This map shows modeled outdoor noise across 93646 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 1,721 93646 residents, or 18.1%, live above that level. By land area, 13.2% of 93646 is above 55 dBA.
See how noise in 93646 compares to similar-sized zip codes.
Noise by Part of 93646
Average noise levels for 93646 residents, grouped by direction from the center of 93646. Western 93646 carries the highest population-weighted average; Southern 93646 carries the lowest. Just 3% of residents in Southern 93646 live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Western 93646.
Central 93646
30% of people above 55 dBA
Eastern 93646
12% of people above 55 dBA
Northern 93646
23% of people above 55 dBA
Southern 93646
3% of people above 55 dBA
Western 93646
24% of people above 55 dBA
Western 93646 sounds about 39% louder than Southern 93646 to the human ear, a 4.8 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 63 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.
Calculated from the model's calibrated attenuation formula. About 1% of 93646 sits under tree canopy (much lighter than most zip codes) and roughly 26% 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.