Maryland Air Quality
Real-time AQI data and air quality trends for 532 cities across Maryland.
Statewide Air Quality Overview
40
Average AQI
3479
Good Air Days
707
Moderate Days
Unhealthy Days
143
Highest AQI
Based on 2025 EPA data
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 Maryland.
National Rankings
Compare Maryland cities to the rest of the US by air quality grade and median AQI.
All Cities in Maryland
A
- Aspen Hill(Montgomery County)
- Annapolis(Anne Arundel County)
- Arnold(Anne Arundel County)
- Arbutus(Baltimore County)
- Adelphi(Prince George's County)
- Aberdeen(Harford County)
- Accokeek(Prince George's County)
- Annapolis Neck(Anne Arundel County)
- Ashton-Sandy Spring(Montgomery County)
- Abingdon(Harford County)
- Andrews AFB(Prince George's County)
- Aberdeen Proving Ground(Harford County)
- Adamstown(Frederick County)
- Arden on the Severn(Anne Arundel County)
- Algonquin(Dorchester County)
- Aquasco(Prince George's County)
- Accident(Garrett County)
- Allen(Wicomico County)
- Antietam(Washington County)
B
- Baltimore(Baltimore County)
- Bethesda(Montgomery County)
- Bel Air South(Harford County)
- Bowie(Prince George's County)
- Bel Air North(Harford County)
- Ballenger Creek(Frederick County)
- Beltsville(Prince George's County)
- Brooklyn Park(Anne Arundel County)
- Bensville(Charles County)
- Brock Hall(Prince George's County)
- Brandywine(Prince George's County)
- Bel Air(Harford County)
- Burtonsville(Montgomery County)
- Bladensburg(Prince George's County)
- Bryans Road(Charles County)
- Brunswick(Frederick County)
- Baltimore Highlands(Baltimore County)
- Bowleys Quarters(Baltimore County)
- Berlin(Worcester County)
- Boonsboro(Washington County)
- Brentwood(Prince George's County)
- Burnt Mills(Montgomery County)
- Brookmont(Montgomery County)
- Brown Station(Prince George's County)
- Berwyn Heights(Prince George's County)
- Bartonsville(Frederick County)
- Braddock Heights(Frederick County)
- Baden(Prince George's County)
- Buckeystown(Frederick County)
- Bowmans Addition(Allegany County)
- Bowling Green(Allegany County)
- Barton(Allegany County)
- Bishopville(Worcester County)
- Butlertown(Kent County)
- Broomes Island(Calvert County)
- Beaver Creek(Washington County)
- Betterton(Kent County)
- Bryantown(Charles County)
- Bagtown(Washington County)
- Barclay(Queen Anne's County)
- Barnesville(Montgomery County)
- Bivalve(Wicomico County)
- Brookeville(Montgomery County)
- Bloomington(Garrett County)
- Benedict(Charles County)
- Breathedsville(Washington County)
- Burkittsville(Frederick County)
- Bier(Allegany County)
- Barrelville(Allegany County)
- Big Pool(Washington County)
- Brookview(Dorchester County)
- Big Spring(Washington County)
- Brownsville(Washington County)
- Bakersville(Washington County)
C
- Columbia(Howard County)
- Catonsville(Baltimore County)
- Clinton(Prince George's County)
- Chillum(Prince George's County)
- College Park(Prince George's County)
- Clarksburg(Montgomery County)
- Crofton(Anne Arundel County)
- Carney(Baltimore County)
- Cockeysville(Baltimore County)
- Camp Springs(Prince George's County)
- Cumberland(Allegany County)
- Calverton(Montgomery County)
- Cloverly(Montgomery County)
- Colesville(Montgomery County)
- Cambridge(Dorchester County)
- California(St. Mary's County)
- Coral Hills(Prince George's County)
- Chevy Chase(Montgomery County)
