Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 07:33, Oct 31
Live most polluted city ranking
Real-time Connecticut most polluted city ranking
Wildfires in Connecticut
Real-time information
Active fires
--
Learn more about global air quality
Which is the most polluted city in Connecticut?
- Plainfield62
- Winchester62
- Danbury21
- Killingly21
- Old Saybrook21
- Byram19
- Cornwall19
- Glenville19
- Greenwich town19
- Pemberwick19
- Pomfret19
- Rock Ridge19
- Waterbury19
- Cos Cob18
- Deep River18
- Old Greenwich18
- Riverside18
- Simsbury18
- Stamford18
- Waterford18
- Bethel17
- Bigelow Corners17
- Cannondale17
- Darien Downtown17
- East Hartford17
- Fairfield17
- Gaylordsville17
- Greater Bridgeport17
- Greens Farms17
- Heritage Village17
- Lordship17
- Middlebury17
- Milford17
- Montville17
- Naugatuck17
- Naugatuck Valley17
- New Milford17
- Norwalk17
- Orange17
- Oronoque17
- Redding17
- Redding Center17
- Ridgefield17
- Sandy Hook17
- Saugatuck17
- Seymour17
- Southport17
- Stratford17
- Tashua17
- Trumbull Center17
- Western Connecticut17
- Weston17
- Westport17
- Wilton Center17
- Woodbury Center17
- Bethlehem Village16
- Branford Center16
- Bristol16
- Cheshire16
- Cheshire Village16
- Durham16
- Farmington16
- Guilford Center16
- Kensington16
- Litchfield16
- Meriden16
- New Britain16
- New Preston16
- Newington16
- North Haven16
- Northford16
- Northwest Harwinton16
- Northwest Hills16
- Oakville16
- Plainville16
- Plantsville16
- Plymouth16
- Prospect16
- Quinnipiac University16
- Shelton16
- South Central Connecticut16
- Terryville16
- Thomaston16
- Torrington16
- Torrington town16
- Wallingford16
- Wallingford Center16
- Watertown16
- West Haven16
- Woodbridge16
- Woodmont16
- Blue Hills15
- Broad Brook15
- Canaan15
- Canton15
- Canton Valley15
- Capitol15
- Chester Center15
- Clinton15
- Colchester15
- Collinsville15
- Coventry Lake15
- Cromwell15
- Crystal Lake15
- Deep River Center15
- East Hampton15
- Ellington15
- Essex Village15
- Glastonbury Center15
- Hazardville15
- Higganum15
- Lake Pocotopaug15
- Lower Connecticut River Valley15
- Madison15
- Madison Center15
- Manchester15
- Moodus15
- New Hartford Center15
- New Haven15
- North Granby15
- Portland15
- Riverton15
- Rockville15
- Salmon Brook15
- Sherwood Manor15
- Simsbury Center15
- Somers15
- South Coventry15
- South Windsor15
- Southwood Acres15
- Stafford15
- Stafford Springs15
- Storrs15
- Suffield Depot15
- Tariffville15
- Terramuggus15
- Thompsonville15
- Weatogue15
- West Simsbury15
- Wethersfield15
- Windsor Locks15
- Winsted15
- Ashford14
- Fenwick14
- Mansfield Center14
- Old Lyme14
- Old Saybrook Center14
- Salem14
- Saybrook Manor14
- South Windham14
- Westbrook Center14
- Willimantic14
- Baltic13
- Conning Towers-Nautilus Park13
- Gales Ferry13
- Guilford13
- Lisbon13
- New London13
- Niantic13
- Norwich13
- Oxoboxo River13
- Southeastern Connecticut13
- Southington13
- Waterford town13
- Danielson12
- Derby12
- East Brooklyn12
- Hartford12
- Jewett City12
- Long Hill, Southeastern Connecticut County12
- Mashantucket12
- Mechanicsville12
- Moosup12
- Mystic12
- Noank12
- North Grosvenor Dale12
- Northeastern Connecticut12
- Old Mystic12
- Pawcatuck12
- Plainfield Village12
- Poquonock Bridge12
- Quasset Lake12
- Quinebaug12
- South Woodstock12
- Wauregan12
- Mansfield11
- Berlin10
- Greenwich10
- Sherman10
- Hamden9
- Trumbull9
- Ansonia8
- Bolton8
- Branford8
- Enfield8
- Glastonbury8
- Oxford8
- West Hartford8
- Bridgeport7
- Canterbury7
- East Haven7
- Groton7
- Hebron7
- Tolland7
- Middletown6
- Lebanon5
- Coventry4
- Milford town4
- Windsor4
- Colebrook3
- Killingworth3
- New Canaan3
- Woodbury3
- Washington2
- Lyme1
- Newtown1
- West Mountain0
