Noise Levels in Stony Brook, NY | Find Quiet Neighborhoods With Our Sound Map
51 dBA
Average noise across Stony Brook
Quiet office
3,128
Residents above the EPA 55 dBA threshold
16% of Stony Brook residents
74 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Stony Brook 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 3,128 Stony Brook residents, or 15.7%, live above that level. By land area, 22.3% of Stony Brook is above 55 dBA.
77.7% below 55 dBA
22.3% above 55 dBA
See how noise in Stony Brook compares to similar-sized cities.
Noise by Part of Stony Brook
Average noise levels for Stony Brook residents, grouped by direction from the center of Stony Brook. The highest population-weighted average is in northern Stony Brook; the lowest is in southwestern Stony Brook, where just 8% of residents live in blocks above the EPA's 55 dBA threshold, a third of the share in the loudest section.
Northern Stony Brook
55.9 dBA · Moderate-loud
Quiet office to normal conversation
Northwestern Stony Brook
55.9 dBA · Moderate-loud
Quiet office to normal conversation
Southern Stony Brook
54.7 dBA · Moderate-loud
Quiet office to normal conversation
Eastern Stony Brook
51.7 dBA · Moderate
Quiet office to normal conversation
Southwestern Stony Brook
50.8 dBA · Moderate
Quiet office
To the human ear, noise in northern Stony Brook sounds about 42% louder than in southwestern Stony Brook, a 5.1 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 Nicolls Rd do you need to be?
Nicolls Rd produces an estimated 67 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
67 dBA
Highway traffic 50 ft away
165 ft
54 dBA
Quiet office to normal conversation
330 ft
46 dBA
Quiet office
660 ft
39 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 39% of Stony Brook sits under tree canopy (about average for cities) and roughly 34% 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.
-->
Rail Noise
Active freight rail runs through parts of Stony Brook. 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
Long Island Macarthur (ISP) sits south of Stony Brook. 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 55 dBA on the map's Overall layer. Blocks on the opposite side of Stony Brook, 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 Stony Brook
The bar chart below shows the share of Stony Brook residents in each noise band. About 80% of residents live below the EPA's 55 dBA threshold, and roughly 1% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Stony Brook Compares
Stony Brook sits the lowest among the peer group. Below: how Stony Brook's average outdoor noise and share of residents above the EPA threshold compare with Selden, Ronkonkoma, Hauppauge, and Centereach.
Average noise level (dBA)
Stony Brook's 50.6 dBA pop-weighted average is the lowest among the peer group. New York as a whole averages 55.4 dBA and the U.S. averages 52.0 dBA. Both are lower than Stony Brook because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 15.7% of Stony Brook 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, 22.3% of Stony Brook's footprint sits above 55 dBA, against a New York average of 30.9% and a national average of 28.1%.
What This Means if You're Moving to Stony Brook
- 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 Nicolls Rd 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 39% of Stony Brook is under tree cover (about average for cities), and the dominant land cover is low-density developed open space. 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. Long Island Macarthur's approach paths concentrate aviation noise to the south. Neighborhoods to the north of downtown show no measurable contribution from the airport.
