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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 | Otis | 48 |
| 2 | Woburn | 46 |
| 3 | Andover | 45 |
| 4 | Quincy | 44 |
| 5 | Weymouth | 42 |
| 6 | Ware | 40 |
| 7 | Wellesley | 40 |
| 8 | Chelmsford | 39 |
| 9 | Fall River | 38 |
| 10 | North Adams | 38 |
(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 | Swansea | 5 |
| 2 | Acushnet | 6 |
| 3 | Middleborough | 8 |
| 4 | Holbrook | 9 |
| 5 | Edgartown | 11 |
| 6 | Freetown | 11 |
| 7 | Scituate | 11 |
| 8 | Somerset | 11 |
| 9 | East Longmeadow | 12 |
| 10 | Gill | 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
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?
- Otis 48
- Woburn 46
- Adams 45
- Andover 45
- Bernardston 45
- Charlemont 45
- Colrain 45
- Lanesborough 45
- Northfield 45
- Shelburne 45
- Ashfield 44
- Dalton 44
- Quincy 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
- Weymouth 42
- Winchendon 42
- Ashburnham 41
- Ashby 41
- Baldwinville 41
- Becket 41
- Chesterfield 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
- 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
- Ware 40
- Wellesley 40
- West Concord 40
- West Springfield 40
- Westhampton 40
- Westminster 40
- Wilbraham 40
- Wilmington 40
- Bolton 39
- Brimfield 39
- Burlington 39
- Chelmsford 39
- Clinton 39
- Granville 39
- Groveland 39
- Holland 39
- Hudson 39
- Lincoln 39
- Monson 39
- Monson Center 39
- North Brookfield 39
- Oakham 39
- Paxton 39
- Rutland 39
- Sheffield 39
- South Lancaster 39
- Southwick 39
- Sterling 39
- Wales 39
- Warren 39
- West Brookfield 39
- Auburn 38
- Belmont 38
- Berlin 38
- Boxford 38
- Boylston 38
- Charlton 38
- Cochituate 38
- Cordaville 38
- East Brookfield 38
- Everett 38
- Fall River 38
- Fiskdale 38
- Framingham 38
- Framingham Center 38
- Hamilton 38
- Leicester 38
- Lynnfield 38
- Malden 38
- Marlborough 38
- Middleton 38
- Millbury 38
- North Adams 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
- Aquinnah 37
- Ashland 37
- Avon 37
- Beverly 37
- Blackstone 37
- Canton 37
- Danvers 37
- Dedham 37
- Douglas 37
- Dover 37
- Dudley 37
- East Douglas 37
- Foxborough 37
- Franklin 37
- Grafton 37
- Greenfield 37
- Holliston 37
- Hopedale 37
- Hopkinton 37
- Hull 37
- Jamaica Plain 37
- Lynn 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 Chelmsford 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
- Winthrop 37
- Wrentham 37
- Beverly Cove 36
- Brockton 36
- Easton 36
- Ipswich 36
- North Seekonk 36
- Norton 36
- Norton Center 36
- Salisbury 36
- Abington 35
- Barnstable 35
- Newburyport 35
- Raynham 35
- Rehoboth 35
- Rockland 35
- Roxbury 35
- Seekonk 35
- Whitman 35
- Bridgewater 34
- East Bridgewater 34
- Fairhaven 34
- Raynham Center 34
- Somerville 34
- Taunton 34
- Berkley 33
- Chelsea 33
- Dighton 33
- Easthampton 33
- Essex 33
- Hingham 33
- North Reading 33
- Springfield 33
- Great Barrington 32
- Medford 32
- Ocean Grove 32
- Pittsfield 32
- Stow 32
- Arlington 31
- Assonet 31
- Bedford 31
- Chicopee 31
- Halifax 31
- Merrimac 31
- Middleborough Center 31
- North Lakeville 31
- Wakefield 31
- West Bridgewater 31
- Amesbury 30
- Ayer 30
- Cambridge 30
- Cohasset 30
- Manchester-by-the-Sea 30
- North Westport 30
- Swampscott 30
- Worcester 30
- Amherst 29
- Boston 29
- Brookline 29
- Head of Westport 29
- Maynard 29
- Melrose 29
- Newton 29
- North Pembroke 29
- Plympton 29
- Billerica 28
- Holyoke 28
- Lexington 28
- North Scituate 28
- Northampton 28
- Rockport 28
- Smith Mills 28
- Weston 28
- Carlisle 27
- Gloucester 27
- Holden 27
- Williamstown 27
- Barre 26
- Bliss Corner 26
- Lancaster 26
- Marshfield Hills 26
- Medfield 26
- New Bedford 26
- Norwell 26
- Pepperell 26
- Shrewsbury 26
- Waltham 26
- Acushnet Center 25
- Lawrence 25
- Rochester 25
- Rowley 25
- Saugus 25
- Braintree 24
- Carver 24
- Kingston 24
- Marshfield 24
- Mattapoisett 24
- Mattapoisett Center 24
- Natick 24
- Uxbridge 24
- West Wareham 24
- Bellingham 23
- Duxbury 23
- Green Harbor-Cedar Crest 23
- Marion 23
- Marion Center 23
- Milton 23
- North Plymouth 23
- Ocean Bluff-Brant Rock 23
- Peabody 23
- South Duxbury 23
- Wareham Center 23
- Weweantic 23
- Milford 22
- Needham 22
- Onset 22
- Sharon 22
- White Island Shores 22
- Buzzards Bay 21
- Hanson 21
- Sherborn 21
- Sunderland 21
- Westfield 21
- Monument Beach 20
- Plymouth 20
- Pocasset 20
- Marblehead 19
- North Falmouth 19
- Provincetown 19
- Sagamore 19
- Salem 19
- Sandwich 19
- West Falmouth 19
- West Tisbury 19
- Attleboro 18
- Concord 18
- East Sandwich 18
- Forestdale 18
- Southborough 18
- Bourne 17
- East Falmouth 17
- Mashpee 17
- Shelburne Falls 17
- Teaticket 17
- Truro 17
- Vineyard Haven 17
- Acton 16
- Buckland 16
- Centerville 16
- Cotuit 16
- Falmouth 16
- Longmeadow 16
- Marstons Mills 16
- Northborough 16
- Osterville 16
- Templeton 16
- West Barnstable 16
- Hyannis 15
- New Marlborough 15
- Wellfleet 15
- West Yarmouth 15
- Yarmouth Port 15
- Dennis 14
- East Dennis 14
- Harvard 14
- Oxford 14
- South Dennis 14
- South Yarmouth 14
- West Dennis 14
- Yarmouth 14
- Brewster 13
- Dennis Port 13
- East Harwich 13
- Eastham 13
- Gill 13
- Hanover 13
- Harwich 13
- Harwich Center 13
- Harwich Port 13
- Nantucket 13
- North Eastham 13
- Northwest Harwich 13
- Oak Bluffs 13
- Orleans 13
- Westwood 13
- East Longmeadow 12
- West Chatham 12
- Dracut 11
- Edgartown 11
- Freetown 11
- Scituate 11
- Somerset 11
- Townsend 10
- Holbrook 9
- Middleborough 8
- Acushnet 6
- Swansea 5
- Chatham 0
AQI US, Metric