Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 23:05, Jun 22
Live most polluted city ranking
Real-time Connecticut most polluted city ranking
Learn more about global air quality
Which is the most polluted city in Connecticut?
- Canaan54
- Plainfield54
- Broad Brook53
- Crystal Lake53
- Ellington53
- Hazardville53
- Mechanicsville53
- North Granby53
- North Grosvenor Dale53
- Quinebaug53
- Riverton53
- Rockville53
- Salmon Brook53
- Sherwood Manor53
- Somers53
- Southwood Acres53
- Stafford53
- Stafford Springs53
- Suffield Depot53
- Tariffville53
- Thompsonville53
- Windsor53
- Winsted53
- Blue Hills52
- Bristol52
- Canton Valley52
- Capitol52
- Collinsville52
- Coventry Lake52
- Danielson52
- East Brooklyn52
- Farmington52
- Gaylordsville52
- Glastonbury Center52
- Hebron52
- Litchfield52
- Manchester52
- Mansfield Center52
- Moosup52
- New Britain52
- New Hartford Center52
- New Preston52
- Newington52
- Northeastern Connecticut52
- Northwest Harwinton52
- Northwest Hills52
- Plainfield Village52
- Plainville52
- Plymouth52
- Pomfret52
- Quasset Lake52
- Simsbury Center52
- South Coventry52
- South Windham52
- South Windsor52
- South Woodstock52
- Storrs52
- Terryville52
- Thomaston52
- Torrington52
- Torrington town52
- Washington52
- Wauregan52
- Weatogue52
- West Simsbury52
- Wethersfield52
- Willimantic52
- Baltic51
- Bethlehem Village51
- Colchester51
- Cromwell51
- East Hampton51
- Greenwich51
- Jewett City51
- Kensington51
- Lake Pocotopaug51
- Lisbon51
- Oakville51
- Plantsville51
- Portland51
- Southington51
- Stratford51
- Terramuggus51
- Watertown51
- Bigelow Corners50
- Woodbury Center50
- Bethel49
- Byram49
- Cannondale49
- Cheshire Village49
- Cos Cob49
- Darien Downtown49
- Durham49
- Glenville49
- Greens Farms49
- Greenwich town49
- Heritage Village49
- Higganum49
- Madison49
- Meriden49
- Middlebury49
- Middletown49
- Moodus49
- Naugatuck49
- Naugatuck Valley49
- Norwalk49
- Old Greenwich49
- Pemberwick49
- Prospect49
- Redding49
- Redding Center49
- Ridgefield49
- Riverside49
- Rock Ridge49
- Sandy Hook49
- Saugatuck49
- Southport49
- Stamford49
- Tashua49
- Wallingford49
- Wallingford Center49
- West Mountain49
- Western Connecticut49
- Weston49
- Wilton Center49
- Ansonia48
- Branford Center48
- Chester Center48
- Deep River Center48
- Derby48
- Greater Bridgeport48
- Guilford Center48
- Lordship48
- Lower Connecticut River Valley48
- Milford48
- North Haven48
- Northford48
- Orange48
- Oronoque48
- Quinnipiac University48
- Salem48
- Seymour48
- South Central Connecticut48
- Southeastern Connecticut48
- Trumbull Center48
- West Haven48
- Woodbridge48
- Woodmont48
- Clinton47
- Essex Village47
- Madison Center47
- New Haven47
- Oxoboxo River47
- Fenwick46
- Gales Ferry46
- Groton46
- Mashantucket46
- New Canaan46
- Old Lyme46
- Old Saybrook Center46
- Saybrook Manor46
- Westbrook Center46
- Conning Towers-Nautilus Park45
- Hartford44
- Long Hill, Southeastern Connecticut County44
- Mystic44
- New London44
- Niantic44
- Noank44
- Old Mystic44
- Pawcatuck44
- Poquonock Bridge44
- Waterford44
- Lyme43
- Cornwall42
- West Hartford42
- Hamden39
- Coventry38
- Trumbull37
- East Hartford36
- Windsor Locks35
- Glastonbury34
- Danbury33
- Fairfield33
- Montville32
- Mansfield30
- Berlin29
- Bridgeport29
- Oxford29
- Waterbury29
- Killingworth28
- Ashford26
- Newtown26
- Tolland26
- Winchester26
- Deep River25
- Canterbury23
- New Milford23
- Branford22
- East Haven22
- Enfield22
- Lebanon22
- Shelton22
- Westport18
- Norwich17
- Waterford town16
- Cheshire15
- Canton14
- Milford town14
- Guilford13
- Sherman13
- Woodbury12
- Colebrook5
