Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 14:32, Nov 11
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?
- Shelton156
- Ashford54
- Baltic54
- Bethlehem Village54
- Blue Hills54
- Branford Center54
- Bristol54
- Broad Brook54
- Canton Valley54
- Capitol54
- Cheshire Village54
- Chester Center54
- Clinton54
- Colchester54
- Collinsville54
- Coventry Lake54
- Cromwell54
- Crystal Lake54
- Danielson54
- Deep River Center54
- Durham54
- East Brooklyn54
- East Hampton54
- Ellington54
- Farmington54
- Fenwick54
- Glastonbury Center54
- Guilford Center54
- Hazardville54
- Heritage Village54
- Higganum54
- Jewett City54
- Kensington54
- Lake Pocotopaug54
- Lisbon54
- Litchfield54
- Lower Connecticut River Valley54
- Lyme54
- Madison54
- Madison Center54
- Manchester54
- Mansfield Center54
- Meriden54
- Middlebury54
- Middletown54
- Moodus54
- Moosup54
- Naugatuck54
- Naugatuck Valley54
- New Britain54
- Newington54
- North Haven54
- Northeastern Connecticut54
- Northford54
- Northwest Harwinton54
- Norwich54
- Oakville54
- Old Lyme54
- Old Saybrook Center54
- Orange54
- Oxoboxo River54
- Plainfield Village54
- Plainville54
- Plantsville54
- Plymouth54
- Pomfret54
- Portland54
- Prospect54
- Quasset Lake54
- Quinnipiac University54
- Rockville54
- Salem54
- Salmon Brook54
- Saybrook Manor54
- Seymour54
- Sherwood Manor54
- Simsbury Center54
- Somers54
- South Central Connecticut54
- South Coventry54
- South Windham54
- South Windsor54
- South Woodstock54
- Southeastern Connecticut54
- Southington54
- Southwood Acres54
- Stafford54
- Stafford Springs54
- Storrs54
- Suffield Depot54
- Tariffville54
- Terramuggus54
- Terryville54
- Thomaston54
- Thompsonville54
- Wallingford54
- Wallingford Center54
- Watertown54
- Wauregan54
- Weatogue54
- West Haven54
- West Simsbury54
- Westbrook Center54
- Wethersfield54
- Willimantic54
- Windsor Locks54
- Woodbridge54
- Woodbury Center54
- Bethel53
- Bigelow Corners53
- Conning Towers-Nautilus Park53
- Gales Ferry53
- Gaylordsville53
- Long Hill, Southeastern Connecticut County53
- Mashantucket53
- Mechanicsville53
- Milford53
- Mystic53
- New Hartford Center53
- New London53
- New Milford53
- New Preston53
- Niantic53
- Noank53
- North Granby53
- North Grosvenor Dale53
- Old Mystic53
- Oronoque53
- Pawcatuck53
- Poquonock Bridge53
- Quinebaug53
- Redding Center53
- Sandy Hook53
- Stratford53
- Tashua53
- Torrington53
- Torrington town53
- Trumbull Center53
- Waterford53
- Waterford town53
- Woodmont53
- Cannondale52
- Greater Bridgeport52
- Greens Farms52
- Lordship52
- Northwest Hills52
- Ridgefield52
- Riverton52
- Saugatuck52
- Southport52
- Western Connecticut52
- Weston52
- Westport52
- Wilton Center52
- Winsted52
- Darien Downtown51
- Norwalk51
- Stamford51
- Cos Cob50
- Greenwich town50
- Rock Ridge50
- Glenville49
- Old Greenwich49
- Pemberwick49
- Riverside49
- Byram48
- Waterbury46
- Hartford45
- Canaan43
- Derby38
- Hamden38
- East Hartford37
- Canterbury35
- Windsor33
- Cornwall31
- Killingly31
- Simsbury31
- Coventry28
- Ansonia26
- Fairfield26
- Old Saybrook26
- Oxford26
- New Haven25
- Groton21
- Killingworth21
- Berlin20
- Deep River20
- Bridgeport19
- West Hartford19
- Bolton18
- Branford18
- Glastonbury18
- Montville17
- Plainfield17
- Mansfield16
- Sherman16
- Trumbull16
- Lebanon14
- Tolland14
- Newtown13
- Danbury12
- East Haven12
- Winchester12
- Guilford11
- Essex Village9
- Milford town9
- Woodbury9
- Enfield7
- New Canaan7
- Greenwich6
- Washington6
- Colebrook4
- Canton0
- Cheshire0
- Columbia0
- Hebron0
- Redding0
- West Mountain0
