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Air quality in Maryland
Air quality index (AQI) and PM2.5 air pollution in Maryland
LIVE AQI CITY RANKING
Real-time Maryland
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Cambridge | 33 |
| 2 | Charlotte Hall | 31 |
| 3 | Thurmont | 29 |
| 4 | Ballenger Creek | 28 |
| 5 | Frederick | 28 |
| 6 | Keedysville | 27 |
| 7 | Pikesville | 27 |
| 8 | Catonsville | 26 |
| 9 | Cockeysville | 26 |
| 10 | North Potomac | 26 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
191 Contributors
See all
LIVE AQI CITY RANKING
Real-time Maryland
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Beltsville | 4 |
| 2 | Millington | 5 |
| 3 | Derwood | 8 |
| 4 | Gaithersburg | 9 |
| 5 | North Laurel | 10 |
| 6 | Overlea | 10 |
| 7 | Parole | 10 |
| 8 | Brandywine | 12 |
| 9 | Hyattsville | 12 |
| 10 | Bethesda | 13 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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The latest air quality news and resources.
Maryland air quality data attribution
191Contributors
- Maryland Department of the Environment
22 stations
- USA National Park Service
1 station
2 Government Contributors
Non-profit organization Contributor
- Ammar Rai
1 station
- Luis de Silva
1 station
- hillmead park
1 station
- TJ
1 station
- TFrey
1 station
- enilso
1 station
- harveytig
1 station
7 Individual Contributors
181 Anonymous contributors181 stations
181 Anonymous Contributors
Which is the most polluted city in Maryland?
- Churchville 35
- Cambridge 33
- Prince Frederick 33
- Sykesville 33
- Laurel 32
- Charlotte Hall 31
- Mountain Lake Park 31
- Oakland 31
- Thurmont 29
- Upper Marlboro 29
- Ballenger Creek 28
- Frederick 28
- Bowling Green 27
- Cresaptown 27
- Cumberland 27
- Keedysville 27
- La Vale 27
- Lonaconing 27
- Pikesville 27
- Potomac Park 27
- Westernport 27
- Catonsville 26
- Cockeysville 26
- North Potomac 26
- Baltimore 25
- Emmitsburg 25
- Fairmount Heights 25
- Glen Burnie 25
- Greenbelt 25
- Hancock 25
- Hanover 25
- Owings Mills 25
- Reisterstown 25
- Severn 25
- Silver Spring 25
- University Park 25
- Urbana 25
- Brunswick 24
- College Park 24
- Colmar Manor 24
- Crisfield 24
- Milford Mill 24
- Wheaton 24
- Forest Heights 23
- Green Haven 23
- Landover 23
- Parkville 23
- Capitol Heights 22
- Chevy Chase 22
- Chillum 22
- Clarksburg 22
- Elkton 22
- Kensington 22
- Potomac 22
- Seat Pleasant 22
- Snow Hill 22
- Takoma Park 22
- Williamsport 22
- Bel Air 21
- Bel Air North 21
- Boonsboro 21
- Chesapeake Beach 21
- Chestertown 21
- Cheverly 21
- Colesville 21
- Dundalk 21
- Fountainhead-Orchard Hills 21
- Halfway 21
- Jarrettsville 21
- Maugansville 21
- North Bel Air 21
- Oxon Hill 21
- Paramount-Long Meadow 21
- Pocomoke City 21
- Robinwood 21
- Saint James 21
- South Bel Air 21
- West Laurel 21
- Wilson-Conococheague 21
- Aberdeen 20
- Aberdeen Proving Ground 20
- Bel Air South 20
- Berlin 20
- Bowleys Quarters 20
- Braddock Heights 20
- Carney 20
- Cavetown 20
- Charlestown 20
- Clover Hill 20
- Cobb Island 20
- Essex 20
- Fallston 20
- Garrison 20
- Hampstead 20
- Hampton 20
- Havre de Grace 20
- Highfield-Cascade 20
- Hughesville 20
- Hunt Valley 20
- Jefferson 20
- Joppatowne 20
- Kingsville 20
- Lansdowne 20
- Largo 20
- Lochearn 20
- Lothian 20
- Lutherville 20
- Lutherville-Timonium 20
- Manchester 20
- Marlboro Meadows 20
- Mays Chapel 20
- Middle River 20
- Myersville 20
- New Windsor 20
- North Bethesda 20
- North East 20
- Perry Hall 20
- Perryman 20
- Perryville 20
- Pleasant Hills 20
- Queen Anne 20
- Rising Sun 20
- Riverside 20
- Rockville 20
