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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 | Frostburg | 48 |
| 2 | Charlotte Hall | 45 |
| 3 | Cambridge | 43 |
| 4 | Essex | 33 |
| 5 | Green Haven | 31 |
| 6 | Owings Mills | 30 |
| 7 | Pikesville | 29 |
| 8 | Urbana | 29 |
| 9 | Ballenger Creek | 28 |
| 10 | Cockeysville | 28 |
(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 | 3 |
| 2 | Derwood | 11 |
| 3 | Hagerstown | 12 |
| 4 | Hanover | 12 |
| 5 | West Laurel | 12 |
| 6 | Bethesda | 13 |
| 7 | Gaithersburg | 13 |
| 8 | Parole | 14 |
| 9 | Brandywine | 16 |
| 10 | Centreville | 16 |
(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?
- Sykesville 52
- Frostburg 48
- Upper Marlboro 46
- Charlotte Hall 45
- Chillum 45
- Churchville 45
- Prince Frederick 45
- Cambridge 43
- Laurel 43
- Essex 33
- Green Haven 31
- Owings Mills 30
- Pikesville 29
- Urbana 29
- Ballenger Creek 28
- Cockeysville 28
- Queen Anne 28
- Wheaton 28
- Charlestown 27
- Clarksburg 27
- Colesville 27
- College Park 27
- Colmar Manor 27
- Elkton 27
- Perryville 27
- Rising Sun 27
- Thurmont 27
- Aberdeen 26
- Aberdeen Proving Ground 26
- Bel Air 26
- Bel Air North 26
- Bel Air South 26
- Catonsville 26
- Emmitsburg 26
- Fallston 26
- Forest Heights 26
- Frederick 26
- Greenbelt 26
- Havre de Grace 26
- Jarrettsville 26
- Joppatowne 26
- Kingsville 26
- Largo 26
- Marlboro Meadows 26
- Middletown 26
- Milford Mill 26
- Mount Airy 26
- North Bel Air 26
- North East 26
- North Laurel 26
- North Potomac 26
- Overlea 26
- Perryman 26
- Pleasant Hills 26
- Riverside 26
- Silver Spring 26
- South Bel Air 26
- University Park 26
- Baltimore 25
- Bowleys Quarters 25
- Brunswick 25
- Capitol Heights 25
- Carney 25
- Chesapeake Beach 25
- Cheverly 25
- Chevy Chase 25
- Edgemere 25
- Hampton 25
- Hughesville 25
- Hunt Valley 25
- Keedysville 25
- Kensington 25
- Kingstown 25
- Landover 25
- Lansdowne 25
- Lutherville 25
- Lutherville-Timonium 25
- Mays Chapel 25
- Mechanicsville 25
- Middle River 25
- Perry Hall 25
- Reisterstown 25
- Rock Hall 25
- Rosedale 25
- Rossville 25
- Saint Mary 25
- Seat Pleasant 25
- Timonium 25
- White Marsh 25
- Baltimore Highlands 24
- Brooklyn Park 24
- California 24
- Denton 24
- Dundalk 24
- Garrison 24
- Glen Burnie 24
- Lake Shore 24
- Lochearn 24
- Lothian 24
- Lusby 24
- North Bethesda 24
- Oxon Hill 24
- Parkville 24
- Potomac 24
- Pumphrey 24
- Riviera Beach 24
- Savage 24
- Towson 24
- Woodlawn 24
- Arbutus 23
- Arnold 23
- Cape Saint Claire 23
- Chestertown 23
- Easton 23
- Elkridge 23
- Ferndale 23
- Hampstead 23
- Herald Harbor 23
- Ilchester 23
- Lexington Park 23
- Linthicum 23
- Manchester 23
- Pasadena 23
- Randallstown 23
- Severna Park 23
- South Gate 23
- Takoma Park 23
- West Elkridge 23
- Arden on the Severn 22
- Crownsville 22
- Ellicott City 22
- Fairmount Heights 22
- Gambrills 22
- Grasonville 22
- La Plata 22
- Leonardtown 22
- Naval Academy 22
- Odenton 22
- Riverdale Park 22
- Rockville 22
- Severn 22
- Stevensville 22
- Crofton 21
- Damascus 21
- Edgewater 21
- Eldersburg 21
- Fort George G Mead Junction 21
- Fort Meade 21
- Hillsmere Shores 21
- Jessup 21
- Londontowne 21
- New Windsor 21
- Riva 21
