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Worst Air Quality in Connecticut

Top 66 cities ranked by worst air quality

Best Cities For...

Composite rankings combining multiple weighted metrics — 5 topics across U.S. Census, FBI, NOAA and CDC data.

Best Cities for Retirees
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Best Cities for Families
Strong schools, low crime, affordable homes and family-friendly commutes.
Best Cities for Young Professionals
High incomes, educated peers, transit access and an under-35 demographic.
Most Affordable Cities
The lowest cost of living across home prices, rent, services and rent burden.
Population & Density
Largest Cities Smallest Cities Most Dense Least Dense
Economy
Highest Income Lowest Income Lowest Unemployment Highest Unemployment Lowest Poverty Highest Poverty Highest Wages Cheapest Cost of Living
Housing
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Demographics & Education
Most Educated Best Schools Most Graduate Degrees Youngest Cities Oldest Cities Most Veterans
Health & Safety
Safest Cities Highest Crime Healthiest Cities Lowest Smoking Best Doctor Access Best Dental Access
Climate & Air
Warmest Cities Coldest Cities Rainiest Cities Driest Cities Sunniest Cities Snowiest Cities Cleanest Air Worst Air Quality
Quality of Life
Shortest Commute Most Work From Home
Civic & Politics
Most Republican Most Democratic Most Disasters
Geography & Infrastructure
Highest Elevation Best Broadband Most EV Stations Most Libraries Most Restaurants
All Countries  ·  United States  ·  Connecticut

Worst Air Quality — Connecticut

1 New Haven AQI 41
2 Conning Towers-Nautilus Park AQI 39
3 Winsted AQI 39
4 Ridgefield AQI 39
5 Putnam AQI 39
6 Cos Cob AQI 39
7 Thompsonville AQI 39
8 New Milford AQI 39
9 Glastonbury Center AQI 39
10 Southwood Acres AQI 39
11 New Canaan AQI 39
12 Long Hill CDP (Greater Bridgeport County) AQI 39
13 Riverside AQI 39
14 Oakville AQI 39
15 Groton AQI 39
16 Sandy Hook AQI 39
17 Kensington AQI 39
18 Trumbull Center AQI 39
19 Bethel AQI 39
20 Staples AQI 39
21 Old Greenwich AQI 39
22 Rockville AQI 39
23 Hazardville AQI 39
24 Simsbury Center AQI 39
25 Northford AQI 39
26 Branford Center AQI 39
27 Cheshire Village AQI 39
28 Daniels Farm AQI 39
29 Portland AQI 39
30 Sherwood Manor AQI 39
31 Noroton AQI 39
32 Pawcatuck AQI 39
33 Terryville AQI 39
34 Byram AQI 39
35 Manchester AQI 39
36 Stamford AQI 39
37 Hartford AQI 39
38 Waterbury AQI 39
39 Norwalk AQI 39
40 Danbury AQI 39
41 New Britain AQI 39
42 West Hartford AQI 39
43 Bristol AQI 39
44 Meriden AQI 39
45 West Haven AQI 39
46 East Hartford AQI 39
47 Milford AQI 39
48 Middletown AQI 39
49 Shelton AQI 39
50 Norwich AQI 39
51 Bridgeport AQI 39
52 Torrington AQI 39
53 Naugatuck AQI 39
54 Newington AQI 39
55 East Haven AQI 39
56 Wethersfield AQI 39
57 North Haven AQI 39
58 Ansonia AQI 39
59 Wallingford Center AQI 39
60 Willimantic AQI 39
61 Greenwich AQI 39
62 Orange AQI 39
63 Storrs AQI 39
64 Windsor Locks AQI 39
65 Derby AQI 39
66 New London AQI 37

Explore the top 66 cities ranked by worst air quality in Connecticut.

City rankings help residents, researchers, and policymakers understand how communities compare across important quality-of-life measures.

Data is sourced from the U.S. Census Bureau, FBI Crime Statistics, and NOAA climate records.

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