Noise Levels in Evergreen, San Jose, CA | Find Quiet Neighborhoods With Our Sound Map
53 dBA
Average noise across Evergreen
Quiet office to normal conversation
26,404
Residents above the EPA 55 dBA threshold
34% of Evergreen residents
82 dBA
Loudest residential point
Food blender at arm’s length
This map shows modeled outdoor noise across Evergreen 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 26,404 Evergreen residents, or 34.3%, live above that level. By land area, 35.1% of Evergreen is above 55 dBA.
64.9% below 55 dBA
35.1% above 55 dBA
See how noise in Evergreen compares to similar-sized neighborhoods.
Noise by Part of Evergreen
Average noise levels for Evergreen residents, grouped by direction from the center of Evergreen. The highest population-weighted average is in southwestern Evergreen; the lowest is in southeastern Evergreen, where just 13% of residents live in blocks above the EPA's 55 dBA threshold, about half the share in the loudest section.
Southwestern Evergreen
60.5 dBA · Loud
Normal conversation an arm’s length away
Western Evergreen
57.7 dBA · Moderate-loud
Normal conversation an arm’s length away
Northern Evergreen
53.9 dBA · Moderate-loud
Quiet office to normal conversation
Eastern Evergreen
51.7 dBA · Moderate
Quiet office to normal conversation
Southeastern Evergreen
47.3 dBA · Mostly quiet
Quiet office
To the human ear, noise in southwestern Evergreen sounds about 150% louder than in southeastern Evergreen, a 13.2 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 US Hwy 101 do you need to be?
US Hwy 101 produces an estimated 78 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
78 dBA
City bus interior
165 ft
64 dBA
Busy restaurant
330 ft
55 dBA
Quiet office to normal conversation
660 ft
47 dBA
Quiet office
¼ mile
39 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 6% of Evergreen sits under tree canopy (lighter than most neighborhoods) and roughly 49% 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
Norman Y Mineta San Jose International (SJC) sits northwest of Evergreen. 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 Evergreen, particularly to the southeast, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Evergreen
The bar chart below shows the share of Evergreen residents in each noise band. About 72% of residents live below the EPA's 55 dBA threshold, and roughly 8% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Evergreen Compares
Evergreen sits the lowest among the peer group. Below: how Evergreen's average outdoor noise and share of residents above the EPA threshold compare with North Valley, Downtown San Jose, Cambrian Park, and Willow Glen.
Average noise level (dBA)
Evergreen's 53.0 dBA pop-weighted average is the lowest among the peer group. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Evergreen because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 34.3% of Evergreen 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, 35.1% of Evergreen'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 Evergreen
- 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 Hwy 101 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 6% of Evergreen 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. Norman Y Mineta San Jose International's approach paths concentrate aviation noise to the northwest. Neighborhoods to the southeast of downtown show no measurable contribution from the airport.
