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Air quality in Massachusetts
Air quality index (AQI) and PM2.5 air pollution in Massachusetts
LIVE AQI CITY RANKING
Real-time Massachusetts
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Brockton | 31 |
| 2 | Fall River | 31 |
| 3 | Weymouth | 31 |
| 4 | Ware | 28 |
| 5 | Lynn | 26 |
| 6 | Pittsfield | 26 |
| 7 | Roxbury | 26 |
| 8 | Chicopee | 25 |
| 9 | Worcester | 25 |
| 10 | Melrose | 21 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
177 Contributors
See all
LIVE AQI CITY RANKING
Real-time Massachusetts
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | East Longmeadow | 0 |
| 2 | Freetown | 0 |
| 3 | Longmeadow | 0 |
| 4 | Scituate | 0 |
| 5 | Swansea | 0 |
| 6 | Acushnet | 1 |
| 7 | Buckland | 1 |
| 8 | Hanover | 1 |
| 9 | Holbrook | 1 |
| 10 | Middleborough | 1 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Unhealthy for sensitive groups
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The latest air quality news and resources.
Massachusetts air quality data attribution
177Contributors
Government Contributor
- Alex Vandiver
1 station
- IQAir community Member
1 station
- Kathie Tryon
1 station
- Rowley MA Dodge
1 station
4 Individual Contributors
- 172 Anonymous contributors
172 stations
172 Anonymous Contributors
Which is the most polluted city in Massachusetts?
- Adams 37
- Dalton 37
- Lanesborough 37
- Richmond 37
- West Stockbridge 37
- Hinsdale 36
- Housatonic 36
- Lee 36
- Lenox 36
- Stockbridge 36
- Ashfield 35
- Becket 35
- Charlemont 35
- Chesterfield 35
- Colrain 35
- Sheffield 35
- Shelburne 35
- Bernardston 34
- Conway 34
- Williamsburg 34
- Aquinnah 33
- Montague 33
- Northfield 33
- South Deerfield 33
- Turners Falls 33
- Whately 33
- Millers Falls 32
- Westhampton 32
- Brockton 31
- Fall River 31
- Hatfield 31
- North Amherst 31
- Weymouth 31
- Amherst Center 30
- Barnstable 30
- Erving 30
- Fairhaven 30
- Hadley 30
- Leverett 30
- Southampton 30
- North Chelmsford 29
- Wendell 29
- Orange 28
- Shutesbury 28
- South Amherst 28
- Ware 28
- Granville 27
- South Hadley 27
- Granby 26
- Lynn 26
- Pelham 26
- Pittsfield 26
- Roxbury 26
- Southwick 26
- Athol 25
- Chicopee 25
- North Chicopee 25
- Royalston 25
- Worcester 25
- West Springfield 24
- Belchertown 23
- Agawam 22
- Ludlow 22
- Phillipston 22
- Baldwinville 21
- Melrose 21
- Winchendon 21
- Bondsville 20
- Three Rivers 20
- Wilbraham 20
- Attleboro 19
- Gardner 19
- Hardwick 19
- Hampden 18
- Palmer 18
- Ashburnham 17
- Hubbardston 17
- Monson 17
- Monson Center 17
- Oakham 17
- South Ashburnham 17
- Warren 17
- West Brookfield 17
- Ashby 16
- Brimfield 16
- Medfield 16
- North Brookfield 16
- Sunderland 16
- Wales 16
- Westminster 16
- East Brookfield 15
- Fiskdale 15
- Fitchburg 15
- Holland 15
- Leominster 15
- Paxton 15
- Princeton 15
- Rutland 15
- Spencer 15
- Swampscott 15
- Arlington 14
- Boylston 14
- Charlton 14
- Clinton 14
- Devens 14
- East Pepperell 14
- Groton 14
- Leicester 14
- Lunenburg 14
- Medford 14
- Shirley 14
- South Lancaster 14
- Southbridge 14
- Sterling 14
- Sturbridge 14
- Wakefield 14
- West Boylston 14
- Ashland 13
- Auburn 13
- Berlin 13
- Bolton 13
- Boxborough 13
- Cordaville 13
- Douglas 13
- Dudley 13
- Dunstable 13
- East Douglas 13
- Easthampton 13
- Framingham 13
- Framingham Center 13
- Grafton 13
- Hamilton 13
- Hopedale 13
- Hopkinton 13
- Hudson 13
- Littleton Common 13
- Lowell 13
- Marlborough 13
- Mendon 13
- Merrimac 13
- Methuen 13
- Millbury 13
- North Adams 13
- Northbridge 13
- Otis 13
- Sudbury 13
- Sutton 13
- Tewksbury 13
- Tyngsboro 13
- Wayland 13
- Webster 13
- Wellesley 13
