| 439. | 41.1 | Amherst Center, MA / 19,543 |
| 439. | 41.1 | Amherst, MA |
| 439. | 41.1 | Shutesbury, MA |
| 439. | 41.1 | Deerfield, MA / 818 |
| 439. | 41.1 | North Amherst, MA / 7,517 |
| 439. | 41.1 | Leverett, MA |
| 439. | 41.1 | South Amherst, MA / 5,267 |
| 448. | 41.0 | Hadley, MA |
| 448. | 41.0 | Hatfield, MA / 1,420 |
| 448. | 41.0 | Conway, MA |
| 448. | 41.0 | West Hatfield, MA |
| 448. | 41.0 | Medfield, MA / 5,964 |
| 448. | 41.0 | North Hatfield, MA |
| 448. | 41.0 | Williamsburg, MA |
| 448. | 41.0 | Haydenville, MA |
| 448. | 41.0 | Whately, MA |
| 457. | 40.9 | Merrimac, MA |
| 457. | 40.9 | Middleton, MA |
| 457. | 40.9 | Roxbury Crossing, MA |
| 457. | 40.9 | Roxbury, MA |
| 457. | 40.9 | Amesbury Town, MA / 16,554 |
| 457. | 40.9 | Amesbury, MA / 12,225 |
| 457. | 40.9 | Newburyport, MA / 17,662 |
| 457. | 40.9 | Jamaica Plain, MA |
| 457. | 40.9 | Hathorne, MA |
| 457. | 40.9 | Newbury, MA |
| 457. | 40.9 | Byfield, MA |
| 457. | 40.9 | South Walpole, MA |
| 469. | 40.8 | Arlington Heights, MA |
| 469. | 40.8 | West Medford, MA |
| 469. | 40.8 | Somerville, MA / 77,560 |
| 469. | 40.8 | Waverley, MA |
| 469. | 40.8 | Cambridge, MA / 106,844 |
| 469. | 40.8 | Arlington, MA / 43,728 |
| 469. | 40.8 | Lexington, MA / 32,306 |
| 476. | 40.7 | Sharon, MA / 6,010 |
| 476. | 40.7 | Stoughton, MA |
| 476. | 40.7 | Lake Pleasant, MA |
| 476. | 40.7 | West Newbury, MA |
| 476. | 40.7 | Wendell, MA |
| 476. | 40.7 | Canton, MA |
| 476. | 40.7 | Greenfield Town, MA / 17,484 |
| 476. | 40.7 | Turners Falls, MA / 4,719 |
| 476. | 40.7 | Norwood, MA / 28,844 |
| 476. | 40.7 | East Walpole, MA |
| 476. | 40.7 | Walpole, MA / 5,910 |
| 476. | 40.7 | Greenfield, MA / 13,128 |
| 476. | 40.7 | Millers Falls, MA / 855 |
| 476. | 40.7 | North Easton, MA |
| 476. | 40.7 | Montague, MA |
| 491. | 40.6 | Athol, MA / 8,340 |
| 491. | 40.6 | Belmont, MA / 25,173 |
| 493. | 40.5 | Lincoln, MA |
| 493. | 40.5 | Baldwinville, MA / 2,327 |
| 493. | 40.5 | Erving, MA |
| 493. | 40.5 | Saugus, MA / 27,369 |
| 493. | 40.5 | Wendell Depot, MA |
| 493. | 40.5 | Winchendon, MA / 3,714 |
| 493. | 40.5 | West Chesterfield, MA |
| 493. | 40.5 | Wakefield, MA / 25,835 |
| 493. | 40.5 | Melrose, MA / 27,509 |
| 493. | 40.5 | Lynnfield, MA / 12,058 |
| 493. | 40.5 | Woburn, MA / 38,826 |
| 493. | 40.5 | Stoneham, MA / 21,611 |
| 493. | 40.5 | Reading, MA / 25,176 |
| 493. | 40.5 | Winchendon Springs, MA |
