Air quality in Connecticut
Air quality index (AQI⁺) and PM2.5 air pollution in Connecticut • 05:17, Sep 02
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?
- New Canaan154
- Coventry47
- North Grosvenor Dale44
- Quinebaug44
- Simsbury44
- Mechanicsville43
- Quasset Lake42
- South Woodstock42
- Stafford42
- Ashford41
- Byram41
- Danielson41
- East Brooklyn41
- Northeastern Connecticut41
- Pomfret41
- Somers41
- Stafford Springs41
- Crystal Lake40
- Glenville40
- Greenwich town40
- Hazardville40
- Moosup40
- Pemberwick40
- Rock Ridge40
- Sherwood Manor40
- Wauregan40
- Baltic39
- Broad Brook39
- Cannondale39
- Capitol39
- Cos Cob39
- Coventry Lake39
- Darien Downtown39
- Ellington39
- Greens Farms39
- Jewett City39
- Lisbon39
- Manchester39
- Mansfield Center39
- Norwalk39
- Old Greenwich39
- Plainfield Village39
- Ridgefield39
- Riverside39
- Rockville39
- Saugatuck39
- South Coventry39
- South Windham39
- South Windsor39
- Southwood Acres39
- Stamford39
- Storrs39
- Suffield Depot39
- Thompsonville39
- West Mountain39
- Weston39
- Westport39
- Willimantic39
- Wilton Center39
- Windsor39
- Windsor Locks39
- Ansonia38
- Bethel38
- Bigelow Corners38
- Blue Hills38
- Branford Center38
- Bristol38
- Canton38
- Canton Valley38
- Cheshire38
- Cheshire Village38
- Chester Center38
- Clinton38
- Colchester38
- Collinsville38
- Conning Towers-Nautilus Park38
- Cromwell38
- Deep River Center38
- Derby38
- Durham38
- East Hampton38
- Farmington38
- Fenwick38
- Gales Ferry38
- Gaylordsville38
- Glastonbury Center38
- Greater Bridgeport38
- Guilford Center38
- Heritage Village38
- Higganum38
- Kensington38
- Lake Pocotopaug38
- Long Hill, Southeastern Connecticut County38
- Lordship38
- Lower Connecticut River Valley38
- Madison38
- Madison Center38
- Mashantucket38
- Meriden38
- Middlebury38
- Milford38
- Moodus38
- Naugatuck38
- Naugatuck Valley38
- New Britain38
- New London38
- New Milford38
- Newington38
- Niantic38
- North Granby38
- North Haven38
- Northford38
- Norwich38
- Oakville38
- Old Lyme38
- Old Saybrook Center38
- Orange38
- Oronoque38
- Oxoboxo River38
- Plainville38
- Plantsville38
- Plymouth38
- Portland38
- Prospect38
- Quinnipiac University38
- Redding38
- Redding Center38
- Salem38
- Salmon Brook38
- Sandy Hook38
- Saybrook Manor38
- Seymour38
- Simsbury Center38
- South Central Connecticut38
- Southeastern Connecticut38
- Southport38
- Stratford38
- Tariffville38
- Tashua38
- Terramuggus38
- Terryville38
- Thomaston38
- Trumbull Center38
- Wallingford38
- Wallingford Center38
- Waterford town38
- Watertown38
- Weatogue38
- West Haven38
- West Simsbury38
- Westbrook Center38
- Western Connecticut38
- Wethersfield38
- Woodbridge38
- Woodbury Center38
- Woodmont38
- Bethlehem Village37
- Litchfield37
- Mystic37
- New Hartford Center37
- New Preston37
- Noank37
- Northwest Harwinton37
- Old Mystic37
- Pawcatuck37
- Poquonock Bridge37
- Riverton37
- Washington37
- Winsted37
- Torrington36
- Torrington town36
- Northwest Hills35
- Killingly33
- Canaan28
- Middletown25
- Cornwall24
- East Hartford24
- Hartford24
- New Haven24
- Groton23
- Danbury22
- Mansfield22
- Old Saybrook22
- Berlin21
- Fairfield21
- Greenwich20
- Tolland20
- Hamden18
- Montville18
- Plainfield17
- Waterbury17
- Canterbury16
- East Haven15
- West Hartford15
- Oxford14
- Lebanon13
- Woodbury13
- Glastonbury12
- Killingworth12
- Lyme11
- Sherman11
- Southington11
- Deep River10
- Newtown10
- Trumbull9
- Waterford9
- Winchester9
- Branford8
- Bridgeport8
- Enfield7
- Guilford7
- Milford town4
- Shelton3
- Essex Village1
- Colebrook0
