Noise Levels in Downtown, Baltimore, MD | Find Quiet Neighborhoods With Our Sound Map
63 dBA
Average noise across Downtown
Busy restaurant
5,382
Residents above the EPA 55 dBA threshold
93% of Downtown residents
77 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Downtown at 100-meter resolution, combining road, aviation, and rail sources. Green areas measure below 45 dBA. Orange and red exceed the EPA's 55 dBA outdoor threshold linked to long-term health effects. Use the layer toggles to view each source on its own or all together.
What the numbers sound like
- 30 dBAWhisper
- 40 dBASoft rainfall
- 45 dBAQuiet suburban street at night
- 50 dBAQuiet office
- 55 dBAEPA outdoor threshold: light traffic 100 ft away
- 60 dBANormal conversation an arm's length away
- 65 dBABusy restaurant
- 70 dBAHighway traffic 50 ft away
- 80 dBACity bus interior
Population Above the EPA Outdoor Threshold
The EPA's 55 dBA outdoor reference level is a common benchmark for residential noise exposure, especially for activity interference, annoyance, and long-term community noise concerns. About 5,382 Downtown residents, or 92.9%, live above that level. By land area, 96.9% of Downtown is above 55 dBA.
3.1% below 55 dBA
96.9% above 55 dBA
See how noise in Downtown compares to similar-sized neighborhoods.
Noise by Part of Downtown
Average noise levels for Downtown residents, grouped by direction from the center of Downtown. The highest population-weighted average is in western Downtown; the lowest is in central Downtown, where just 94% of residents live in blocks above the EPA's 55 dBA threshold, roughly the same as the share in the loudest section.
Western Downtown
68.0 dBA · Loud
Highway traffic 50 ft away
Eastern Downtown
65.4 dBA · Loud
Busy restaurant
Southeastern Downtown
65.4 dBA · Loud
Busy restaurant
Northwestern Downtown
65.2 dBA · Loud
Busy restaurant
Central Downtown
65.1 dBA · Loud
Busy restaurant
To the human ear, noise in western Downtown sounds about 22% louder than in central Downtown, a 2.9 dBA gap. Every 10 dBA roughly doubles perceived loudness. Within any of these directions, two homes a quarter mile apart can still differ by 10 or more dBA depending on how close they sit to a major highway.
How far back from I-83 do you need to be?
I-83 produces an estimated 75 dBA at its loudest centerline points. Noise drops logarithmically with distance, with the exact rate depending on what's between you and the road. Tree cover, walls, terrain, and pavement type all matter. At roughly a quarter mile back, traffic fades into the noise level of a soft rainfall.
At source
75 dBA
City bus interior
165 ft
60 dBA
Normal conversation an arm’s length away
330 ft
52 dBA
Quiet office to normal conversation
660 ft
43 dBA
Quiet suburban street at night
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 2% of Downtown sits under tree canopy (much lighter than most neighborhoods) and roughly 87% is impervious surface like pavement and rooftops. Both are folded into the per-place decay rate above. Heavier canopy pulls noise down faster with distance; impervious surfaces slow the drop.
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Rail Noise
Active freight rail runs through parts of Downtown. For most blocks the rail-only contribution is small. Combined road-plus-rail noise rarely exceeds road noise on its own. The exceptions are the handful of blocks within roughly a quarter mile of the right-of-way during pass-through hours.
Use the Rail toggle on the map above to isolate rail's contribution from road and aviation.
Airport Noise
Baltimore/Washington International Thurgood Marshall (BWI) sits south of Downtown. The U.S. Department of Transportation measures aviation noise around this airport directly, and the model uses those federal measurements rather than synthetic predictions.
Blocks under the approach and departure paths carry combined road-plus-aviation noise, with some exceeding 75 dBA on the map's Overall layer. Blocks on the opposite side of Downtown, particularly to the north, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Downtown
The bar chart below shows the share of Downtown residents in each noise band. About 0% of residents live below the EPA's 55 dBA threshold, and roughly 73% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Downtown Compares
Downtown sits the highest among the peer group. Below: how Downtown's average outdoor noise and share of residents above the EPA threshold compare with Hopkins-Middle East, Patterson Park, Morrell Park, and Greenmount.
Average noise level (dBA)
Downtown's 62.6 dBA pop-weighted average is the highest among the peer group. Maryland as a whole averages 52.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Downtown because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 92.9% of Downtown residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's more than any of its peer group. Measured by land area instead, 96.9% of Downtown's footprint sits above 55 dBA, against a Maryland average of 32.9% and a national average of 28.1%.
What This Means if You're Moving to Downtown
- Distance from highways matters more than the neighborhood name. Two homes in the same zip code can differ by 20 dBA if one sits 100 meters from I-83 and the other 500 meters away. The model captures this at 100-meter resolution, so noise exposure changes block by block.
- Tree canopy can help reduce modeled noise exposure. Roughly 2% of Downtown is under tree cover (much lighter than most neighborhoods), and the dominant land cover is high-intensity developed land. Both are measured from federal USDA Forest Service and USGS satellite imagery at 30-meter resolution. Streets with 60% or higher canopy show 3 to 5 dBA lower noise than comparable streets with bare ground or pavement, which is why the per-place decay rate above already accounts for it.
- Airport noise is directional. Baltimore/Washington International Thurgood Marshall's approach paths concentrate aviation noise to the south. Neighborhoods to the north of downtown show no measurable contribution from the airport.