| 493. | 40.5 | Topsfield, MA / 2,983 |
| 493. | 40.5 | Orange, MA / 3,944 |
| 509. | 40.4 | North Reading, MA |
| 509. | 40.4 | Georgetown, MA |
| 509. | 40.4 | Boxford, MA / 2,228 |
| 512. | 40.2 | New Town, MA |
| 512. | 40.2 | West Newton, MA |
| 512. | 40.2 | Auburndale, MA |
| 512. | 40.2 | Wellesley Hills, MA |
| 512. | 40.2 | Newton, MA / 86,945 |
| 512. | 40.2 | Newton Center, MA |
| 512. | 40.2 | Newton Highlands, MA |
| 512. | 40.2 | Nonantum, MA |
| 512. | 40.2 | Newtonville, MA |
| 512. | 40.2 | Allston, MA |
| 512. | 40.2 | Waban, MA |
| 512. | 40.2 | Brighton, MA |
| 512. | 40.2 | Newton Upper Falls, MA |
| 512. | 40.2 | Waltham, MA / 61,908 |
| 512. | 40.2 | Newton Lower Falls, MA |
| 512. | 40.2 | Watertown, MA / 32,880 |
| 512. | 40.2 | Wellesley, MA / 28,858 |
| 512. | 40.2 | Babson Park, MA |
| 512. | 40.2 | Goshen, MA |
| 512. | 40.2 | Hull, MA / 10,324 |
| 512. | 40.2 | Needham Heights, MA |
| 533. | 40.1 | Shelburne Falls, MA / 1,699 |
| 533. | 40.1 | Westwood, MA |
| 533. | 40.1 | Ashfield, MA |
| 533. | 40.1 | Buckland, MA |
| 533. | 40.1 | Dedham, MA / 25,111 |
| 533. | 40.1 | Milton, MA / 27,204 |
| 533. | 40.1 | Hyde Park, MA |
| 540. | 40.0 | Quincy, MA / 92,920 |
| 541. | 39.9 | North Billerica, MA |
| 542. | 39.8 | West Boxford, MA |
| 542. | 39.8 | Groveland, MA |
| 542. | 39.8 | Weston, MA |
| 542. | 39.8 | Haverhill, MA / 61,769 |
| 546. | 39.7 | Wayland, MA |
| 546. | 39.7 | Cochituate, MA / 6,637 |
| 548. | 39.6 | Chelmsford, MA |
| 548. | 39.6 | Tyngsboro, MA |
| 548. | 39.6 | North Chelmsford, MA |
| 551. | 39.5 | Dracut, MA |
| 551. | 39.5 | Lowell, MA / 108,491 |
| 553. | 39.5 | North Andover, MA |
| 554. | 39.4 | Tewksbury, MA |
| 554. | 39.4 | Lawrence, MA / 77,364 |
| 556. | 39.3 | Pinehurst, MA / 7,452 |
| 556. | 39.3 | Andover, MA / 8,953 |
| 558. | 39.1 | Wilmington, MA / 22,907 |
| 558. | 39.1 | Billerica, MA |
| 558. | 39.1 | Methuen, MA / 48,159 |
| 558. | 39.1 | Nutting Lake, MA |
| 562. | 38.6 | Royalston, MA |
| 563. | 38.4 | Northfield, MA / 1,060 |
| 563. | 38.4 | Bernardston, MA |
| 563. | 38.4 | Cohasset, MA |
| 563. | 38.4 | Minot, MA |
| 563. | 38.4 | Gill, MA |
| 563. | 38.4 | Warwick, MA |
| 569. | 37.7 | Dorchester Center, MA |
| 569. | 37.7 | Mattapan, MA |
| 569. | 37.7 | Milton Village, MA |
| 572. | 37.6 | Dorchester, MA |
| 572. | 37.6 | Roslindale, MA |
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.
