Noise Levels in Chabot Terrace, Vallejo, CA | Find Quiet Neighborhoods With Our Sound Map
55 dBA
Average noise across Chabot Terrace
Quiet office to normal conversation
2,607
Residents above the EPA 55 dBA threshold
40% of Chabot Terrace residents
80 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Chabot Terrace 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 2,607 Chabot Terrace residents, or 40.1%, live above that level. By land area, 47.5% of Chabot Terrace is above 55 dBA.
Average noise levels for Chabot Terrace residents, grouped by direction from the center of Chabot Terrace. Central Chabot Terrace carries the highest population-weighted average; Southern Chabot Terrace carries the lowest. Just 0% of residents in Southern Chabot Terrace live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Central Chabot Terrace.
Central Chabot Terrace
56.0 dBA · Moderate-loud
Quiet office to normal conversation
50% of people above 55 dBA
QuietLoud
Eastern Chabot Terrace
55.6 dBA · Moderate-loud
Quiet office to normal conversation
44% of people above 55 dBA
QuietLoud
Northern Chabot Terrace
53.3 dBA · Moderate-loud
Quiet office to normal conversation
25% of people above 55 dBA
QuietLoud
Southern Chabot Terrace
49.8 dBA · Mostly quiet
Quiet office
0% of people above 55 dBA
QuietLoud
Western Chabot Terrace
55.5 dBA · Moderate-loud
Quiet office to normal conversation
40% of people above 55 dBA
QuietLoud
Central Chabot Terrace sounds about 54% louder than Southern Chabot Terrace to the human ear, a 6.2 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 State Rte 37 do you need to be?
State Rte 37 produces an estimated 76 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
76 dBA
City bus interior
165 ft
61 dBA
Busy restaurant
330 ft
53 dBA
Quiet office to normal conversation
660 ft
44 dBA
Quiet suburban street at night
¼ mile
36 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 4% of Chabot Terrace sits under tree canopy (much lighter than most neighborhoods) and roughly 55% 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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How Noise Is Distributed Across Chabot Terrace
The bar chart below shows the share of Chabot Terrace residents in each noise band. About 61% of residents live below the EPA's 55 dBA threshold, and roughly 17% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Chabot Terrace Compares
Chabot Terrace sits at the quieter end of the spectrum. Below: how Chabot Terrace's average outdoor noise and share of residents above the EPA threshold compare with Harry Floyd Terrace, Flosden, Carquinez Heights, and Westwood-San Francisco.
Average noise level (dBA)
Chabot Terrace's 55.1 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 Chabot Terrace because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 40.1% of Chabot Terrace 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, 47.5% of Chabot Terrace'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 Chabot Terrace
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 State Rte 37 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 4% of Chabot Terrace is under tree cover (much 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.
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.
