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Air quality in Connecticut
Air quality index (AQI) and PM2.5 air pollution in Connecticut
LIVE AQI CITY RANKING
Real-time Connecticut
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Bridgeport | 61 |
| 2 | Greenwich | 60 |
| 3 | Ridgefield | 60 |
| 4 | Stamford | 60 |
| 5 | Torrington | 59 |
| 6 | Woodbury | 59 |
| 7 | Fairfield | 58 |
| 8 | Danbury | 57 |
| 9 | Mansfield City | 57 |
| 10 | Middletown | 57 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
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LIVE AQI CITY RANKING
Real-time Connecticut
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Northwest Harwinton | 8 |
| 2 | Middlebury | 12 |
| 3 | Somers | 40 |
| 4 | West Cornwall | 40 |
| 5 | Waterbury | 43 |
| 6 | Waterford | 43 |
| 7 | West Hartford | 43 |
| 8 | Enfield | 44 |
| 9 | Groton | 44 |
| 10 | South Coventry | 47 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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- Bridgeport61
- Greenwich60
- Ridgefield60
- Stamford60
- Torrington59
- Woodbury59
- Fairfield58
- Danbury57
- Mansfield City57
- Middletown57
- Newtown57
- North Stamford57
- Trumbull57
- Hartford56
- Oxford56
- East Hartford55
- East Haven54
- Guilford54
- Storrs54
- Branford53
- Glastonbury53
- Milford53
- Montville Center53
- New Haven53
- Norwich53
- Tolland53
- Hamden52
- Plainfield52
- Pomfret Center52
- Hebron51
- Sherman51
- Westport51
- Windham51
- Winsted49
- South Coventry47
- Enfield44
- Groton44
- Waterbury43
- Waterford43
- West Hartford43
- Byram42
- Glenville42
- Old Greenwich42
- Pemberwick42
- Cos Cob41
- Riverside41
- Somers40
- West Cornwall40
- Darien38
- East Norwalk38
- New Canaan38
- Norwalk38
- Southport37
- Wilton37
- Easton36
- Georgetown36
- Stratford36
- Bethel35
- New Fairfield34
- City of Milford (balance)33
- Woodmont33
- Ansonia32
- Bethlehem Village32
- Branford Center32
- Derby32
- Heritage Village32
- Kent32
- Naugatuck32
- New Milford32
- New Preston32
- Orange32
- Prospect32
- Seymour32
- Shelton32
- Southbury32
- Washington32
- Watertown32
- West Haven32
- Woodbridge32
- Woodbury Center32
- Bristol31
- Cheshire31
- Cheshire Village31
- Clinton31
- Guilford Center31
- Litchfield31
- Madison31
- Madison Center31
- Meriden31
- North Branford31
- North Haven31
- Oakville31
- Plymouth31
- Terryville31
- Thomaston31
- Wallingford31
- Wallingford Center31
- West Torrington31
- Wolcott31
- Blue Hills30
- Canaan30
- Canton Valley30
- Central Waterford30
- Chester Center30
- Colchester30
- Collinsville30
- Conning Towers-Nautilus Park30
- Cromwell30
- Deep River Center30
- Durham30
- East Haddam30
- East Hampton30
- Essex Village30
- Farmington30
- Gales Ferry30
- Glastonbury Center30
- Higganum30
- Kensington30
- Lake Pocotopaug30
- Ledyard30
- Long Hill30
- Moodus30
- Mystic30
- New Britain30
- New Hartford Center30
- New London30
- Newington30
- Niantic30
- Noank30
- North Granby30
- Old Mystic30
- Old Saybrook30
- Old Saybrook Center30
- Oxoboxo River30
- Pawcatuck30
- Plainville30
- Poquonock Bridge30
- Portland30
- Preston City30
- Salem30
- Salmon Brook30
- Saybrook Manor30
- Simsbury Center30
- South Windsor30
- Suffield Depot30
- Tariffville30
- Terramuggus30
- Uncasville30
- Weatogue30
- West Simsbury30
- Westbrook Center30
- Wethersfield30
- Winchester Center30
- Windsor30
- Windsor Locks30
- Baltic29
- Coventry Lake29
- Crystal Lake29
- East Windsor29
- Ellington29
- Hazardville29
- Jewett City29
- Lisbon29
- Manchester29
- Plainfield Village29
- Rockville29
- Sherwood Manor29
- South Windham29
- Southwood Acres29
- Stafford Springs29
- Thompsonville29
- Willimantic29
- Moosup28
- Stafford28
- Wauregan28
- Danielson27
- East Brooklyn27
- Killingly Center25
- Putnam25
- North Grosvenor Dale24
- South Woodstock24
- Thompson24
- Quinebaug23
- Middlebury12
- Northwest Harwinton8
AQI US, Metric