Noise Levels in Downtown Berkeley, Berkeley, CA | Find Quiet Neighborhoods With Our Sound Map
55 dBA
Average noise across Downtown Berkeley
Quiet office to normal conversation
2,751
Residents above the EPA 55 dBA threshold
59% of Downtown Berkeley residents
69 dBA
Loudest residential point
Highway traffic 50 ft away
This map shows modeled outdoor noise across Downtown Berkeley 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 2,751 Downtown Berkeley residents, or 59.4%, live above that level. By land area, 45.5% of Downtown Berkeley is above 55 dBA.
54.5% below 55 dBA
45.5% above 55 dBA
See how noise in Downtown Berkeley compares to similar-sized neighborhoods.
Noise by Part of Downtown Berkeley
Average noise levels for Downtown Berkeley residents, grouped by direction from the center of Downtown Berkeley. The highest population-weighted average is in southern Downtown Berkeley; the lowest is in central Downtown Berkeley, where just 42% of residents live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in the loudest section.
Southern Downtown Berkeley
61.9 dBA · Loud
Busy restaurant
Northern Downtown Berkeley
60.1 dBA · Loud
Normal conversation an arm’s length away
Northwestern Downtown Berkeley
60.1 dBA · Loud
Normal conversation an arm’s length away
Central Downtown Berkeley
55.8 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in southern Downtown Berkeley sounds about 53% louder than in central Downtown Berkeley, a 6.1 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 do you need to be?
produces an estimated 69 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
69 dBA
Highway traffic 50 ft away
165 ft
54 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 5% of Downtown Berkeley sits under tree canopy (lighter than most neighborhoods) and roughly 75% 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
San Francisco Bay Oakland International (OAK) sits south of Downtown Berkeley. 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 Berkeley, 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 Berkeley
The bar chart below shows the share of Downtown Berkeley residents in each noise band. About 35% 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 Downtown Berkeley Compares
Downtown Berkeley sits at the quieter end of the spectrum. Below: how Downtown Berkeley's average outdoor noise and share of residents above the EPA threshold compare with Clawson, Hoover-Foster, Golden Gate, and Richmond Annex.
Average noise level (dBA)
Downtown Berkeley's 55.3 dBA pop-weighted average is at the quieter end of the spectrum. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Downtown Berkeley because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 59.4% of Downtown Berkeley 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, 45.5% of Downtown Berkeley's footprint sits above 55 dBA, against a California average of 36.0% and a national average of 28.1%.
What This Means if You're Moving to Downtown Berkeley
- 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 5% of Downtown Berkeley 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. San Francisco Bay Oakland International's approach paths concentrate aviation noise to the south. Neighborhoods to the north of downtown show no measurable contribution from the airport.
