Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 10:57, Aug 14
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?
- Coventry65
- Killingly56
- Greenwich55
- Norwich55
- Byram54
- Cos Cob54
- Darien Downtown54
- Glenville54
- Old Greenwich54
- Pemberwick54
- Riverside54
- Rock Ridge54
- Stamford54
- Norwalk53
- Ridgefield53
- Ansonia52
- Bethel52
- Bethlehem Village52
- Bigelow Corners52
- Blue Hills52
- Branford Center52
- Bristol52
- Broad Brook52
- Cannondale52
- Canton Valley52
- Capitol52
- Cheshire Village52
- Collinsville52
- Cromwell52
- Crystal Lake52
- Derby52
- Ellington52
- Fairfield52
- Farmington52
- Gaylordsville52
- Glastonbury Center52
- Greater Bridgeport52
- Greens Farms52
- Hazardville52
- Heritage Village52
- Kensington52
- Litchfield52
- Lordship52
- Manchester52
- Meriden52
- Middlebury52
- Milford52
- Naugatuck52
- Naugatuck Valley52
- New Britain52
- New Hartford Center52
- New Milford52
- New Preston52
- Newington52
- North Granby52
- North Haven52
- Northford52
- Northwest Harwinton52
- Northwest Hills52
- Oakville52
- Orange52
- Oronoque52
- Plainville52
- Plantsville52
- Plymouth52
- Prospect52
- Quinnipiac University52
- Redding Center52
- Riverton52
- Rockville52
- Salmon Brook52
- Sandy Hook52
- Saugatuck52
- Seymour52
- Sherwood Manor52
- Simsbury Center52
- Somers52
- South Central Connecticut52
- South Windsor52
- Southington52
- Southport52
- Southwood Acres52
- Suffield Depot52
- Tariffville52
- Tashua52
- Terryville52
- Thomaston52
- Thompsonville52
- Torrington52
- Torrington town52
- Trumbull Center52
- Wallingford52
- Wallingford Center52
- Washington52
- Waterbury52
- Watertown52
- Weatogue52
- West Haven52
- West Simsbury52
- Western Connecticut52
- Weston52
- Wethersfield52
- Wilton Center52
- Windsor52
- Winsted52
- Woodbridge52
- Woodbury Center52
- Woodmont52
- Coventry Lake51
- Danbury51
- Durham51
- East Haven51
- Greenwich town51
- Groton51
- Lake Pocotopaug51
- Mechanicsville51
- Middletown51
- North Grosvenor Dale51
- Portland51
- Quinebaug51
- Stafford Springs51
- Terramuggus51
- Danielson50
- East Brooklyn50
- East Hampton50
- Guilford Center50
- Hamden50
- Hebron50
- Higganum50
- Madison Center50
- Mansfield Center50
- Moosup50
- Northeastern Connecticut50
- Old Saybrook50
- Plainfield50
- Plainfield Village50
- Quasset Lake50
- South Coventry50
- South Woodstock50
- Storrs50
- Wauregan50
- Willimantic50
- Baltic49
- Canaan49
- Chester Center49
- Clinton49
- Colchester49
- Conning Towers-Nautilus Park49
- Deep River Center49
- Essex Village49
- Fenwick49
- Gales Ferry49
- Jewett City49
- Lisbon49
- Long Hill, Southeastern Connecticut County49
- Lower Connecticut River Valley49
- Mashantucket49
- Moodus49
- Mystic49
- New London49
- Niantic49
- Noank49
- Old Lyme49
- Old Mystic49
- Old Saybrook Center49
- Oxoboxo River49
- Pawcatuck49
- Pomfret49
- Poquonock Bridge49
- Salem49
- Saybrook Manor49
- South Windham49
- Southeastern Connecticut49
- Westbrook Center49
- Ashford48
- Mansfield48
- Hartford47
- Stafford47
- East Hartford46
- Canterbury45
- Madison45
- Montville44
- Redding44
- Stratford44
- Bridgeport43
- Colebrook43
- Trumbull42
- Windsor Locks42
- New Canaan41
- West Hartford41
- Berlin39
- Simsbury39
- Glastonbury37
- Lyme37
- Newtown37
- Waterford37
- Deep River36
- Woodbury36
- Sherman35
- Cornwall34
- Lebanon34
- Branford33
- New Haven33
- Tolland32
- Winchester32
- Guilford31
- Killingworth31
- West Mountain31
- Westport31
- Oxford30
- Enfield29
- Shelton29
- Milford town28
- Cheshire23
- Waterford town9
- Canton1