- West Bridgewater 13
- West Concord 13
- Westborough 13
- Westford 13
- Whitinsville 13
- Belmont 12
- Blackstone 12
- Burlington 12
- Chelsea 12
- Cochituate 12
- Dover 12
- Franklin 12
- Gill 12
- Haverhill 12
- Holliston 12
- Lincoln 12
- Medway 12
- Millis 12
- Millis-Clicquot 12
- Millville 12
- Norfolk 12
- North Andover 12
- Pinehurst 12
- Somerville 12
- Springfield 12
- Watertown 12
- Wilmington 12
- Winchester 12
- Woburn 12
- Amesbury 11
- Assonet 11
- Avon 11
- Ayer 11
- Bedford 11
- Berkley 11
- Bliss Corner 11
- Bourne 11
- Canton 11
- Dedham 11
- Dighton 11
- Easton 11
- Everett 11
- Foxborough 11
- Groveland 11
- Head of Westport 11
- Jamaica Plain 11
- Malden 11
- Mansfield 11
- Mansfield Center 11
- Maynard 11
- Needham 11
- New Bedford 11
- North Attleborough Center 11
- North Lakeville 11
- North Seekonk 11
- North Westport 11
- Norton 11
- Norton Center 11
- Norwood 11
- Ocean Grove 11
- Plainville 11
- Plymouth 11
- Randolph 11
- Raynham 11
- Raynham Center 11
- Reading 11
- Rehoboth 11
- Seekonk 11
- Smith Mills 11
- South Boston 11
- Stoneham 11
- Stoughton 11
- Taunton 11
- Walpole 11
- West Tisbury 11
- Wrentham 11
- Abington 10
- Acushnet Center 10
- Boston 10
- Boxford 10
- Bridgewater 10
- Brookline 10
- Carlisle 10
- Carver 10
- East Bridgewater 10
- East Falmouth 10
- Falmouth 10
- Halifax 10
- Holyoke 10
- Lexington 10
- Lynnfield 10
- Marion 10
- Marion Center 10
- Mattapoisett 10
- Mattapoisett Center 10
- Middleborough Center 10
- Middleton 10
- Milford 10
- North Falmouth 10
- North Reading 10
- Oxford 10
- Plympton 10
- Revere 10
- Rochester 10
- Rockland 10
- Sharon 10
- Shrewsbury 10
- Stow 10
- Teaticket 10
- Uxbridge 10
- Vineyard Haven 10
- Wareham Center 10
- West Falmouth 10
- West Newbury 10
- West Wareham 10
- Weston 10
- Weweantic 10
- Whitman 10
- Winthrop 10
- Beverly 9
- Beverly Cove 9
- Buzzards Bay 9
- Centerville 9
- Cohasset 9
- Cotuit 9
- Danvers 9
- Duxbury 9
- East Sandwich 9
- Edgartown 9
- Essex 9
- Forestdale 9
- Gloucester 9
- Green Harbor-Cedar Crest 9
- Hingham 9
- Hull 9
- Hyannis 9
- Ipswich 9
- Kingston 9
- Manchester-by-the-Sea 9
- Marshfield 9
- Marshfield Hills 9
- Marstons Mills 9
- Mashpee 9
- Monument Beach 9
- Nahant 9
- Newburyport 9
- North Pembroke 9
- North Plymouth 9
- North Scituate 9
- Northampton 9
- Ocean Bluff-Brant Rock 9
- Onset 9
- Osterville 9
- Pocasset 9
- Rockport 9
- Rowley 9
- Sagamore 9
- Salisbury 9
- Sherborn 9
- South Duxbury 9
- South Peabody 9
- Topsfield 9
- Wenham 9
- West Barnstable 9
- White Island Shores 9
- Dennis 8
- Great Barrington 8
- Hanson 8
- Lancaster 8
- Milton 8
- Newton 8
- Provincetown 8
- Saugus 8
- South Dennis 8
- South Yarmouth 8
- Upton 8
- West Dennis 8
- West Yarmouth 8
- Yarmouth 8
- Yarmouth Port 8
- Andover 7
- Brewster 7
- Chelmsford 7
- Dennis Port 7
- East Dennis 7
- Harvard 7
- Harwich 7
- Harwich Center 7
- Harwich Port 7
- North Eastham 7
- Northwest Harwich 7
- Norwell 7
- Oak Bluffs 7
- Sandwich 7
- Truro 7
- Wellfleet 7
- Westwood 7
- Williamstown 7
- Bellingham 6
- Dracut 6
- East Harwich 6
- Eastham 6
- Greenfield 6
- Lawrence 6
- Nantucket 6
- New Marlborough 6
- Orleans 6
- Pepperell 6
- Quincy 6
- Salem 6
- Waltham 6
- West Chatham 6
- Westfield 6
- Acton 5
- Amherst 5
- Billerica 5
- Cambridge 5
- Somerset 5
- Southborough 5
- Townsend 5
- Barre 4
- Braintree 4
- Natick 4
- Northborough 4
- Marblehead 3
- Peabody 3
- Concord 2
- Holden 2
- Shelburne Falls 2
- Acushnet 1
- Buckland 1
- Hanover 1
- Holbrook 1
- Middleborough 1
- Templeton 1
- Chatham 0
- East Longmeadow 0
- Freetown 0
- Longmeadow 0
- Scituate 0
- Swansea 0
AQI US, Metric