This map shows modeled outdoor noise across East Valley 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 1,696 East Valley residents, or 34.0%, live above that level. By land area, 32.0% of East Valley is above 55 dBA.
See how noise in East Valley compares to similar-sized neighborhoods.
Noise by Part of East Valley
Average noise levels for East Valley residents, grouped by direction from the center of East Valley. Eastern East Valley carries the highest population-weighted average; Southern East Valley carries the lowest. Just 32% of residents in Southern East Valley live in blocks above the EPA's 55 dBA threshold, about half the share in Eastern East Valley.
Central East Valley
45% of people above 55 dBA
Eastern East Valley
67% of people above 55 dBA
Northern East Valley
36% of people above 55 dBA
Southern East Valley
32% of people above 55 dBA
Western East Valley
27% of people above 55 dBA
Eastern East Valley sounds about 66% louder than Southern East Valley to the human ear, a 7.3 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 65 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 East Valley sits under tree canopy (much lighter than most neighborhoods) and roughly 51% 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.