- Selby-on-the-Bay 21
- Chesapeake Ranch Estates 20
- Chester 20
- Clinton 20
- Columbia 20
- Davidsonville 20
- Drum Point 20
- Glenn Dale 20
- Greensboro 20
- Maryland City 20
- Mayo 20
- Ridgely 20
- Shady Side 20
- Solomons 20
- Taneytown 20
- Algonquin 19
- Annapolis 19
- Bowie 19
- Brock Hall 19
- Burtonsville 19
- Cobb Island 19
- Crisfield 19
- Deale 19
- Edgewood 19
- Fairwood 19
- Fulton 19
- Greater Upper Marlboro 19
- Highland 19
- Linganore 19
- Long Beach 19
- Mitchellville 19
- North Beach 19
- Owings 19
- Saint Michaels 19
- Scaggsville 19
- South Laurel 19
- Trappe 19
- Westminster 19
- Woodsboro 19
- Adelphi 18
- Andrews AFB 18
- Ashton-Sandy Spring 18
- Aspen Hill 18
- Baden 18
- Berwyn Heights 18
- Bladensburg 18
- Brentwood 18
- Calverton 18
- Camp Springs 18
- Cloverly 18
- Coral Hills 18
- Cottage City 18
- Croom 18
- District Heights 18
- Dunkirk 18
- Dunkirk Town Center 18
- East Riverdale 18
- Edmonston 18
- Fairland 18
- Federalsburg 18
- Forest Glen 18
- Forestville 18
- Four Corners 18
- Garrett Park 18
- Glenarden 18
- Glenmont 18
- Goddard 18
- Golden Beach 18
- Highfield-Cascade 18
- Hillandale 18
- Hillcrest Heights 18
- Huntingtown 18
- Huntingtown Town Center 18
- Hurlock 18
- Kemp Mill 18
- Kettering 18
- Lake Arbor 18
- Landover Hills 18
- Langley Park 18
- Lanham 18
- Lanham-Seabrook 18
- Layhill 18
- Leisure World 18
- Marlboro Village 18
- Marlow Heights 18
- Marlton 18
- Mellwood 18
- Montgomery Village 18
- Morningside 18
- Mount Rainier 18
- New Carrollton 18
- North Kensington 18
- Olney 18
- Peppermill Village 18
- Pocomoke City 18
- Queenland 18
- Redland 18
- Rosaryville 18
- Rossmoor 18
- Seabrook 18
- Silver Hill 18
- South Kensington 18
- Spencerville 18
- Springdale 18
- Suitland 18
- Suitland-Silver Hill 18
- Summerfield 18
- Temple Hills 18
- Walker Mill 18
- Walkersville 18
- Westphalia 18
- White Oak 18
- Woodmore 18
- Bartonsville 17
- Brookmont 17
- Chevy Chase Village 17
- Clover Hill 17
- Darnestown 17
- Friendly 17
- Friendship Village 17
- Germantown 17
- Glassmanor 17
- Green Valley 17
- Hebron 17
- National Harbor 17
- Oxon Hill-Glassmanor 17
- Princess Anne 17
- Saint Charles 17
- Somerset 17
- Spring Ridge 17
- St. Charles 17
- Waldorf 17
- Accokeek 16
- Bennsville 16
- Braddock Heights 16
- Brandywine 16
- Bryans Road 16
- Buckeystown 16
- Cabin John 16
- Cavetown 16
- Centreville 16
- Fort Washington 16
- Hyattsville 16
- Indian Head 16
- Millington 16
- Potomac Heights 16
- Smithsburg 16
- Travilah 16
- Adamstown 15
- Fruitland 15
- Jefferson 15
- Myersville 15
- Poolesville 15
- Salisbury 15
- Boonsboro 14
- Bowling Green 14
- Cresaptown 14
- Cumberland 14
- Fountainhead-Orchard Hills 14
- Halfway 14
- Hancock 14
- La Vale 14
- Lonaconing 14
- Maugansville 14
- Mountain Lake Park 14
- Oakland 14
- Paramount-Long Meadow 14
- Parole 14
- Pittsville 14
- Point of Rocks 14
- Potomac Park 14
- Robinwood 14
- Westernport 14
- Berlin 13
- Bethesda 13
- Gaithersburg 13
- Ocean City 13
- Ocean Pines 13
- Saint James 13
- Snow Hill 13
- West Ocean City 13
- Williamsport 13
- Wilson-Conococheague 13
- Hagerstown 12
- Hanover 12
- West Laurel 12
- Derwood 11
- Beltsville 3
AQI US, Metric