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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 | Hartford | 43 |
| 2 | Northwest Harwinton | 42 |
| 3 | East Hartford | 38 |
| 4 | West Cornwall | 38 |
| 5 | West Hartford | 38 |
| 6 | Groton | 37 |
| 7 | Waterbury | 36 |
| 8 | Bridgeport | 35 |
| 9 | Guilford Center | 35 |
| 10 | New Haven | 34 |
(local time)
SEE WORLD AQI RANKINGData provided by
9 Anonymous contributor
LIVE AQI CITY RANKING
Real-time Connecticut
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Sherman | 23 |
| 2 | Fairfield | 26 |
| 3 | Westport | 26 |
| 4 | Danbury | 28 |
| 5 | Winsted | 29 |
| 6 | New Haven | 34 |
| 7 | South Coventry | 34 |
| 8 | Bridgeport | 35 |
| 9 | Guilford Center | 35 |
| 10 | Waterbury | 36 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
How to best protect from air pollution?
Community Contributors
1 Contributors
2 Other Sources
Which is the most polluted city in Connecticut?
- Hartford43
- Northwest Harwinton42
- Georgetown38
- Woodbury Center38
- Woodbury38
- New Fairfield38
- Bristol38
- Canton Valley38
- Wolcott38
- Cheshire38
- Cheshire Village38
- Collinsville38
- Southbury38
- East Hartford38
- Prospect38
- Plymouth38
- Plainville38
- Oxford38
- Terryville38
- West Torrington38
- Thomaston38
- Farmington38
- Bethlehem Village38
- West Hartford38
- New Milford38
- West Cornwall38
- Newington38
- Weatogue38
- Oakville38
- Heritage Village38
- Blue Hills38
- Torrington38
- Bethel38
- Litchfield38
- Watertown38
- Naugatuck38
- Newtown38
- Middlebury38
- Washington38
- New Hartford Center38
- Groton37
- Waterbury36
- Guilford Center35
- Bridgeport35
- Tariffville34
- Seymour34
- Winchester Center34
- South Windsor34
- Salmon Brook34
- Derby34
- West Simsbury34
- Woodbridge34
- Manchester34
- North Granby34
- Glastonbury34
- Glastonbury Center34
- Wethersfield34
- Simsbury Center34
- Shelton34
- Ansonia34
- Hamden34
- Windsor34
- New Haven34
- South Coventry34
- New Canaan29
- New Britain29
- Meriden29
- Trumbull29
- Mansfield City29
- Kent29
- North Stamford29
- Kensington29
- Norwalk29
- Hazardville29
- Thompsonville29
- Somers29
- Enfield29
- Ellington29
- Easton29
- Suffield Depot29
- New Preston29
- East Norwalk29
- Storrs29
- Winsted29
- Southwood Acres29
- Southport29
- Ridgefield29
- Durham29
- Rockville29
- Wilton29
- Sherwood Manor29
- Coventry Lake29
- Windsor Locks29
- East Windsor29
- Danbury28
- Westport26
- Fairfield26
- East Brooklyn25
- Cromwell25
- East Hampton25
- Norwich25
- Colchester25
- Middletown25
- Milford25
- Hebron25
- Terramuggus25
- Orange25
- Moodus25
- Moosup25
- Wallingford Center25
- Stratford25
- Plainfield25
- Plainfield Village25
- Woodmont25
- Higganum25
- Pomfret Center25
- Jewett City25
- Portland25
- Preston City25
- Danielson25
- City of Milford (balance)25
- Killingly Center25
- Wallingford25
- Lake Pocotopaug25
- West Haven25
- Salem25
- Lisbon25
- Willimantic25
- Wauregan25
- Baltic25
- South Windham25
- North Branford25
- Windham25
- Canaan25
- North Haven25
- Sherman23
- Branford Center21
- Riverside21
- Quinebaug21
- Putnam21
- Stafford21
- Stafford Springs21
- Stamford21
- Poquonock Bridge21
- Pemberwick21
- Oxoboxo River21
- Old Saybrook Center21
- Old Saybrook21
- Thompson21
- Old Greenwich21
- Tolland21
- North Grosvenor Dale21
- Niantic21
- Uncasville21
- New London21
- South Woodstock21
- Branford21
- Waterford21
- Long Hill21
- Ledyard21
- Guilford21
- Greenwich21
- Glenville21
- Gales Ferry21
- Essex Village21
- East Haven21
- East Haddam21
- Deep River Center21
- Darien21
- Crystal Lake21
- Cos Cob21
- Conning Towers-Nautilus Park21
- Chester Center21
- Central Waterford21
- Byram21
- Montville Center21
- Westbrook Center17
- Old Mystic17
- Clinton17
- Pawcatuck17
- Madison17
- Mystic17
- Noank17
- Madison Center17
- Saybrook Manor9
