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 | 41 |
| 2 | East Hartford | 32 |
| 3 | Groton | 22 |
| 4 | Waterbury | 21 |
| 5 | Bridgeport | 20 |
| 6 | West Hartford | 20 |
| 7 | Danbury | 17 |
| 8 | Darien | 15 |
| 9 | New Haven | 12 |
| 10 | Fairfield | 9 |
(local time)
SEE WORLD AQI RANKINGAir Quality contributors Sources
Data provided by
Contributors
3
Data sources
2
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Become a contributorLIVE AQI CITY RANKING
Real-time Connecticut
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Sherman | 1 |
| 2 | Trumbull | 1 |
| 3 | West Cornwall | 1 |
| 4 | Winsted | 1 |
| 5 | South Coventry | 2 |
| 6 | Northwest Harwinton | 3 |
| 7 | East Haven | 5 |
| 8 | Guilford Center | 7 |
| 9 | Oxford | 8 |
| 10 | Fairfield | 9 |
(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?
Connecticut air quality data sources
Contributors 3
- AirVisual
3 stations
- Environmental Protection Agency
8 stations
- 12 Anonymous contributor
12 stations
- Claim my PurpleAir
Anonymous
Data sources 2
Which is the most polluted city in Connecticut?
- Hartford41
- East Hartford32
- Salmon Brook29
- Simsbury Center29
- West Simsbury29
- Tariffville29
- North Granby29
- East Windsor25
- Ellington25
- Enfield25
- Windsor Locks25
- Southwood Acres25
- Suffield Depot25
- Somers25
- Rockville25
- Thompsonville25
- Hazardville25
- Sherwood Manor25
- Groton22
- Glastonbury Center21
- Blue Hills21
- Manchester21
- New Hartford Center21
- South Windsor21
- Newington21
- Weatogue21
- Waterbury21
- Glastonbury21
- Plainville21
- Farmington21
- Wethersfield21
- Windsor21
- West Hartford20
- Bridgeport20
- Bristol17
- Canton Valley17
- Deep River Center17
- Hebron17
- Higganum17
- Durham17
- Lake Pocotopaug17
- East Haddam17
- East Hampton17
- Mansfield City17
- Meriden17
- Middletown17
- Moodus17
- Naugatuck17
- New Britain17
- Cheshire17
- Tolland17
- Cheshire Village17
- Thomaston17
- Chester Center17
- Niantic17
- Wolcott17
- Terryville17
- Terramuggus17
- Oakville17
- Old Saybrook17
- Old Saybrook Center17
- Kensington17
- Essex Village17
- Storrs17
- Colchester17
- Plymouth17
- Stafford Springs17
- Portland17
- Prospect17
- Stafford17
- Collinsville17
- Coventry Lake17
- Salem17
- Cromwell17
- Crystal Lake17
- Danbury17
- Darien15
- Noank13
- Uncasville13
- Mystic13
- Wilton13
- Glenville13
- New Canaan13
- New Fairfield13
- Greenwich13
- Conning Towers-Nautilus Park13
- New London13
- Cos Cob13
- Central Waterford13
- Hamden13
- Newtown13
- Woodbury Center13
- Baltic13
- North Branford13
- East Norwalk13
- Woodbury13
- North Haven13
- North Stamford13
- Heritage Village13
- Norwalk13
- Norwich13
- Westport13
- Old Greenwich13
- Old Mystic13
- Jewett City13
- Bethel13
- Watertown13
- Waterford13
- Oxoboxo River13
- Pawcatuck13
- Pemberwick13
- Bethlehem Village13
- Stamford13
- Ledyard13
- Lisbon13
- Byram13
- Poquonock Bridge13
- Long Hill13
- Preston City13
- Washington13
- Wallingford Center13
- Woodbridge13
- Ridgefield13
- Riverside13
- Derby13
- Gales Ferry13
- Middlebury13
- Southbury13
- Seymour13
- Shelton13
- Georgetown13
- Wallingford13
- Montville Center13
- Ansonia13
- New Haven12
- Madison9
- Branford9
- South Woodstock9
- Saybrook Manor9
- Southport9
- Quinebaug9
- Putnam9
- Pomfret Center9
- Plainfield Village9
- Plainfield9
- Stratford9
- Branford Center9
- Orange9
- Canaan9
- North Grosvenor Dale9
- New Preston9
- Thompson9
- New Milford9
- Woodmont9
- Torrington9
- City of Milford (balance)9
- Moosup9
- Milford9
- Madison Center9
- South Windham9
- Litchfield9
- Killingly Center9
- Kent9
- Wauregan9
- Clinton9
- Danielson9
- Guilford9
- West Haven9
- Fairfield9
- West Torrington9
- Westbrook Center9
- Easton9
- Windham9
- Willimantic9
- East Brooklyn9
- Winchester Center9
- Oxford8
- Guilford Center7
- East Haven5
- Northwest Harwinton3
- South Coventry2
- West Cornwall1
- Winsted1
- Trumbull1
- Sherman1
