Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 10:06, Apr 17
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?
- Waterford60
- Baltic55
- Branford55
- Branford Center55
- Byram55
- Chester Center55
- Colchester55
- Conning Towers-Nautilus Park55
- Cos Cob55
- Coventry Lake55
- Danielson55
- Darien Downtown55
- Durham55
- East Brooklyn55
- East Hampton55
- Essex Village55
- Fenwick55
- Gales Ferry55
- Greens Farms55
- Guilford55
- Guilford Center55
- Hebron55
- Higganum55
- Jewett City55
- Lake Pocotopaug55
- Lisbon55
- Long Hill, Southeastern Connecticut County55
- Lordship55
- Lower Connecticut River Valley55
- Madison Center55
- Manchester55
- Mashantucket55
- Mechanicsville55
- Middletown55
- Milford55
- Moodus55
- Moosup55
- Mystic55
- New London55
- Niantic55
- Noank55
- North Grosvenor Dale55
- North Haven55
- Northford55
- Old Greenwich55
- Old Lyme55
- Old Mystic55
- Old Saybrook Center55
- Orange55
- Oxoboxo River55
- Pawcatuck55
- Pemberwick55
- Plainfield55
- Plainfield Village55
- Pomfret55
- Poquonock Bridge55
- Portland55
- Quasset Lake55
- Quinebaug55
- Riverside55
- Salem55
- Saybrook Manor55
- South Central Connecticut55
- South Coventry55
- South Windham55
- South Woodstock55
- Southeastern Connecticut55
- Southport55
- Storrs55
- Terramuggus55
- Wallingford55
- Wallingford Center55
- Waterford town55
- West Haven55
- Westbrook Center55
- Willimantic55
- Woodmont55
- Ansonia54
- Broad Brook54
- Cannondale54
- Capitol54
- Cheshire Village54
- Cromwell54
- Crystal Lake54
- Derby54
- Ellington54
- Glastonbury Center54
- Glenville54
- Kensington54
- Lyme54
- Meriden54
- Naugatuck54
- New Britain54
- New Canaan54
- Newington54
- Norwalk54
- Plainville54
- Plantsville54
- Prospect54
- Redding Center54
- Rock Ridge54
- Rockville54
- Sandy Hook54
- Saugatuck54
- Seymour54
- Somers54
- South Windsor54
- Stamford54
- Tashua54
- Trumbull Center54
- Wethersfield54
- Wilton Center54
- Woodbridge54
- Bethel53
- Blue Hills53
- Bristol53
- Farmington53
- Groton53
- Hazardville53
- Heritage Village53
- Middlebury53
- Oakville53
- Plymouth53
- Ridgefield53
- Southwood Acres53
- Terryville53
- West Mountain53
- Windsor53
- Windsor Locks53
- Bethlehem Village52
- Bridgeport52
- Canton Valley52
- Collinsville52
- Sherwood Manor52
- Simsbury Center52
- Suffield Depot52
- Tariffville52
- Thomaston52
- Thompsonville52
- Watertown52
- Weatogue52
- Woodbury Center52
- Bigelow Corners51
- Canton51
- Northwest Harwinton51
- West Simsbury51
- Salmon Brook50
- Litchfield49
- New Hartford Center49
- Montville47
- Gaylordsville46
- New Preston46
- North Granby46
- Torrington46
- Torrington town46
- Wauregan46
- Clinton45
- Northwest Hills43
- Winchester43
- Deep River Center41
- Shelton41
- Oronoque40
- Quinnipiac University39
- East Haven38
- Cornwall37
- Canaan36
- New Haven33
- Canterbury29
- Greater Bridgeport29
- Greenwich29
- Northeastern Connecticut29
- Southington29
- Weston28
- East Hartford27
- Waterbury27
- Berlin26
- New Milford26
- Glastonbury25
- Hartford25
- Danbury24
- Western Connecticut23
- Norwich22
- Oxford22
- Washington22
- Cheshire21
- Newtown21
- Mansfield Center20
- Naugatuck Valley19
- Sherman19
- Stafford Springs19
- Winsted18
- West Hartford16
- Mansfield15
- Tolland15
- Woodbury14
- Enfield13
- Riverton3
