Connecticut Air Quality
Real-time AQI data and air quality trends for 185 cities across Connecticut.
Annual EPA summary data is not yet available for Connecticut. Individual city pages may still have current AQI readings.
Learn About Air Quality
What Is the AQI?
Understand how the Air Quality Index is calculated and what each level means for your health.
Pollutant Guide
Learn about PM2.5, ozone, and other pollutants that affect air quality across Connecticut.
National Rankings
Compare Connecticut cities to the rest of the US by air quality grade and median AQI.
All Cities in Connecticut
B
- Bridgeport(Greater Bridgeport County)
- Bristol(Naugatuck Valley County)
- Branford Center(South Central Connecticut County)
- Byram(Western Connecticut County)
- Broad Brook(Capitol County)
- Ball Pond(Western Connecticut County)
- Bethlehem Village(Naugatuck Valley County)
- Blue Hills(Capitol County)
- Baltic(Southeastern Connecticut County)
- Bigelow Corners(Western Connecticut County)
- Bantam(Northwest Hills County)
- Botsford(Western Connecticut County)
- Brookfield Center(Western Connecticut County)
- Bridgewater(Western Connecticut County)
- Branchville(Western Connecticut County)
- Bogus Hill(Western Connecticut County)
C
- Conning Towers Nautilus Park(Southeastern Connecticut County)
- Cos Cob(Western Connecticut County)
- Cheshire Village(Naugatuck Valley County)
- Collinsville(Capitol County)
- Coleytown(Western Connecticut County)
- Compo(Western Connecticut County)
- Coventry Lake(Capitol County)
- Chester Center(Lower Connecticut River Valley County)
- Crystal Lake(Capitol County)
- Canton Valley(Capitol County)
- Canaan(Northwest Hills County)
- Candlewood Orchards(Western Connecticut County)
- Cannondale(Western Connecticut County)
- Candlewood Isle(Western Connecticut County)
- Candlewood Shores(Western Connecticut County)
- Candlewood Lake Club(Western Connecticut County)
- Cornwall Bridge(Northwest Hills County)
- Candlewood Knolls(Western Connecticut County)
- Chimney Point(Western Connecticut County)
- Cornwall(Northwest Hills County)
D
- Danbury(Western Connecticut County)
- Derby(Naugatuck Valley County)
- Daniels Farm(Greater Bridgeport County)
- Danielson(Northeastern Connecticut County)
- Deep River Center(Lower Connecticut River Valley County)
- Darien Downtown(Western Connecticut County)
- Dayville(Northeastern Connecticut County)
- Dodgingtown(Western Connecticut County)
E
F
G
- Glastonbury Center(Capitol County)
- Greens Farms(Western Connecticut County)
- Glenville(Western Connecticut County)
- Guilford Center(South Central Connecticut County)
- Georgetown(Western Connecticut County)
- Gales Ferry(Southeastern Connecticut County)
- Gaylordsville(Western Connecticut County)
- Groton Long Point(Southeastern Connecticut County)
H
K
L
- Long Hill(Greater Bridgeport County)
- Lake Pocotopaug(Lower Connecticut River Valley County)
- Long Hill(Southeastern Connecticut County)
- Lordship(Greater Bridgeport County)
- Lakes West(Western Connecticut County)
- Lakes East(Western Connecticut County)
- Lake Bungee(Northeastern Connecticut County)
- Lakeville(Northwest Hills County)
- Lakeside Woods(Western Connecticut County)
- Lake Chaffee(Northeastern Connecticut County)
M
- Meriden(South Central Connecticut County)
- Milford city (South Central Connecticut County)
- Middletown(Lower Connecticut River Valley County)
- Mystic(Southeastern Connecticut County)
- Moosup(Northeastern Connecticut County)
- Moodus(Lower Connecticut River Valley County)
- Mill Plain(Greater Bridgeport County)
- Madison Center(South Central Connecticut County)
- Mansfield Center(Capitol County)
- Mechanicsville(Northeastern Connecticut County)
- Murray(Greater Bridgeport County)
- Mamanasco Lake(Western Connecticut County)
- Mashantucket(Southeastern Connecticut County)
N
- New Haven(South Central Connecticut County)
- Norwich(Southeastern Connecticut County)
- Norwalk(Western Connecticut County)
- New Britain(Capitol County)
- Naugatuck(Naugatuck Valley County)
- New London(Southeastern Connecticut County)
- New Canaan(Western Connecticut County)
- Northford(South Central Connecticut County)
- Noroton(Western Connecticut County)
- Niantic(Southeastern Connecticut County)
- Northwest Harwinton(Northwest Hills County)
- Noroton Heights(Western Connecticut County)
- Noank(Southeastern Connecticut County)
- North Granby(Capitol County)
- New Hartford Center(Northwest Hills County)
- North Grosvenor Dale(Northeastern Connecticut County)
- New Preston(Northwest Hills County)
O
P
- Pawcatuck(Southeastern Connecticut County)
- Pemberwick(Western Connecticut County)
- Plainfield Village(Northeastern Connecticut County)
- Plantsville(Capitol County)
- Poplar Plains(Western Connecticut County)
- Poquonock Bridge(Southeastern Connecticut County)
- Plattsville(Greater Bridgeport County)
- Pleasant Valley(Northwest Hills County)
Q
R
S
- Stamford(Western Connecticut County)
- Shelton(Naugatuck Valley County)
- Storrs(Capitol County)
- Sandy Hook(Western Connecticut County)
- Southwood Acres(Capitol County)
- Staples(Western Connecticut County)
- Simsbury Center(Capitol County)
- Sherwood Manor(Capitol County)
- Stafford Springs(Capitol County)
- Stepney(Greater Bridgeport County)
- Saugatuck(Western Connecticut County)
- Salmon Brook(Capitol County)
- Suffield Depot(Capitol County)
- Stratford Downtown(Greater Bridgeport County)
- Southport(Greater Bridgeport County)
- South Wilton(Western Connecticut County)
- Sacred Heart University(Greater Bridgeport County)
- South Coventry(Capitol County)
- Saybrook Manor(Lower Connecticut River Valley County)
- South Woodstock(Northeastern Connecticut County)
- South Windham(Southeastern Connecticut County)
- Sail Harbor(Western Connecticut County)
- Sherman(Western Connecticut County)
T
- Torrington(Northwest Hills County)
- Trumbull Center(Greater Bridgeport County)
- Thompsonville(Capitol County)
- Terryville(Naugatuck Valley County)
- Tashua(Greater Bridgeport County)
- Tokeneke(Western Connecticut County)
- Tariffville(Capitol County)
- Terramuggus(Capitol County)
- Taylor Corners(Western Connecticut County)
- Topstone(Western Connecticut County)
W
- Waterbury(Naugatuck Valley County)
- West Haven(South Central Connecticut County)
- Wallingford Center(South Central Connecticut County)
- Willimantic(Southeastern Connecticut County)
- Winsted(Northwest Hills County)
- Westport Village(Western Connecticut County)
- West Simsbury(Capitol County)
- Weatogue(Capitol County)
- Westbrook Center(Lower Connecticut River Valley County)
- Wilton Center(Western Connecticut County)
- Woodmont(South Central Connecticut County)
- Woodbury Center(Naugatuck Valley County)
- Wauregan(Northeastern Connecticut County)
- Weston(Western Connecticut County)
- West Mountain(Western Connecticut County)
- Witches Woods(Northeastern Connecticut County)
- West Cornwall(Northwest Hills County)