Noise Levels in Dorchester Center, Boston, MA | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across Dorchester Center
Normal conversation an arm’s length away
5,985
Residents above the EPA 55 dBA threshold
59% of Dorchester Center residents
100 dBA
Loudest residential point
Power saw
This map shows modeled outdoor noise across Dorchester Center 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.
Overall
Road
Rail
Aviation
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
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 5,985 Dorchester Center residents, or 59.1%, live above that level. By land area, 67.4% of Dorchester Center is above 55 dBA.
Average noise levels for Dorchester Center residents, grouped by direction from the center of Dorchester Center. Central Dorchester Center carries the highest population-weighted average; Eastern Dorchester Center carries the lowest. Just 34% of residents in Eastern Dorchester Center live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in Central Dorchester Center.
Central Dorchester Center
56.8 dBA · Moderate-loud
Normal conversation an arm’s length away
63% of people above 55 dBA
QuietLoud
Eastern Dorchester Center
54.3 dBA · Moderate-loud
Quiet office to normal conversation
34% of people above 55 dBA
QuietLoud
Northern Dorchester Center
56.5 dBA · Moderate-loud
Normal conversation an arm’s length away
69% of people above 55 dBA
QuietLoud
Southern Dorchester Center
56.5 dBA · Moderate-loud
Normal conversation an arm’s length away
55% of people above 55 dBA
QuietLoud
Western Dorchester Center
56.1 dBA · Moderate-loud
Normal conversation an arm’s length away
56% of people above 55 dBA
QuietLoud
Central Dorchester Center sounds about 19% louder than Eastern Dorchester Center to the human ear, a 2.5 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 do you need to be?
produces an estimated 100 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 normal conversation an arm’s length away.
At source
100 dBA
Power saw
165 ft
85 dBA
Food blender at arm’s length
330 ft
77 dBA
City bus interior
660 ft
69 dBA
Highway traffic 50 ft away
¼ mile
61 dBA
Normal conversation an arm’s length away
½ mile
52 dBA
Quiet office to normal conversation
Calculated from the model's calibrated attenuation formula. About 27% of Dorchester Center sits under tree canopy (heavier than most neighborhoods) and roughly 48% 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 Dorchester Center. 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
General Edward Lawrence Logan International (BOS) sits northeast of Dorchester Center. 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 Dorchester Center, particularly to the southwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Dorchester Center
The bar chart below shows the share of Dorchester Center residents in each noise band. About 41% of residents live below the EPA's 55 dBA threshold, and roughly 11% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Dorchester Center Compares
Dorchester Center sits the lowest among the peer group. Below: how Dorchester Center's average outdoor noise and share of residents above the EPA threshold compare with Mount Bowdoin, Cambridgeport, Mid-Cambridge, and Washington Square.
Average noise level (dBA)
Dorchester Center's 56.3 dBA pop-weighted average is the lowest among the peer group. Massachusetts as a whole averages 54.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Dorchester Center because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 59.1% of Dorchester Center residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's fewer than any of its peer group. Measured by land area instead, 67.4% of Dorchester Center's footprint sits above 55 dBA, against a Massachusetts average of 40.0% and a national average of 28.1%.
What This Means if You're Moving to Dorchester Center
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 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 27% of Dorchester Center is under tree cover (heavier than most neighborhoods), and the dominant land cover is medium-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. General Edward Lawrence Logan International's approach paths concentrate aviation noise to the northeast. Neighborhoods to the southwest of downtown show no measurable contribution from the airport.
Sources & Methodology
The BestNeighborhood noise model is calibrated against nearly one million federal ground-truth measurements across four states. Road noise is computed from segment-level federal traffic data and propagated outward using physics-based acoustic decay, with attenuation rates that depend on the surrounding land cover.
All inputs are published federal datasets. Block-level noise is computed by combining road, rail, and aviation sound sources in the energy domain, the same physics used in professional environmental noise assessments. Read the full methodology.
