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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 | Emmitsburg | 60 |
| 2 | Thurmont | 54 |
| 3 | Middletown | 41 |
| 4 | Frostburg | 38 |
| 5 | Brunswick | 37 |
| 6 | Keedysville | 35 |
| 7 | Hagerstown | 33 |
| 8 | Frederick | 32 |
| 9 | Urbana | 29 |
| 10 | Ballenger Creek | 25 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
186 Contributors
See all
LIVE AQI CITY RANKING
Real-time Maryland
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Beltsville | 0 |
| 2 | Gaithersburg | 0 |
| 3 | Towson | 0 |
| 4 | Glenn Dale | 1 |
| 5 | Columbia | 2 |
| 6 | Parole | 3 |
| 7 | Brandywine | 4 |
| 8 | Hyattsville | 4 |
| 9 | Centreville | 7 |
| 10 | La Plata | 7 |
(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
186Contributors
- 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
176 Anonymous contributors176 stations
176 Anonymous Contributors
Which is the most polluted city in Maryland?
- Emmitsburg 60
- Thurmont 54
- Lonaconing 44
- Mountain Lake Park 44
- Oakland 44
- Westernport 44
- Bowling Green 43
- Cresaptown 43
- Cumberland 43
- La Vale 43
- Potomac Park 43
- Hancock 41
- Middletown 41
- Frostburg 38
- Brunswick 37
- Williamsport 36
- Wilson-Conococheague 36
- Boonsboro 35
- Fountainhead-Orchard Hills 35
- Halfway 35
- Jefferson 35
- Keedysville 35
- Maugansville 35
- Paramount-Long Meadow 35
- Point of Rocks 35
- Robinwood 35
- Saint James 35
- Adamstown 34
- Braddock Heights 34
- Cavetown 34
- Highfield-Cascade 34
- Myersville 34
- Poolesville 34
- Smithsburg 34
- Buckeystown 33
- Clover Hill 33
- Hagerstown 33
- Walkersville 33
- Bartonsville 32
- Darnestown 32
- Frederick 32
- Germantown 32
- Green Valley 32
- Indian Head 32
- Linganore 32
- Spring Ridge 32
- Taneytown 32
- Travilah 32
- Woodsboro 32
- Cabin John 31
- Montgomery Village 31
- New Windsor 31
- Potomac Heights 31
- Redland 31
- Brookmont 30
- Garrett Park 30
- Somerset 30
- Aspen Hill 29
- Chevy Chase Village 29
- Eldersburg 29
- Forest Glen 29
- Friendship Village 29
- Hampstead 29
- Highland 29
- Layhill 29
- Leisure World 29
- Manchester 29
- North Kensington 29
- Olney 29
- Rossmoor 29
- South Kensington 29
- Sykesville 29
- Urbana 29
- Ashton-Sandy Spring 28
- Bryans Road 28
- Burtonsville 28
- Calverton 28
- Cloverly 28
- Ellicott City 28
- Fairland 28
- Four Corners 28
- Fulton 28
- Garrison 28
- Glenmont 28
- Hillandale 28
- Hunt Valley 28
- Ilchester 28
- Kemp Mill 28
- Laurel 28
- Lochearn 28
- Lutherville 28
- Lutherville-Timonium 28
- Mays Chapel 28
- Prince Frederick 28
- Randallstown 28
- Scaggsville 28
- Spencerville 28
- Timonium 28
- White Oak 28
- Woodlawn 28
- Adelphi 27
- Arbutus 27
- Baltimore Highlands 27
- Berwyn Heights 27
- Bladensburg 27
- Brentwood 27
- Carney 27
- Chillum 27
- Churchville 27
- Cottage City 27
- East Riverdale 27
- Edmonston 27
- Elkridge 27
- Fort George G Mead Junction 27
- Fort Meade 27
- Fort Washington 27
- Glassmanor 27
- Goddard 27
- Hampton 27
- Hillcrest Heights 27
- Jarrettsville 27
- Jessup 27
- Landover Hills 27
- Langley Park 27
- Lansdowne 27
- Linthicum 27
- Marlow Heights 27
- Maryland City 27
- Mount Rainier 27
- National Harbor 27
- New Carrollton 27
- Pumphrey 27
- South Laurel 27
- West Elkridge 27
- Accokeek 26
- Bel Air 26
- Bel Air North 26
- Brooklyn Park 26
- Coral Hills 26
