Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 04:31, May 20
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?
- Quinnipiac University69
- Waterford66
- Lyme64
- Hartford63
- Canterbury62
- Norwich62
- Waterbury62
- Clinton61
- Groton61
- Deep River Center60
- New London60
- Windsor Locks60
- Branford59
- East Haven59
- Mansfield59
- Montville59
- Enfield58
- Mansfield Center58
- New Haven58
- West Hartford58
- Guilford57
- Oronoque57
- Baltic56
- Blue Hills56
- Bristol56
- Broad Brook56
- Canton Valley56
- Capitol56
- Cheshire Village56
- Chester Center56
- Colchester56
- Collinsville56
- Coventry Lake56
- Cromwell56
- Crystal Lake56
- Danielson56
- Durham56
- East Brooklyn56
- East Hampton56
- Ellington56
- Essex Village56
- Farmington56
- Glastonbury Center56
- Guilford Center56
- Hazardville56
- Hebron56
- Higganum56
- Kensington56
- Lake Pocotopaug56
- Lower Connecticut River Valley56
- Madison Center56
- Manchester56
- Mechanicsville56
- Meriden56
- Middletown56
- Moodus56
- Moosup56
- New Britain56
- Newington56
- North Granby56
- North Grosvenor Dale56
- Northeastern Connecticut56
- Northford56
- Plainfield56
- Plainfield Village56
- Plainville56
- Plantsville56
- Pomfret56
- Portland56
- Quasset Lake56
- Quinebaug56
- Rockville56
- Salem56
- Salmon Brook56
- Shelton56
- Sherwood Manor56
- Simsbury Center56
- Somers56
- South Coventry56
- South Windham56
- South Windsor56
- South Woodstock56
- Southington56
- Southwood Acres56
- Stafford Springs56
- Storrs56
- Suffield Depot56
- Tariffville56
- Terramuggus56
- Thompsonville56
- Wallingford56
- Wallingford Center56
- Weatogue56
- West Simsbury56
- Wethersfield56
- Willimantic56
- Windsor56
- Ansonia55
- Bethel55
- Bethlehem Village55
- Bigelow Corners55
- Branford Center55
- Bridgeport55
- Cannondale55
- Derby55
- East Hartford55
- Fenwick55
- Gales Ferry55
- Heritage Village55
- Jewett City55
- Lisbon55
- Litchfield55
- Mashantucket55
- Middlebury55
- Milford55
- Naugatuck55
- New Hartford Center55
- New Preston55
- Niantic55
- North Haven55
- Northwest Harwinton55
- Northwest Hills55
- Oakville55
- Old Lyme55
- Old Saybrook Center55
- Orange55
- Oxoboxo River55
- Plymouth55
- Prospect55
- Redding Center55
- Sandy Hook55
- Saybrook Manor55
- Seymour55
- South Central Connecticut55
- Southeastern Connecticut55
- Tashua55
- Terryville55
- Thomaston55
- Torrington55
- Torrington town55
- Trumbull Center55
- Washington55
- Watertown55
- West Haven55
- Westbrook Center55
- Weston55
- Winchester55
- Woodbridge55
- Woodbury Center55
- Woodmont55
- Byram54
- Canaan54
- Conning Towers-Nautilus Park54
- Cos Cob54
- Darien Downtown54
- Gaylordsville54
- Glenville54
- Greens Farms54
- Long Hill, Southeastern Connecticut County54
- Lordship54
- Mystic54
- Naugatuck Valley54
- New Canaan54
- Noank54
- Norwalk54
- Old Greenwich54
- Old Mystic54
- Pawcatuck54
- Pemberwick54
- Poquonock Bridge54
- Ridgefield54
- Riverside54
- Rock Ridge54
- Saugatuck54
- Southport54
- Stamford54
- Waterford town54
- West Mountain54
- Wilton Center54
- Woodbury54
- Berlin53
- Greater Bridgeport52
- Glastonbury51
- Cornwall50
- Danbury50
- Wauregan46
- Oxford44
- Winsted44
- Western Connecticut43
- New Milford42
- Newtown41
- Tolland39
- Sherman38
- Greenwich33
- Cheshire32
- Riverton20
- Canton18
