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 | Guilford Center | 82 |
| 2 | New Haven | 82 |
| 3 | East Haven | 81 |
| 4 | Oxford | 68 |
| 5 | Trumbull | 64 |
| 6 | Bridgeport | 60 |
| 7 | Groton | 58 |
| 8 | Northwest Harwinton | 58 |
| 9 | South Coventry | 58 |
| 10 | Sherman | 54 |
(local time)
SEE WORLD AQI RANKINGAir Quality contributors Sources
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Contributors
2
Data sources
2
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LIVE AQI CITY RANKING
Real-time Connecticut
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Winsted | 27 |
| 2 | West Cornwall | 31 |
| 3 | Westport | 42 |
| 4 | East Hartford | 45 |
| 5 | Danbury | 46 |
| 6 | Hartford | 47 |
| 7 | Waterbury | 53 |
| 8 | Sherman | 54 |
| 9 | Groton | 58 |
| 10 | Northwest Harwinton | 58 |
(local time)
SEE WORLD AQI RANKING3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
How to best protect from air pollution?
Connecticut air quality data sources
Contributors 2
- Environmental Protection Agency
9 stations
Government
- 10 Anonymous contributor
10 stations
- Claim my PurpleAir
Anonymous
Data sources 2
Which is the most polluted city in Connecticut?
- Guilford Center82
- New Haven82
- East Haven81
- Darien78
- Stamford78
- City of Milford (balance)76
- Milford76
- Orange76
- Stratford76
- West Haven76
- Woodmont76
- Easton74
- Fairfield74
- Southport74
- Ansonia72
- Byram72
- Cos Cob72
- Derby72
- Glenville72
- Greenwich72
- Hamden72
- Old Greenwich72
- Pemberwick72
- Riverside72
- Seymour72
- Shelton72
- Woodbridge72
- East Norwalk70
- New Canaan70
- North Stamford70
- Norwalk70
- Ridgefield70
- Wilton70
- Oxford68
- Newtown66
- Bethel64
- Georgetown64
- New Fairfield64
- Trumbull64
- Bridgeport60
- New Milford59
- Groton58
- Northwest Harwinton58
- South Coventry58
- Bethlehem Village57
- Cheshire57
- Cheshire Village57
- Heritage Village57
- Middlebury57
- Naugatuck57
- Oakville57
- Prospect57
- Southbury57
- Washington57
- Watertown57
- Wolcott57
- Woodbury57
- Woodbury Center57
- Kent55
- New Preston55
- Sherman54
- Blue Hills53
- Branford53
- Branford Center53
- Bristol53
- Canton Valley53
- Collinsville53
- Durham53
- Farmington53
- Guilford53
- Kensington53
- Litchfield53
- Meriden53
- New Britain53
- Newington53
- North Branford53
- North Haven53
- Plainville53
- Plymouth53
- Terryville53
- Thomaston53
- Torrington53
- Wallingford53
- Wallingford Center53
- Waterbury53
- Weatogue53
- West Hartford53
- West Torrington53
- Baltic51
- Glastonbury51
- Glastonbury Center51
- Lisbon51
- Manchester51
- Norwich51
- South Windsor51
- Wethersfield51
- Windsor51
- Hartford47
- Chester Center46
- Colchester46
- Cromwell46
- Danbury46
- East Haddam46
- East Hampton46
- East Windsor46
- Ellington46
- Enfield46
- Hazardville46
- Hebron46
- Higganum46
- Jewett City46
- Lake Pocotopaug46
- Middletown46
- Moodus46
- New Hartford Center46
- North Granby46
- Portland46
- Preston City46
- Rockville46
- Salem46
- Salmon Brook46
- Sherwood Manor46
- Simsbury Center46
- Somers46
- Southwood Acres46
- Suffield Depot46
- Tariffville46
- Terramuggus46
- Thompsonville46
- West Simsbury46
- Winchester Center46
- Windsor Locks46
- East Hartford45
- Canaan42
- Central Waterford42
- Clinton42
- Conning Towers-Nautilus Park42
- Coventry Lake42
- Deep River Center42
- Essex Village42
- Gales Ferry42
- Ledyard42
- Long Hill42
- Madison42
- Madison Center42
- Mansfield City42
- Montville Center42
- Mystic42
- New London42
- Niantic42
- Noank42
- Old Mystic42
- Old Saybrook42
- Old Saybrook Center42
- Oxoboxo River42
- Pawcatuck42
- Poquonock Bridge42
- Storrs42
- Uncasville42
- Waterford42
- Westbrook Center42
- Westport42
- Saybrook Manor38
- West Cornwall31
- Crystal Lake29
- Danielson29
- East Brooklyn29
- Killingly Center29
- Moosup29
- Plainfield29
- Plainfield Village29
- Pomfret Center29
- South Windham29
- Stafford29
- Stafford Springs29
- Tolland29
- Wauregan29
- Willimantic29
- Windham29
- Winsted27
- North Grosvenor Dale25
- Putnam25
- Quinebaug25
- South Woodstock25
- Thompson25