- Fallston 26
- Ferndale 26
- Friendly 26
- Glenarden 26
- Kingsville 26
- Lanham 26
- Lanham-Seabrook 26
- North Bel Air 26
- Odenton 26
- Oxon Hill-Glassmanor 26
- Peppermill Village 26
- Perry Hall 26
- Pleasant Hills 26
- Rosedale 26
- Seabrook 26
- Silver Hill 26
- South Bel Air 26
- Springdale 26
- Suitland 26
- Suitland-Silver Hill 26
- Temple Hills 26
- Ballenger Creek 25
- Bel Air South 25
- Bennsville 25
- District Heights 25
- Fairwood 25
- Forestville 25
- Joppatowne 25
- Lake Arbor 25
- Morningside 25
- Overlea 25
- Rising Sun 25
- Rossville 25
- South Gate 25
- Summerfield 25
- Walker Mill 25
- White Marsh 25
- Andrews AFB 24
- Camp Springs 24
- Crofton 24
- Gambrills 24
- Kettering 24
- Middle River 24
- West Laurel 24
- Woodmore 24
- Aberdeen 23
- Arden on the Severn 23
- Bowie 23
- Bowleys Quarters 23
- Brock Hall 23
- Colmar Manor 23
- Croom 23
- Crownsville 23
- Davidsonville 23
- Edgemere 23
- Greater Upper Marlboro 23
- Hanover 23
- Havre de Grace 23
- Herald Harbor 23
- Marlboro Village 23
- Marlton 23
- Mellwood 23
- Millington 23
- Mitchellville 23
- Pasadena 23
- Perryman 23
- Perryville 23
- Queenland 23
- Riva 23
- Riverside 23
- Riviera Beach 23
- Rosaryville 23
- Saint Charles 23
- Severna Park 23
- St. Charles 23
- Waldorf 23
- Westphalia 23
- Aberdeen Proving Ground 22
- Arnold 22
- Baden 22
- Charlestown 22
- Edgewater 22
- Elkton 22
- Lake Shore 22
- Londontowne 22
- North East 22
- University Park 22
- Cape Saint Claire 21
- Dunkirk 21
- Dunkirk Town Center 21
- Hillsmere Shores 21
- Mayo 21
- Naval Academy 21
- North Potomac 21
- Seat Pleasant 21
- Selby-on-the-Bay 21
- Silver Spring 21
- Cobb Island 20
- Deale 20
- Forest Heights 20
- Huntingtown 20
- Huntingtown Town Center 20
- Owings 20
- Pikesville 20
- Princess Anne 20
- Shady Side 20
- Charlotte Hall 19
- Fairmount Heights 19
- Golden Beach 19
- Landover 19
- North Beach 19
- North Laurel 19
- Rock Hall 19
- Stevensville 19
- Upper Marlboro 19
- Clinton 18
- Pocomoke City 18
- Potomac 18
- Saint Mary 18
- Wheaton 18
- California 17
- Chestertown 17
- Chevy Chase 17
- Grasonville 17
- Severn 17
- Capitol Heights 16
- Clarksburg 16
- Hughesville 16
- Kingstown 16
- Long Beach 16
- Saint Michaels 16
- Cheverly 15
- Derwood 15
- Glen Burnie 15
- Lusby 15
- Mount Airy 15
- Oxon Hill 15
- Reisterstown 15
- Takoma Park 15
- Baltimore 14
- Catonsville 14
- Chesapeake Ranch Estates 14
- College Park 14
- Kensington 14
- Largo 14
- Mechanicsville 14
- Solomons 14
- Algonquin 13
- Bethesda 13
- Cockeysville 13
- Damascus 13
- Drum Point 13
- Dundalk 13
- Greenbelt 13
- Greensboro 13
- Leonardtown 13
- Lexington Park 13
- Marlboro Meadows 13
- Milford Mill 13
- Owings Mills 13
- Ridgely 13
- Trappe 13
- Cambridge 12
- Federalsburg 12
- Hurlock 12
- North Bethesda 12
- Queen Anne 12
- Annapolis 11
- Crisfield 11
- Denton 11
- Easton 11
- Lothian 11
- Chesapeake Beach 10
- Essex 10
- Fruitland 10
- Green Haven 10
- Hebron 10
- Parkville 10
- Riverdale Park 10
- Salisbury 10
- Colesville 9
- Rockville 9
- Savage 9
- Westminster 9
- Chester 8
- Edgewood 8
- Centreville 7
- La Plata 7
- Pittsville 7
- Snow Hill 7
- Berlin 5
- Brandywine 4
- Hyattsville 4
- Ocean City 4
- Ocean Pines 4
- West Ocean City 4
- Parole 3
- Columbia 2
- Glenn Dale 1
- Beltsville 0
- Gaithersburg 0
- Towson 0
AQI US, Metric