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Air quality in Connecticut
Air quality index (AQI) and PM2.5 air pollution in Connecticut
LIVE AQI CITY RANKING
Real-time Connecticut
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Pomfret Center | 30 |
| 2 | East Haven | 16 |
| 3 | Mansfield City | 16 |
| 4 | Stafford | 16 |
| 5 | Newtown | 15 |
| 6 | Glastonbury | 14 |
| 7 | Montville Center | 14 |
| 8 | Windham | 14 |
| 9 | Hamden | 13 |
| 10 | Ledyard | 13 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
72 Contributors
See all
LIVE AQI CITY RANKING
Real-time Connecticut
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Wauregan | 2 |
| 2 | North Stamford | 4 |
| 3 | Ridgefield | 4 |
| 4 | Waterford | 4 |
| 5 | Bridgeport | 7 |
| 6 | Hebron | 7 |
| 7 | New London | 7 |
| 8 | Old Greenwich | 7 |
| 9 | Middletown | 8 |
| 10 | Westport | 8 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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News
The latest air quality news and resources.
Connecticut air quality data attribution
72Contributors
Government Contributor
- Clancy Nolan
1 station
- Peter
1 station
- Nibbles
1 station
- The Zs
1 station
- D&S
1 station
5 Individual Contributors
66 Anonymous contributors66 stations
66 Anonymous Contributors
Which is the most polluted city in Connecticut?
- Stratford 32
- Pomfret Center 30
- East Haven 16
- Mansfield City 16
- Stafford 16
- Newtown 15
- Glastonbury 14
- Montville Center 14
- Windham 14
- Hamden 13
- Ledyard 13
- Pawcatuck 13
- Stamford 13
- Tolland 13
- Woodbury 13
- Groton 12
- Middlebury 12
- Mystic 12
- Noank 12
- Norwich 12
- Old Lyme 12
- Old Mystic 12
- Shelton 12
- Somers 12
- Southington 12
- Fairfield 11
- Poquonock Bridge 11
- Sherman 11
- Storrs 11
- Waterbury 11
- Winsted 11
- Central Waterford 10
- Conning Towers-Nautilus Park 10
- East Hartford 10
- Enfield 10
- Gales Ferry 10
- Greenwich 10
- Hartford 10
- Long Hill 10
- New Haven 10
- Niantic 10
- Old Saybrook 10
- Old Saybrook Center 10
- Oxford 10
- Saybrook Manor 10
- West Cornwall 10
- West Hartford 10
- West Torrington 10
- Westbrook Center 10
- Branford 9
- Byram 9
- Clinton 9
- Cos Cob 9
- Danbury 9
- Essex Village 9
- Glenville 9
- Guilford 9
- Madison 9
- Milford 9
- Oxoboxo River 9
- Pemberwick 9
- Preston City 9
- Redding 9
- Riverside 9
- Trumbull 9
- Uncasville 9
- Bethel 8
- Chester Center 8
- City of Milford (balance) 8
- Darien 8
- Deep River Center 8
- East Norwalk 8
- Easton 8
- Georgetown 8
- Madison Center 8
- Middletown 8
- New Canaan 8
- Norwalk 8
- Southport 8
- Westport 8
- Wilton 8
- Woodbridge 8
- Woodmont 8
- Ansonia 7
- Baltic 7
- Branford Center 7
- Bridgeport 7
- Bristol 7
- Cheshire 7
- Cheshire Village 7
- Colchester 7
- Cromwell 7
- Derby 7
- Durham 7
- East Haddam 7
- East Hampton 7
- Farmington 7
- Guilford Center 7
- Hebron 7
- Heritage Village 7
- Higganum 7
- Jewett City 7
- Kensington 7
- Lake Pocotopaug 7
- Lisbon 7
- Meriden 7
- Moodus 7
- Moosup 7
- Naugatuck 7
- New Britain 7
- New Fairfield 7
- New London 7
- New Milford 7
- Newington 7
- North Branford 7
- North Haven 7
- Oakville 7
- Old Greenwich 7
- Orange 7
- Plainfield 7
- Plainfield Village 7
- Plainville 7
- Portland 7
- Prospect 7
- Salem 7
- Seymour 7
- Southbury 7
- Terramuggus 7
- Wallingford 7
- Wallingford Center 7
- Watertown 7
- West Haven 7
- Wolcott 7
- Woodbury Center 7
- Bethlehem Village 6
- Blue Hills 6
- Canaan 6
- Canton Valley 6
- Collinsville 6
- Coventry Lake 6
- Crystal Lake 6
- Danielson 6
- East Brooklyn 6
- East Windsor 6
- Ellington 6
- Glastonbury Center 6
- Hazardville 6
- Kent 6
- Killingly Center 6
- Litchfield 6
- Manchester 6
- New Hartford Center 6
- New Preston 6
- North Granby 6
- North Grosvenor Dale 6
- Northwest Harwinton 6
- Plymouth 6
- Putnam 6
- Quinebaug 6
- Rockville 6
- Salmon Brook 6
- Sherwood Manor 6
- Simsbury Center 6
- South Coventry 6
- South Windham 6
- South Windsor 6
- South Woodstock 6
- Southwood Acres 6
- Stafford Springs 6
- Suffield Depot 6
- Tariffville 6
- Terryville 6
- Thomaston 6
- Thompson 6
- Thompsonville 6
- Torrington 6
- Washington 6
- Weatogue 6
- West Simsbury 6
- Wethersfield 6
- Willimantic 6
- Winchester Center 6
- Windsor 6
- Windsor Locks 6
- North Stamford 4
- Ridgefield 4
- Waterford 4
- Wauregan 2
AQI US, Metric