Noise Levels in Downtown Durham, Durham, NC | Find Quiet Neighborhoods With Our Sound Map
58 dBA
Average noise across Downtown Durham
Normal conversation an arm’s length away
2,858
Residents above the EPA 55 dBA threshold
49% of Downtown Durham residents
89 dBA
Loudest residential point
Lawnmower at 1 m
This map shows modeled outdoor noise across Downtown Durham 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 2,858 Downtown Durham residents, or 49.2%, live above that level. By land area, 56.9% of Downtown Durham is above 55 dBA.
43.1% below 55 dBA
56.9% above 55 dBA
See how noise in Downtown Durham compares to similar-sized neighborhoods.
Noise by Part of Downtown Durham
Average noise levels for Downtown Durham residents, grouped by direction from the center of Downtown Durham. The highest population-weighted average is in southern Downtown Durham; the lowest is in eastern Downtown Durham, where just 50% of residents live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in the loudest section.
Southern Downtown Durham
69.8 dBA · Loud
Highway traffic 50 ft away
Southwestern Downtown Durham
69.8 dBA · Loud
Highway traffic 50 ft away
Southeastern Downtown Durham
62.7 dBA · Loud
Busy restaurant
Northern Downtown Durham
60.6 dBA · Loud
Normal conversation an arm’s length away
Eastern Downtown Durham
57.4 dBA · Moderate-loud
Normal conversation an arm’s length away
To the human ear, noise in southern Downtown Durham sounds about 136% louder than in eastern Downtown Durham, a 12.4 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 US-15 -bus do you need to be?
US-15 -bus produces an estimated 70 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
70 dBA
Highway traffic 50 ft away
165 ft
57 dBA
Normal conversation an arm’s length away
330 ft
50 dBA
Quiet office
660 ft
42 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 10% of Downtown Durham sits under tree canopy (lighter than most neighborhoods) and roughly 68% 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 Durham. 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
Raleigh-Durham International (RDU) sits southeast of Downtown Durham. The U.S. Department of Transportation models aviation noise around this airport from federal traffic data, 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 65 dBA on the map's Overall layer. Blocks on the opposite side of Downtown Durham, particularly to the northwest, 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 Durham
The bar chart below shows the share of Downtown Durham residents in each noise band. About 40% of residents live below the EPA's 55 dBA threshold, and roughly 35% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Downtown Durham Compares
Downtown Durham sits the highest among the peer group. Below: how Downtown Durham's average outdoor noise and share of residents above the EPA threshold compare with East Durham, Old West Durham, Northeast Durham, and University of NC at Chapel Hill.
Average noise level (dBA)
Downtown Durham's 58.0 dBA pop-weighted average is the highest among the peer group. North Carolina as a whole averages 49.7 dBA and the U.S. averages 52.0 dBA. Both are lower than Downtown Durham because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 49.2% of Downtown Durham 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, 56.9% of Downtown Durham's footprint sits above 55 dBA, against a North Carolina average of 22.6% and a national average of 28.1%.
What This Means if You're Moving to Downtown Durham
- 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 US-15 -bus 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 10% of Downtown Durham is under tree cover (lighter 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. Raleigh-Durham International's approach paths concentrate aviation noise to the southeast. Neighborhoods to the northwest of downtown show no measurable contribution from the airport.