- Rosedale 20
- Rossville 20
- Savage 20
- Smithsburg 20
- Taneytown 20
- Timonium 20
- Walkersville 20
- White Marsh 20
- Woodlawn 20
- Woodsboro 20
- Accokeek 19
- Adamstown 19
- Adelphi 19
- Andrews AFB 19
- Annapolis 19
- Arbutus 19
- Arden on the Severn 19
- Arnold 19
- Ashton-Sandy Spring 19
- Aspen Hill 19
- Baltimore Highlands 19
- Bartonsville 19
- Bennsville 19
- Berwyn Heights 19
- Bladensburg 19
- Bowie 19
- Brentwood 19
- Brooklyn Park 19
- Brookmont 19
- Bryans Road 19
- Buckeystown 19
- Burtonsville 19
- Cabin John 19
- California 19
- Calverton 19
- Camp Springs 19
- Chevy Chase Village 19
- Clinton 19
- Cloverly 19
- Coral Hills 19
- Cottage City 19
- Crofton 19
- Crownsville 19
- Darnestown 19
- District Heights 19
- East Riverdale 19
- Easton 19
- Edgemere 19
- Edmonston 19
- Eldersburg 19
- Elkridge 19
- Ellicott City 19
- Fairland 19
- Fairwood 19
- Ferndale 19
- Forest Glen 19
- Forestville 19
- Fort George G Mead Junction 19
- Fort Meade 19
- Fort Washington 19
- Four Corners 19
- Friendly 19
- Friendship Village 19
- Fulton 19
- Gambrills 19
- Garrett Park 19
- Germantown 19
- Glassmanor 19
- Glenarden 19
- Glenmont 19
- Goddard 19
- Green Valley 19
- Herald Harbor 19
- Highland 19
- Hillandale 19
- Hillcrest Heights 19
- Ilchester 19
- Indian Head 19
- Jessup 19
- Kemp Mill 19
- Kettering 19
- Lake Arbor 19
- Lake Shore 19
- Landover Hills 19
- Langley Park 19
- Lanham 19
- Lanham-Seabrook 19
- Layhill 19
- Leisure World 19
- Linganore 19
- Linthicum 19
- Marlow Heights 19
- Maryland City 19
- Mitchellville 19
- Montgomery Village 19
- Morningside 19
- Mount Rainier 19
- National Harbor 19
- New Carrollton 19
- North Kensington 19
- Odenton 19
- Olney 19
- Oxon Hill-Glassmanor 19
- Pasadena 19
- Peppermill Village 19
- Point of Rocks 19
- Poolesville 19
- Potomac Heights 19
- Princess Anne 19
- Pumphrey 19
- Randallstown 19
- Redland 19
- Riviera Beach 19
- Rossmoor 19
- Saint Mary 19
- Scaggsville 19
- Seabrook 19
- Severna Park 19
- Silver Hill 19
- Somerset 19
- South Gate 19
- South Kensington 19
- South Laurel 19
- Spencerville 19
- Spring Ridge 19
- Springdale 19
- Suitland 19
- Suitland-Silver Hill 19
- Summerfield 19
- Temple Hills 19
- Towson 19
- Travilah 19
- Walker Mill 19
- West Elkridge 19
- White Oak 19
- Woodmore 19
- Baden 18
- Brock Hall 18
- Cape Saint Claire 18
- Chesapeake Ranch Estates 18
- Croom 18
- Davidsonville 18
- Drum Point 18
- Dunkirk 18
- Dunkirk Town Center 18
- Edgewater 18
- Golden Beach 18
- Greater Upper Marlboro 18
- Hagerstown 18
- Hillsmere Shores 18
- Huntingtown 18
- Huntingtown Town Center 18
- Londontowne 18
- Marlboro Village 18
- Marlton 18
- Mechanicsville 18
- Mellwood 18
- Naval Academy 18
- Queenland 18
- Riva 18
- Rock Hall 18
- Rosaryville 18
- Saint Charles 18
- Selby-on-the-Bay 18
- Solomons 18
- St. Charles 18
- Waldorf 18
- Westphalia 18
- Deale 17
- Grasonville 17
- Kingstown 17
- La Plata 17
- Long Beach 17
- Mayo 17
- North Beach 17
- Ocean City 17
- Owings 17
- Riverdale Park 17
- Saint Michaels 17
- Shady Side 17
- Stevensville 17
- Algonquin 16
- Damascus 16
- Frostburg 16
- Greensboro 16
- Mount Airy 16
- Ridgely 16
- Trappe 16
- West Ocean City 16
- Westminster 16
- Chester 15
- Denton 15
- Federalsburg 15
- Hurlock 15
- Leonardtown 15
- Lusby 15
- Columbia 14
- Edgewood 14
- Fruitland 14
- Glenn Dale 14
- Hebron 14
- Lexington Park 14
- Ocean Pines 14
- Salisbury 14
- Bethesda 13
- Centreville 13
- Pittsville 13
- Brandywine 12
- Hyattsville 12
- North Laurel 10
- Overlea 10
- Parole 10
- Gaithersburg 9
- Derwood 8
- Millington 5
- Beltsville 4
AQI US, Metric