Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 20:53, Sep 07
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?
- Guilford51
- Coventry46
- Fairfield42
- Montville37
- New Canaan37
- Lyme35
- Groton34
- Mansfield34
- Bolton33
- Bridgeport33
- Greenwich town33
- Berlin32
- Canterbury32
- Deep River32
- Glastonbury32
- Lebanon32
- New Haven32
- Shelton32
- Trumbull32
- Winchester32
- East Hartford30
- Stafford30
- West Hartford30
- Branford29
- Byram29
- Cornwall29
- Hartford29
- Killingworth29
- Madison29
- Old Greenwich29
- Oxford29
- Pemberwick29
- Cos Cob28
- Glenville28
- Newtown28
- Riverside28
- Rock Ridge28
- Sherman28
- Darien Downtown27
- Norwalk27
- Stamford27
- Stratford27
- Conning Towers-Nautilus Park26
- Fenwick26
- Greater Bridgeport26
- Greens Farms26
- Long Hill, Southeastern Connecticut County26
- Lordship26
- Mashantucket26
- Mystic26
- New London26
- Niantic26
- Noank26
- Old Lyme26
- Old Mystic26
- Old Saybrook Center26
- Pawcatuck26
- Pomfret26
- Poquonock Bridge26
- Saugatuck26
- Southport26
- Tolland26
- Waterford town26
- Westport26
- Woodmont26
- Baltic25
- Branford Center25
- Chester Center25
- Clinton25
- Deep River Center25
- Gales Ferry25
- Guilford Center25
- Jewett City25
- Lisbon25
- Lower Connecticut River Valley25
- Madison Center25
- Milford25
- Moodus25
- Moosup25
- Norwich25
- Oxoboxo River25
- Plainfield Village25
- Salem25
- Saybrook Manor25
- South Central Connecticut25
- Southeastern Connecticut25
- West Haven25
- Westbrook Center25
- Ashford24
- Colchester24
- Coventry Lake24
- Cromwell24
- Danielson24
- Durham24
- East Brooklyn24
- East Hampton24
- Hebron24
- Higganum24
- Lake Pocotopaug24
- Mansfield Center24
- Mechanicsville24
- North Haven24
- Northeastern Connecticut24
- Northford24
- Orange24
- Oronoque24
- Portland24
- Quasset Lake24
- Quinnipiac University24
- South Coventry24
- South Windham24
- South Woodstock24
- Storrs24
- Terramuggus24
- Trumbull Center24
- Wallingford24
- Wallingford Center24
- Waterbury24
- Waterford24
- Wauregan24
- Weston24
- Willimantic24
- Wilton Center24
- Woodbridge24
- Ansonia23
- Broad Brook23
- Cannondale23
- Capitol23
- Cheshire Village23
- Crystal Lake23
- Derby23
- East Haven23
- Ellington23
- Glastonbury Center23
- Kensington23
- Manchester23
- Meriden23
- Milford town23
- New Britain23
- Newington23
- North Grosvenor Dale23
- Quinebaug23
- Rockville23
- Seymour23
- Somers23
- South Windsor23
- Stafford Springs23
- Tashua23
- Wethersfield23
- Bethel22
- Blue Hills22
- Greenwich22
- Hamden22
- Hazardville22
- Killingly22
- Naugatuck22
- Naugatuck Valley22
- Old Saybrook22
- Plainville22
- Plantsville22
- Prospect22
- Redding Center22
- Ridgefield22
- Sandy Hook22
- Southington22
- Southwood Acres22
- Western Connecticut22
- Windsor22
- Windsor Locks22
- Bigelow Corners21
- Bristol21
- Enfield21
- Farmington21
- Heritage Village21
- Middlebury21
- Oakville21
- Plymouth21
- Sherwood Manor21
- Suffield Depot21
- Thompsonville21
- Watertown21
- Woodbury Center21
- Bethlehem Village20
- New Milford20
- Simsbury Center20
- Tariffville20
- Terryville20
- Thomaston20
- Weatogue20
- Canaan19
- Canton19
- Canton Valley19
- Collinsville19
- Gaylordsville19
- Litchfield19
- New Hartford Center19
- New Preston19
- North Granby19
- Northwest Harwinton19
- Northwest Hills19
- Riverton19
- Salmon Brook19
- Torrington19
- Torrington town19
- Washington19
- West Simsbury19
- Winsted19
- Woodbury18
- Colebrook17
- Danbury17
- Simsbury17
- Essex Village12
- Cheshire3
- Plainfield3
- Redding2
- West Mountain1
