Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 18:02, Jul 24
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?
- Greenwich town91
- Stratford81
- Broad Brook59
- Canaan59
- Canton Valley59
- Collinsville59
- Hazardville59
- Litchfield59
- New Hartford Center59
- North Granby59
- Northwest Harwinton59
- Northwest Hills59
- Riverton59
- Salmon Brook59
- Sherwood Manor59
- Simsbury Center59
- Somers59
- Southwood Acres59
- Suffield Depot59
- Tariffville59
- Thompsonville59
- Torrington59
- Torrington town59
- Weatogue59
- West Simsbury59
- Windsor59
- Winsted59
- Bethlehem Village58
- Blue Hills58
- Bristol58
- Capitol58
- Crystal Lake58
- Ellington58
- Farmington58
- Gaylordsville58
- Glastonbury Center58
- Kensington58
- Manchester58
- New Britain58
- New Milford58
- New Preston58
- Newington58
- Oakville58
- Plainville58
- Plymouth58
- Rockville58
- South Windsor58
- Southington58
- Stafford58
- Stafford Springs58
- Terryville58
- Thomaston58
- Washington58
- Watertown58
- Wethersfield58
- Coventry Lake57
- Cromwell57
- Heritage Village57
- Middlebury57
- Plantsville57
- Quinebaug57
- South Coventry57
- Storrs57
- Woodbury Center57
- Bigelow Corners56
- Cheshire Village56
- Danielson56
- East Brooklyn56
- Lake Pocotopaug56
- Mansfield Center56
- Mechanicsville56
- Meriden56
- Middletown56
- Naugatuck Valley56
- North Grosvenor Dale56
- Northeastern Connecticut56
- Pomfret56
- Portland56
- Prospect56
- Quasset Lake56
- South Woodstock56
- Terramuggus56
- Willimantic56
- Bethel55
- Colchester55
- East Hampton55
- Moosup55
- Naugatuck55
- Plainfield Village55
- Sandy Hook55
- South Windham55
- Wauregan55
- Baltic54
- Durham54
- Higganum54
- Jewett City54
- Lisbon54
- Moodus54
- Quinnipiac University54
- Redding Center54
- Ridgefield54
- Seymour54
- Wallingford54
- Wallingford Center54
- Western Connecticut54
- Ansonia53
- Byram53
- Cannondale53
- Cos Cob53
- Darien Downtown53
- Derby53
- Glenville53
- North Haven53
- Northford53
- Norwalk53
- Old Greenwich53
- Pemberwick53
- Riverside53
- Rock Ridge53
- Salem53
- Saugatuck53
- Stamford53
- Tashua53
- Trumbull Center53
- Waterbury53
- Weston53
- Wilton Center53
- Woodbridge53
- Branford Center52
- Chester Center52
- Greater Bridgeport52
- Greens Farms52
- Lordship52
- Lower Connecticut River Valley52
- Madison52
- Milford52
- Orange52
- Oronoque52
- Oxoboxo River52
- South Central Connecticut52
- Southeastern Connecticut52
- Southport52
- West Haven52
- Woodmont52
- Deep River Center51
- Gales Ferry51
- Guilford Center51
- Mashantucket51
- Essex Village49
- Madison Center49
- Clinton48
- Conning Towers-Nautilus Park48
- Pawcatuck48
- Long Hill, Southeastern Connecticut County47
- Mystic47
- New London47
- Niantic47
- Old Lyme47
- Old Mystic47
- Poquonock Bridge47
- Saybrook Manor47
- Westbrook Center47
- Fenwick46
- Noank46
- Old Saybrook Center46
- New Haven45
- Plainfield45
- Cornwall44
- Coventry42
- East Hartford42
- Groton40
- Fairfield39
- Montville38
- Glastonbury36
- Canterbury35
- Lebanon35
- Mansfield35
- Windsor Locks35
- Berlin34
- Hartford33
- Bridgeport32
- Oxford32
- Shelton32
- East Haven31
- Killingworth31
- Waterford31
- West Hartford31
- Tolland30
- Deep River29
- Enfield29
- Lyme29
- Ashford28
- Hamden28
- Killingly28
- New Canaan28
- Sherman28
- Westport28
- Newtown27
- Winchester27
- Branford26
- Danbury25
- Colebrook22
- Greenwich22
- Simsbury22
- Trumbull21
- Milford town20
- Waterford town20
- Guilford18
- Woodbury16
- Norwich12
- Redding5
- Hebron4
- West Mountain2
- Canton1
- Cheshire1
