Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 14:14, Sep 08
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?
- Conning Towers-Nautilus Park56
- Darien Downtown56
- Greens Farms56
- Long Hill, Southeastern Connecticut County56
- Mystic56
- New London56
- Niantic56
- Noank56
- Norwalk56
- Old Greenwich56
- Old Mystic56
- Pawcatuck56
- Poquonock Bridge56
- Saugatuck56
- Southport56
- Westport56
- Ansonia55
- Ashford55
- Baltic55
- Bethel55
- Bethlehem Village55
- Bigelow Corners55
- Blue Hills55
- Bolton55
- Branford Center55
- Bristol55
- Broad Brook55
- Byram55
- Cannondale55
- Canton55
- Canton Valley55
- Capitol55
- Cheshire Village55
- Chester Center55
- Clinton55
- Colchester55
- Collinsville55
- Cos Cob55
- Coventry Lake55
- Cromwell55
- Crystal Lake55
- Deep River Center55
- Derby55
- Durham55
- East Brooklyn55
- East Hampton55
- Ellington55
- Farmington55
- Fenwick55
- Gales Ferry55
- Glastonbury Center55
- Glenville55
- Greater Bridgeport55
- Greenwich town55
- Guilford Center55
- Hazardville55
- Hebron55
- Heritage Village55
- Higganum55
- Jewett City55
- Kensington55
- Lake Pocotopaug55
- Lisbon55
- Litchfield55
- Lordship55
- Lower Connecticut River Valley55
- Madison55
- Madison Center55
- Manchester55
- Mansfield Center55
- Mashantucket55
- Meriden55
- Middlebury55
- Middletown55
- Milford55
- Moodus55
- Moosup55
- Naugatuck55
- Naugatuck Valley55
- New Britain55
- New Milford55
- Newington55
- North Haven55
- Northeastern Connecticut55
- Northford55
- Northwest Harwinton55
- Norwich55
- Oakville55
- Old Lyme55
- Old Saybrook Center55
- Orange55
- Oronoque55
- Oxoboxo River55
- Pemberwick55
- Plainfield Village55
- Plainville55
- Plantsville55
- Plymouth55
- Pomfret55
- Portland55
- Prospect55
- Quinnipiac University55
- Redding55
- Redding Center55
- Ridgefield55
- Riverside55
- Rock Ridge55
- Rockville55
- Salem55
- Salmon Brook55
- Sandy Hook55
- Saybrook Manor55
- Seymour55
- Sherwood Manor55
- Simsbury Center55
- Somers55
- South Central Connecticut55
- South Coventry55
- South Windham55
- South Windsor55
- Southeastern Connecticut55
- Southington55
- Southwood Acres55
- Stafford55
- Stafford Springs55
- Stamford55
- Storrs55
- Stratford55
- Suffield Depot55
- Tariffville55
- Tashua55
- Terramuggus55
- Terryville55
- Thomaston55
- Thompsonville55
- Trumbull Center55
- Wallingford55
- Wallingford Center55
- Washington55
- Waterford town55
- Watertown55
- Wauregan55
- Weatogue55
- West Haven55
- West Simsbury55
- Westbrook Center55
- Western Connecticut55
- Weston55
- Wethersfield55
- Willimantic55
- Wilton Center55
- Windsor55
- Windsor Locks55
- Woodbridge55
- Woodbury Center55
- Woodmont55
- Danielson54
- Gaylordsville54
- Mechanicsville54
- New Hartford Center54
- New Preston54
- North Granby54
- North Grosvenor Dale54
- Northwest Hills54
- Quasset Lake54
- Quinebaug54
- Riverton54
- South Woodstock54
- Torrington54
- Torrington town54
- Winsted54
- Canaan52
- Coventry51
- Hartford51
- Plainfield45
- Hamden39
- East Hartford38
- Groton37
- Canterbury36
- Fairfield36
- Trumbull35
- Waterbury34
- Montville32
- Mansfield31
- Berlin29
- Sherman29
- Bridgeport28
- East Haven28
- Greenwich28
- Killingly28
- Old Saybrook28
- Glastonbury27
- Guilford27
- Lebanon27
- Lyme27
- Winchester26
- Branford25
- Cornwall24
- Deep River24
- Killingworth24
- New Haven24
- New Canaan23
- Tolland23
- Waterford23
- Danbury22
- Enfield22
- Essex Village22
- Simsbury22
- Newtown21
- Oxford20
- West Hartford19
- Shelton18
- Woodbury17
- Milford town14
- West Mountain8
- Colebrook4
- Cheshire2
