Noise Levels in Central District, Seattle, WA | Find Quiet Neighborhoods With Our Sound Map
57 dBA
Average noise across Central District
Normal conversation an arm’s length away
12,125
Residents above the EPA 55 dBA threshold
82% of Central District residents
66 dBA
Loudest residential point
Busy restaurant
This map shows modeled outdoor noise across Central District 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 12,125 Central District residents, or 82.4%, live above that level. By land area, 78.1% of Central District is above 55 dBA.
21.9% below 55 dBA
78.1% above 55 dBA
See how noise in Central District compares to similar-sized neighborhoods.
Noise by Part of Central District
Average noise levels for Central District residents, grouped by direction from the center of Central District. The highest population-weighted average is in northwestern Central District; the lowest is in northeastern Central District, where just 35% of residents live in blocks above the EPA's 55 dBA threshold, about half the share in the loudest section.
Northwestern Central District
59.7 dBA · Loud
Normal conversation an arm’s length away
Southwestern Central District
59.0 dBA · Loud
Normal conversation an arm’s length away
Western Central District
57.7 dBA · Moderate-loud
Normal conversation an arm’s length away
Eastern Central District
54.9 dBA · Moderate-loud
Quiet office to normal conversation
Northeastern Central District
54.2 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in northwestern Central District sounds about 46% louder than in northeastern Central District, a 5.5 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 66 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
66 dBA
Busy restaurant
165 ft
53 dBA
Quiet office to normal conversation
330 ft
46 dBA
Quiet suburban street at night
660 ft
38 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 20% of Central District sits under tree canopy (heavier than most neighborhoods) and roughly 62% 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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Airport Noise
Seattle-Tacoma International (SEA) sits south of Central District. 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 50 dBA on the map's Overall layer. Blocks on the opposite side of Central District, 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 Central District
The bar chart below shows the share of Central District residents in each noise band. About 17% of residents live below the EPA's 55 dBA threshold, and roughly 7% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Central District Compares
Central District sits at the louder end of the spectrum. Below: how Central District's average outdoor noise and share of residents above the EPA threshold compare with Queen Anne, First Hill, Wallingford, and Magnolia.
Average noise level (dBA)
Central District's 57.0 dBA pop-weighted average is at the louder end of the spectrum. Washington as a whole averages 51.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Central District because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 82.4% of Central District residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's in the middle of its peer group. Measured by land area instead, 78.1% of Central District's footprint sits above 55 dBA, against a Washington average of 27.7% and a national average of 28.1%.
What This Means if You're Moving to Central District
- 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 20% of Central District 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. Seattle-Tacoma International's approach paths concentrate aviation noise to the south. Neighborhoods to the north of downtown show no measurable contribution from the airport.
