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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 | 29 |
| 2 | Waterford | 23 |
| 3 | Wauregan | 21 |
| 4 | Glastonbury | 17 |
| 5 | Mansfield City | 17 |
| 6 | Montville Center | 17 |
| 7 | Old Lyme | 17 |
| 8 | Southington | 17 |
| 9 | Stafford | 17 |
| 10 | Norwich | 16 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
71 Contributors
See all
LIVE AQI CITY RANKING
Real-time Connecticut
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | North Stamford | 4 |
| 2 | Ridgefield | 4 |
| 3 | West Hartford | 8 |
| 4 | Guilford | 9 |
| 5 | Milford | 9 |
| 6 | Westport | 9 |
| 7 | Woodbridge | 9 |
| 8 | Old Greenwich | 10 |
| 9 | West Cornwall | 10 |
| 10 | West Torrington | 10 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
Connecticut air quality data attribution
71Contributors
Government Contributor
- Clancy Nolan
1 station
- Peter
1 station
- Nibbles
1 station
- The Zs
1 station
- D&S
1 station
5 Individual Contributors
65 Anonymous contributors65 stations
65 Anonymous Contributors
Which is the most polluted city in Connecticut?
- Stratford 31
- Pomfret Center 29
- Waterford 23
- Wauregan 21
- Glastonbury 17
- Mansfield City 17
- Montville Center 17
- North Granby 17
- Old Lyme 17
- Salmon Brook 17
- Southington 17
- Stafford 17
- Bethlehem Village 16
- Blue Hills 16
- Bristol 16
- Canaan 16
- Canton Valley 16
- Collinsville 16
- Crystal Lake 16
- East Windsor 16
- Ellington 16
- Farmington 16
- Hazardville 16
- Kent 16
- Litchfield 16
- Manchester 16
- New Britain 16
- New Hartford Center 16
- New Preston 16
- Newington 16
- Northwest Harwinton 16
- Norwich 16
- Plainville 16
- Plymouth 16
- Rockville 16
- Sherwood Manor 16
- Simsbury Center 16
- South Windsor 16
- Southwood Acres 16
- Stafford Springs 16
- Suffield Depot 16
- Tariffville 16
- Terryville 16
- Thomaston 16
- Thompsonville 16
- Tolland 16
- Torrington 16
- Washington 16
- Weatogue 16
- West Simsbury 16
- Wethersfield 16
- Winchester Center 16
- Windsor 16
- Windsor Locks 16
- Woodbury 16
- Bethel 15
- Byram 15
- Cheshire 15
- Cheshire Village 15
- Cos Cob 15
- Coventry Lake 15
- Cromwell 15
- East Hampton 15
- East Haven 15
- Georgetown 15
- Glastonbury Center 15
- Glenville 15
- Groton 15
- Heritage Village 15
- Kensington 15
- Lake Pocotopaug 15
- Ledyard 15
- Madison 15
- Meriden 15
- Naugatuck 15
- New Canaan 15
- New Fairfield 15
- New London 15
- New Milford 15
- Newtown 15
- Oakville 15
- Pemberwick 15
- Portland 15
- Prospect 15
- Riverside 15
- South Coventry 15
- Southbury 15
- Storrs 15
- Terramuggus 15
- Wallingford 15
- Watertown 15
- Wilton 15
- Wolcott 15
- Woodbury Center 15
- Ansonia 14
- Branford Center 14
- City of Milford (balance) 14
- Darien 14
- Derby 14
- Durham 14
- East Hartford 14
- East Norwalk 14
- Easton 14
- Enfield 14
- Hartford 14
- Higganum 14
- North Branford 14
- North Haven 14
- Norwalk 14
- Orange 14
- Quinebaug 14
- Redding 14
- Seymour 14
- Sherman 14
- Somers 14
- South Woodstock 14
- Southport 14
- Wallingford Center 14
- West Haven 14
- Willimantic 14
- Winsted 14
- Woodmont 14
- Chester Center 13
- Colchester 13
- Deep River Center 13
- East Haddam 13
- Essex Village 13
- Guilford Center 13
- Madison Center 13
- Moodus 13
- North Grosvenor Dale 13
- Old Saybrook 13
- Old Saybrook Center 13
- Putnam 13
- Salem 13
- Saybrook Manor 13
- Shelton 13
- South Windham 13
- Stamford 13
- Thompson 13
- Waterbury 13
- Westbrook Center 13
- Windham 13
- Baltic 12
- Bridgeport 12
- Central Waterford 12
- Clinton 12
- Danielson 12
- East Brooklyn 12
- Fairfield 12
- Gales Ferry 12
- Greenwich 12
- Hamden 12
- Hebron 12
- Jewett City 12
- Killingly Center 12
- Lisbon 12
- Middlebury 12
- New Haven 12
- Niantic 12
- Oxford 12
- Oxoboxo River 12
- Plainfield 12
- Plainfield Village 12
- Trumbull 12
- Uncasville 12
- Branford 11
- Conning Towers-Nautilus Park 11
- Danbury 11
- Long Hill 11
- Middletown 11
- Moosup 11
- Mystic 11
- Noank 11
- Old Mystic 11
- Poquonock Bridge 11
- Preston City 11
- Old Greenwich 10
- Pawcatuck 10
- West Cornwall 10
- West Torrington 10
- Guilford 9
- Milford 9
- Westport 9
- Woodbridge 9
- West Hartford 8
- North Stamford 4
- Ridgefield 4
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AQI US, Metric