- Chesapeake Ranch Estates(Calvert County)
- Cape St. Claire(Anne Arundel County)
- Chesapeake Beach(Calvert County)
- Cheverly(Prince George's County)
- Chestertown(Kent County)
- Cresaptown(Allegany County)
- Chester(Queen Anne's County)
- Centreville(Queen Anne's County)
- Capitol Heights(Prince George's County)
- Crisfield(Somerset County)
- Croom(Prince George's County)
- Cedar Heights(Prince George's County)
- Cabin John(Montgomery County)
- Charlestown(Cecil County)
- Chevy Chase Village(Montgomery County)
- Crownsville(Anne Arundel County)
- Colmar Manor(Prince George's County)
- Charlotte Hall(St. Mary's County)
- Cottage City(Prince George's County)
- Calvert Beach(Calvert County)
- Chevy Chase View(Montgomery County)
- Church Hill(Queen Anne's County)
- Callaway(St. Mary's County)
- Cobb Island(Charles County)
- Chevy Chase Section Three(Montgomery County)
- Cavetown(Washington County)
- Cecilton(Cecil County)
- Chesapeake City(Cecil County)
- Chevy Chase Section Five(Montgomery County)
- Cedarville(Prince George's County)
- Corriganville(Allegany County)
- Chesapeake Landing(Kent County)
- Cordova(Talbot County)
- Clear Spring(Washington County)
- Chewsville(Washington County)
- Crumpton(Queen Anne's County)
- Chance(Somerset County)
- Choptank(Caroline County)
- Crellin(Garrett County)
- Church Creek(Dorchester County)
- Cearfoss(Washington County)
- Carlos(Allegany County)
- Clarysville(Allegany County)
- Charlton(Washington County)
D
- Dundalk(Baltimore County)
- Damascus(Montgomery County)
- Darnestown(Montgomery County)
- District Heights(Prince George's County)
- Deale(Anne Arundel County)
- Denton(Caroline County)
- Delmar(Wicomico County)
- Drum Point(Calvert County)
- Dunkirk(Calvert County)
- Derwood(Montgomery County)
- Downsville(Washington County)
- Darlington(Harford County)
- Deal Island(Somerset County)
- Danville(Allegany County)
- Deer Park(Garrett County)
- Dames Quarter(Somerset County)
- Dawson(Allegany County)
- Dargan(Washington County)
- Detmold(Allegany County)
E
- Ellicott City(Howard County)
- Essex(Baltimore County)
- Eldersburg(Carroll County)
- Elkridge(Howard County)
- Edgewood(Harford County)
- East Riverdale(Prince George's County)
- Easton(Talbot County)
- Elkton(Cecil County)
- Edgemere(Baltimore County)
- Edgewater(Anne Arundel County)
- Emmitsburg(Frederick County)
- Edmonston(Prince George's County)
- Eden(Somerset County)
- Eckhart Mines(Allegany County)
- Ellerslie(Allegany County)
- East New Market(Dorchester County)
- Edgemont(Washington County)
- Eagle Harbor(Prince George's County)
- Edesville(Kent County)
- Eldorado(Dorchester County)
- Elliott(Dorchester County)
- Eakles Mill(Washington County)
- Ernstville(Washington County)
F
- Frederick(Frederick County)
- Fairland(Montgomery County)
- Fort Washington(Prince George's County)
- Ferndale(Anne Arundel County)
- Flower Hill(Montgomery County)
- Fort Meade(Anne Arundel County)
- Friendly(Prince George's County)
- Forestville(Prince George's County)
- Fallston(Harford County)
- Four Corners(Montgomery County)
- Fairwood(Prince George's County)
- Frostburg(Allegany County)
- Forest Glen(Montgomery County)
- Fountainhead-Orchard Hills(Washington County)
- Fruitland(Wicomico County)
- Fulton(Howard County)
- Friendship Heights Village(Montgomery County)
- Federalsburg(Caroline County)
