This map shows modeled outdoor noise across Pennington-Prospect 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 475 Pennington-Prospect residents, or 16.5%, live above that level. By land area, 12.3% of Pennington-Prospect is above 55 dBA.
See how noise in Pennington-Prospect compares to similar-sized neighborhoods.
Noise by Part of Pennington-Prospect
Average noise levels for Pennington-Prospect residents, grouped by direction from the center of Pennington-Prospect. Central Pennington-Prospect carries the highest population-weighted average; Northern Pennington-Prospect carries the lowest. Just 0% of residents in Northern Pennington-Prospect live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Central Pennington-Prospect.
Central Pennington-Prospect
21% of people above 55 dBA
Eastern Pennington-Prospect
15% of people above 55 dBA
Northern Pennington-Prospect
0% of people above 55 dBA
Southern Pennington-Prospect
0% of people above 55 dBA
Western Pennington-Prospect
34% of people above 55 dBA
Central Pennington-Prospect sounds about 160% louder than Northern Pennington-Prospect to the human ear, a 13.8 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 19% of Pennington-Prospect sits under tree canopy (heavier than most neighborhoods) and roughly 50% 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.