Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 15:27, Jun 18
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?
- Hamden62
- Cornwall60
- New Canaan59
- Fairfield58
- Hartford58
- Trumbull58
- Bridgeport57
- Groton57
- Waterbury57
- Canaan56
- Gaylordsville56
- Greenwich56
- Lyme56
- New Preston56
- Northwest Hills56
- Oxford56
- Shelton56
- Sherman56
- Bethel55
- Bethlehem Village55
- Bigelow Corners55
- Bristol55
- Byram55
- Cannondale55
- Canton Valley55
- Colebrook55
- Collinsville55
- Cos Cob55
- Coventry55
- Darien Downtown55
- East Haven55
- Glenville55
- Greens Farms55
- Greenwich town55
- Heritage Village55
- Litchfield55
- Middlebury55
- Milford town55
- New Hartford Center55
- New Milford55
- North Granby55
- Northwest Harwinton55
- Norwalk55
- Oakville55
- Old Greenwich55
- Pemberwick55
- Plymouth55
- Redding55
- Redding Center55
- Ridgefield55
- Riverside55
- Riverton55
- Rock Ridge55
- Salmon Brook55
- Sandy Hook55
- Saugatuck55
- Simsbury Center55
- Stamford55
- Suffield Depot55
- Tariffville55
- Tashua55
- Terryville55
- Thomaston55
- Thompsonville55
- Torrington55
- Torrington town55
- Washington55
- Watertown55
- Weatogue55
- West Mountain55
- West Simsbury55
- Western Connecticut55
- Weston55
- Wilton Center55
- Winchester55
- Windsor Locks55
- Winsted55
- Woodbury55
- Woodbury Center55
- Berlin54
- Blue Hills54
- Branford54
- Broad Brook54
- Canterbury54
- Enfield54
- Farmington54
- Greater Bridgeport54
- Hazardville54
- Killingworth54
- Mansfield54
- Naugatuck54
- Naugatuck Valley54
- New Haven54
- Newtown54
- Plainville54
- Seymour54
- Sherwood Manor54
- Somers54
- Southport54
- Southwood Acres54
- Trumbull Center54
- Waterford town54
- West Hartford54
- Windsor54
- Ansonia53
- Branford Center53
- Capitol53
- Cheshire Village53
- Cromwell53
- Crystal Lake53
- Deep River53
- Derby53
- East Hartford53
- Ellington53
- Glastonbury53
- Glastonbury Center53
- Kensington53
- Lordship53
- Manchester53
- Meriden53
- Milford53
- Montville53
- New Britain53
- Newington53
- North Haven53
- Northford53
- Orange53
- Oronoque53
- Plantsville53
- Prospect53
- Quinnipiac University53
- Rockville53
- South Central Connecticut53
- South Windsor53
- Southington53
- Stafford53
- Stafford Springs53
- Stratford53
- Wallingford53
- Wallingford Center53
- West Haven53
- Wethersfield53
- Woodbridge53
- Woodmont53
- Chester Center52
- Clinton52
- Colchester52
- Coventry Lake52
- Deep River Center52
- Durham52
- East Hampton52
- Essex Village52
- Fenwick52
- Guilford52
- Guilford Center52
- Hebron52
- Higganum52
- Lake Pocotopaug52
- Lower Connecticut River Valley52
- Madison52
- Madison Center52
- Mansfield Center52
- Middletown52
- Moodus52
- Norwich52
- Old Lyme52
- Old Saybrook Center52
- Portland52
- Quasset Lake52
- Quinebaug52
- Salem52
- Saybrook Manor52
- South Coventry52
- South Windham52
- Storrs52
- Terramuggus52
- Tolland52
- Westbrook Center52
- Westport52
- Willimantic52
- Ashford51
- Baltic51
- East Brooklyn51
- Lisbon51
- Mechanicsville51
- Niantic51
- North Grosvenor Dale51
- Northeastern Connecticut51
- Oxoboxo River51
- Pomfret51
- South Woodstock51
- Southeastern Connecticut51
- Danbury50
- Danielson50
- Jewett City50
- Wauregan50
- Conning Towers-Nautilus Park49
- Gales Ferry49
- Long Hill, Southeastern Connecticut County49
- Moosup49
- New London49
- Plainfield Village49
- Waterford49
- Lebanon48
- Mashantucket48
- Mystic48
- Noank48
- Old Mystic48
- Poquonock Bridge48
- Pawcatuck47
- Canton43
- Plainfield42
- Cheshire34