- Forest Heights(Prince George's County)
- Fairmount Heights(Prince George's County)
- Funkstown(Washington County)
- Finzel(Garrett County)
- Fairplay(Washington County)
- Fairmount(Somerset County)
- Friendsville(Garrett County)
- Franklin(Allegany County)
- Fairlee(Kent County)
- Friendship(Anne Arundel County)
- Fishing Creek(Dorchester County)
- Frenchtown-Rumbly(Somerset County)
- Flintstone(Allegany County)
- Fort Ritchie(Washington County)
- Fairview(Washington County)
G
- Germantown(Montgomery County)
- Glen Burnie(Anne Arundel County)
- Gaithersburg(Montgomery County)
- Greenbelt(Prince George's County)
- Glenmont(Montgomery County)
- Glassmanor(Prince George's County)
- Glenn Dale(Prince George's County)
- Green Valley(Frederick County)
- Garrison(Baltimore County)
- Glenarden(Prince George's County)
- Golden Beach(St. Mary's County)
- Grasonville(Queen Anne's County)
- Gambrills(Anne Arundel County)
- Greensboro(Caroline County)
- Galesville(Anne Arundel County)
- Grantsville(Garrett County)
- Garrett Park(Montgomery County)
- Galena(Kent County)
- Grahamtown(Allegany County)
- Greensburg(Washington County)
- Gilmore(Allegany County)
- Glen Echo(Montgomery County)
- Goldsboro(Caroline County)
- Garretts Mill(Washington County)
- Graceham(Frederick County)
- Galestown(Dorchester County)
- Gorman(Garrett County)
- Girdletree(Worcester County)
- Gapland(Washington County)
- Georgetown(Kent County)
H
- Hagerstown(Washington County)
- Hyattsville(Prince George's County)
- Hillcrest Heights(Prince George's County)
- Havre de Grace(Harford County)
- Honeygo(Baltimore County)
- Halfway(Washington County)
- Hampstead(Carroll County)
- Hampton(Baltimore County)
- Hillandale(Montgomery County)
- Hurlock(Dorchester County)
- Huntingtown(Calvert County)
- Herald Harbor(Anne Arundel County)
- Hughesville(Charles County)
- Hancock(Washington County)
- Hebron(Wicomico County)
- Highfield-Cascade(Washington County)
- Highland(Howard County)
- Hutton(Garrett County)
- Henderson(Caroline County)
- Hillsboro(Caroline County)
- Highland Beach(Anne Arundel County)
J
K
- Kettering(Prince George's County)
- Kemp Mill(Montgomery County)
- Kingsville(Baltimore County)
- Konterra(Prince George's County)
- Kensington(Montgomery County)
- Kingstown(Queen Anne's County)
- Keedysville(Washington County)
- Kent Narrows(Queen Anne's County)
- Kitzmiller(Garrett County)
- Kennedyville(Kent County)
- Klondike(Allegany County)
- Kemps Mill(Washington County)
L
- Laurel(Prince George's County)
- Lochearn(Baltimore County)
- Landover(Prince George's County)
- Langley Park(Prince George's County)
- Lake Shore(Anne Arundel County)
- Linganore(Frederick County)
- Lake Arbor(Prince George's County)
- Lexington Park(St. Mary's County)
- Largo(Prince George's County)
- Lanham(Prince George's County)
- Linthicum(Anne Arundel County)
- La Plata(Charles County)
- Leisure World(Montgomery County)
- Lansdowne(Baltimore County)
- Lutherville(Baltimore County)
- Layhill(Montgomery County)
- Leonardtown(St. Mary's County)
- La Vale(Allegany County)
- Lusby(Calvert County)
- Landover Hills(Prince George's County)
- Long Beach(Calvert County)
- Libertytown(Frederick County)
- Lonaconing(Allegany County)
- Laytonsville(Montgomery County)
- Leitersburg(Washington County)
- Loch Lynn Heights(Garrett County)
- Lewistown(Frederick County)
- Lisbon(Howard County)
