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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 | Ware | 39 |
| 2 | Andover | 38 |
| 3 | Brockton | 38 |
| 4 | Lynn | 38 |
| 5 | Otis | 38 |
| 6 | Pittsfield | 38 |
| 7 | Amesbury | 37 |
| 8 | Fall River | 37 |
| 9 | North Reading | 37 |
| 10 | Williamstown | 37 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
185 Contributors
See all
LIVE AQI CITY RANKING
Real-time Massachusetts
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Acushnet | 6 |
| 2 | Swansea | 6 |
| 3 | Somerset | 10 |
| 4 | Townsend | 10 |
| 5 | Edgartown | 11 |
| 6 | Freetown | 11 |
| 7 | Nantucket | 12 |
| 8 | Oak Bluffs | 12 |
| 9 | Marblehead | 13 |
| 10 | Westwood | 13 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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The latest air quality news and resources.
Massachusetts air quality data attribution
185Contributors
Government Contributor
- Alex Vandiver
1 station
- IQAir community Member
1 station
- Kathie Tryon
1 station
- Rowley MA Dodge
1 station
4 Individual Contributors
- 180 Anonymous contributors
180 stations
180 Anonymous Contributors
Which is the most polluted city in Massachusetts?
- Adams 45
- Bernardston 45
- Charlemont 45
- Colrain 45
- Lanesborough 45
- Northfield 45
- Shelburne 45
- Ashfield 44
- Dalton 44
- Turners Falls 44
- Conway 43
- Erving 43
- Hinsdale 43
- Millers Falls 43
- Montague 43
- Orange 43
- Richmond 43
- Royalston 43
- Athol 42
- Lenox 42
- Leverett 42
- South Deerfield 42
- Wendell 42
- West Stockbridge 42
- Winchendon 42
- Ashburnham 41
- Ashby 41
- Baldwinville 41
- Becket 41
- Chesterfield 41
- Dracut 41
- Dunstable 41
- East Pepperell 41
- Groton 41
- Housatonic 41
- Lee 41
- Littleton Common 41
- Lowell 41
- Lunenburg 41
- Methuen 41
- North Amherst 41
- North Andover 41
- North Chelmsford 41
- Phillipston 41
- Shutesbury 41
- South Ashburnham 41
- Stockbridge 41
- Tewksbury 41
- Tyngsboro 41
- Westford 41
- Whately 41
- Williamsburg 41
- Agawam 40
- Amherst Center 40
- Belchertown 40
- Bondsville 40
- Boxborough 40
- Devens 40
- Fitchburg 40
- Gardner 40
- Granby 40
- Hadley 40
- Hampden 40
- Hardwick 40
- Hatfield 40
- Haverhill 40
- Hubbardston 40
- Leominster 40
- Ludlow 40
- North Chicopee 40
- Palmer 40
- Pelham 40
- Pinehurst 40
- Princeton 40
- Shirley 40
- South Amherst 40
- South Hadley 40
- Southampton 40
- Three Rivers 40
- West Concord 40
- West Springfield 40
- Westhampton 40
- Westminster 40
- Wilbraham 40
- Wilmington 40
- Bolton 39
- Brimfield 39
- Burlington 39
- Clinton 39
- Concord 39
- Granville 39
- Groveland 39
- Holland 39
- Hudson 39
- Lincoln 39
- Monson 39
- Monson Center 39
- New Marlborough 39
- North Brookfield 39
- Oakham 39
- Paxton 39
- Rutland 39
- Sheffield 39
- South Lancaster 39
- Southwick 39
- Sterling 39
- Wales 39
- Ware 39
- Warren 39
- West Brookfield 39
- Andover 38
- Auburn 38
- Belmont 38
- Berlin 38
- Boxford 38
- Boylston 38
- Brockton 38
- Charlton 38
- Cochituate 38
- Cordaville 38
- East Brookfield 38
- Everett 38
- Fiskdale 38
- Framingham 38
- Framingham Center 38
- Hamilton 38
- Leicester 38
- Lynn 38
- Lynnfield 38
- Malden 38
- Marlborough 38
- Middleton 38
- Millbury 38
- Otis 38
- Pittsfield 38
- Reading 38
- Southbridge 38
- Spencer 38
- Stoneham 38
- Sturbridge 38
- Sudbury 38
- Topsfield 38
- Watertown 38
- Wayland 38
- West Boylston 38
- Westborough 38
- Winchester 38
- Amesbury 37
- Ashland 37
- Avon 37
- Beverly 37
- Blackstone 37
- Canton 37
- Danvers 37
- Dedham 37
- Douglas 37
- Dover 37
- Dudley 37
- East Douglas 37
- Fall River 37
- Foxborough 37
- Franklin 37