- Luke(Allegany County)
- Little Orleans(Allegany County)
M
- Montgomery Village(Montgomery County)
- Middle River(Baltimore County)
- Milford Mill(Baltimore County)
- Maryland City(Anne Arundel County)
- Mays Chapel(Baltimore County)
- Mitchellville(Prince George's County)
- Marlton(Prince George's County)
- Mount Airy(Carroll County)
- Marlboro Village(Prince George's County)
- Mayo(Anne Arundel County)
- Mount Rainier(Prince George's County)
- Marlow Heights(Prince George's County)
- Manchester(Carroll County)
- Middletown(Frederick County)
- Marlboro Meadows(Prince George's County)
- Maugansville(Washington County)
- Monrovia(Frederick County)
- Melwood(Prince George's County)
- Myersville(Frederick County)
- Mountain Lake Park(Garrett County)
- Mechanicsville(St. Mary's County)
- Mount Vernon(Somerset County)
- Martin's Additions(Montgomery County)
- Morningside(Prince George's County)
- Maryland Park(Prince George's County)
- Mount Aetna(Washington County)
- Midland(Allegany County)
- Mount Savage(Allegany County)
- Mardela Springs(Wicomico County)
- Millington(Kent County)
- Mount Lena(Washington County)
- Midlothian(Allegany County)
- McCoole(Allegany County)
- Mapleville(Washington County)
- Mercersville(Washington County)
- Mount Briar(Washington County)
- Moscow(Allegany County)
- Marydel(Caroline County)
- Madison(Dorchester County)
- Middleburg(Washington County)
N
- North Bethesda(Montgomery County)
- North Laurel(Howard County)
- North Potomac(Montgomery County)
- New Carrollton(Prince George's County)
- North Kensington(Montgomery County)
- National Harbor(Prince George's County)
- North East(Cecil County)
- Naval Academy(Anne Arundel County)
- North Beach(Calvert County)
- New Market(Frederick County)
- New Windsor(Carroll County)
- North Chevy Chase(Montgomery County)
- North Brentwood(Prince George's County)
- Nanticoke(Wicomico County)
- Newark(Worcester County)
- Nikep(Allegany County)
- Nanticoke Acres(Wicomico County)
- National(Allegany County)
O
- Odenton(Anne Arundel County)
- Owings Mills(Baltimore County)
- Olney(Montgomery County)
- Oxon Hill(Prince George's County)
- Overlea(Baltimore County)
- Ocean Pines(Worcester County)
- Ocean City(Worcester County)
- Owings(Calvert County)
- Oakland(Garrett County)
- Oxford(Talbot County)
- Oldtown(Allegany County)
- Ocean(Allegany County)
P
- Potomac(Montgomery County)
- Pasadena(Anne Arundel County)
- Pikesville(Baltimore County)
- Parkville(Baltimore County)
- Perry Hall(Baltimore County)
- Parole(Anne Arundel County)
- Poolesville(Montgomery County)
- Peppermill Village(Prince George's County)
- Perryville(Cecil County)
- Pocomoke City(Worcester County)
- Pleasant Hills(Harford County)
- Princess Anne(Somerset County)
- Prince Frederick(Calvert County)
- Paramount-Long Meadow(Washington County)
- Point of Rocks(Frederick County)
- Perryman(Harford County)
- Pittsville(Wicomico County)
- Potomac Heights(Charles County)
- Piney Point(St. Mary's County)
- Potomac Park(Allegany County)
- Pylesville(Harford County)
- Preston(Caroline County)
- Pomfret(Charles County)
- Port Deposit(Cecil County)
- Pinesburg(Washington County)
- Pleasant Grove(Allegany County)
- Powellville(Wicomico County)
- Pecktonville(Washington County)
- Parsonsburg(Wicomico County)
- Pondsville(Washington County)
- Port Tobacco Village(Charles County)
Q
R
- Rockville(Montgomery County)
- Randallstown(Baltimore County)
- Reisterstown(Baltimore County)
- Rosedale(Baltimore County)
- Redland(Montgomery County)
- Rossville(Baltimore County)
- Rosaryville(Prince George's County)
- Riviera Beach(Anne Arundel County)
- Robinwood(Washington County)
- Riverdale Park(Prince George's County)
- Riverside(Harford County)
- Riva(Anne Arundel County)
- Rising Sun(Cecil County)
- Romancoke(Queen Anne's County)
- Ridgely(Caroline County)
- Rock Hall(Kent County)
- Rawlings(Allegany County)
- Rosemont(Frederick County)
- Rock Point(Charles County)
- Ringgold(Washington County)
- Rohrersville(Washington County)
- Reid(Washington County)
S
- Silver Spring(Montgomery County)
- Salisbury(Wicomico County)
- Severn(Anne Arundel County)
- Severna Park(Anne Arundel County)
- South Laurel(Prince George's County)
- Suitland(Prince George's County)
- Seabrook(Prince George's County)
- Summerfield(Prince George's County)
- Scaggsville(Howard County)
- Stevensville(Queen Anne's County)
- Savage(Howard County)
- South Kensington(Montgomery County)
- Spring Ridge(Frederick County)
- Springdale(Prince George's County)
- Silver Hill(Prince George's County)
- St. James(Washington County)
- Shady Side(Anne Arundel County)
- Sykesville(Carroll County)
- Seat Pleasant(Prince George's County)
- Smithsburg(Washington County)
- Snow Hill(Worcester County)
- Solomons(Calvert County)
- St. Michaels(Talbot County)
- Somerset(Montgomery County)
- Spencerville(Montgomery County)
- Sharptown(Wicomico County)
- St. Leonard(Calvert County)
- Secretary(Dorchester County)
- Sharpsburg(Washington County)
- Sabillasville(Frederick County)
- Sudlersville(Queen Anne's County)
- Smith Island(Somerset County)
- San Mar(Washington County)
- Shaft(Allegany County)
- St. George Island(St. Mary's County)
- Sandy Hook(Washington County)
- Stockton(Worcester County)
- Still Pond(Kent County)
- Spring Gap(Allegany County)
- Swanton(Garrett County)
T
- Towson(Baltimore County)
- Takoma Park(Montgomery County)
- Travilah(Montgomery County)
- Timonium(Baltimore County)
- Temple Hills(Prince George's County)
- Taneytown(Carroll County)
- Thurmont(Frederick County)
- Ten Mile Creek(Montgomery County)
- Trappe(Talbot County)
- Tilghman Island(Talbot County)
- Tall Timbers(St. Mary's County)
- Tolchester(Kent County)
- Tilghmanton(Washington County)
- Trego-Rohrersville Station(Washington County)
- Tyaskin(Wicomico County)
- Taylors Island(Dorchester County)
- Templeville(Caroline County)
U
W
- Waldorf(Charles County)
- Wheaton(Montgomery County)
- Woodlawn(Baltimore County)
- Westminster(Carroll County)
- White Oak(Montgomery County)
- Westphalia(Prince George's County)
- White Marsh(Baltimore County)
- Walker Mill(Prince George's County)
- Wildewood(St. Mary's County)
- Walkersville(Frederick County)
- West Ocean City(Worcester County)
- Woodmore(Prince George's County)
- West Laurel(Prince George's County)
- Williamsport(Washington County)
- Wilson-Conococheague(Washington County)
- Westernport(Allegany County)
- Woodsboro(Frederick County)
- Willards(Wicomico County)
- Washington Grove(Montgomery County)
- West Pocomoke(Somerset County)
- Williston(Caroline County)
- Whaleyville(Worcester County)
- Worton(Kent County)
- Whitehaven(Wicomico County)
- West Denton(Caroline County)
- Woodland(Allegany County)
- Waterview(Wicomico County)