- Grafton 37
- Holliston 37
- Hopedale 37
- Hopkinton 37
- Hull 37
- Jamaica Plain 37
- Mansfield 37
- Mansfield Center 37
- Medway 37
- Mendon 37
- Millis 37
- Millis-Clicquot 37
- Millville 37
- Nahant 37
- Norfolk 37
- North Attleborough Center 37
- North Reading 37
- Northbridge 37
- Norwood 37
- Plainville 37
- Randolph 37
- Revere 37
- South Boston 37
- South Peabody 37
- Stoughton 37
- Sutton 37
- Upton 37
- Walpole 37
- Webster 37
- Wenham 37
- West Newbury 37
- Whitinsville 37
- Williamstown 37
- Winthrop 37
- Wrentham 37
- Beverly Cove 36
- Easton 36
- Ipswich 36
- North Seekonk 36
- Norton 36
- Norton Center 36
- Salisbury 36
- Abington 35
- Chicopee 35
- Newburyport 35
- Raynham 35
- Rehoboth 35
- Rockland 35
- Roxbury 35
- Seekonk 35
- Whitman 35
- Bridgewater 34
- East Bridgewater 34
- Hingham 34
- Raynham Center 34
- Springfield 34
- Taunton 34
- Berkley 33
- Dighton 33
- Essex 33
- Merrimac 33
- Lancaster 32
- Ocean Grove 32
- Assonet 31
- Easthampton 31
- Halifax 31
- Middleborough Center 31
- North Lakeville 31
- Somerville 31
- Stow 31
- Woburn 31
- Bedford 30
- Billerica 30
- Chelmsford 30
- Cohasset 30
- Manchester-by-the-Sea 30
- North Adams 30
- North Westport 30
- Swampscott 30
- Brookline 29
- Chelsea 29
- Head of Westport 29
- Maynard 29
- Medford 29
- North Pembroke 29
- Northampton 29
- Plympton 29
- Wakefield 29
- Wellesley 29
- Amherst 28
- Arlington 28
- Barre 28
- Boston 28
- Carlisle 28
- Lexington 28
- Medfield 28
- North Scituate 28
- Quincy 28
- Rockport 28
- Shrewsbury 28
- Smith Mills 28
- Weston 28
- Worcester 28
- Gloucester 27
- Holden 27
- Holyoke 27
- Milton 27
- Natick 27
- Sandwich 27
- Saugus 27
- Uxbridge 27
- West Bridgewater 27
- Bliss Corner 26
- Hanson 26
- Marshfield Hills 26
- New Bedford 26
- Rowley 26
- Weymouth 26
- Acushnet Center 25
- Cambridge 25
- Fairhaven 25
- Great Barrington 25
- Greenfield 25
- Melrose 25
- Newton 25
- Norwell 25
- Pepperell 25
- Rochester 25
- Waltham 25
- Bellingham 24
- Carver 24
- Kingston 24
- Marshfield 24
- Mattapoisett 24
- Mattapoisett Center 24
- West Wareham 24
- Duxbury 23
- Green Harbor-Cedar Crest 23
- Marion 23
- Marion Center 23
- Milford 23
- North Plymouth 23
- Ocean Bluff-Brant Rock 23
- Sharon 23
- South Duxbury 23
- Wareham Center 23
- Weweantic 23
- Bourne 22
- Needham 22
- Onset 22
- White Island Shores 22
- Aquinnah 21
- Buzzards Bay 21
- Peabody 21
- Plymouth 21
- Salem 21
- Sherborn 21
- Sunderland 21
- Attleboro 20
- Monument Beach 20
- Pocasset 20
- Templeton 20
- Braintree 19
- North Falmouth 19
- Northborough 19
- Provincetown 19
- Sagamore 19
- Shelburne Falls 19
- Southborough 19
- West Falmouth 19
- West Tisbury 19
- Westfield 19
- Buckland 18
- East Sandwich 18
- Forestdale 18
- Longmeadow 18
- East Falmouth 17
- Falmouth 17
- Hanover 17
- Lawrence 17
- Mashpee 17
- Teaticket 17
- Truro 17
- Vineyard Haven 17
- Acton 16
- Barnstable 16
- Centerville 16
- Cotuit 16
- Gill 16
- Marstons Mills 16
- Osterville 16
- West Barnstable 16
- Hyannis 15
- Scituate 15
- Wellfleet 15
- West Yarmouth 15
- Yarmouth Port 15
- Ayer 14
- Dennis 14
- East Dennis 14
- East Longmeadow 14
- Harvard 14
- Holbrook 14
- Middleborough 14
- Oxford 14
- South Dennis 14
- South Yarmouth 14
- West Dennis 14
- Yarmouth 14
- Brewster 13
- Dennis Port 13
- East Harwich 13
- Eastham 13
- Harwich 13
- Harwich Center 13
- Harwich Port 13
- Marblehead 13
- North Eastham 13
- Northwest Harwich 13
- Orleans 13
- Westwood 13
- Chatham 12
- Nantucket 12
- Oak Bluffs 12
- West Chatham 12
- Edgartown 11
- Freetown 11
- Somerset 10
- Townsend 10
- Acushnet 6
- Swansea 6
AQI US, Metric