This map shows modeled outdoor noise across Palmer Heights 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 1,139 Palmer Heights residents, or 42.2%, live above that level. By land area, 46.4% of Palmer Heights is above 55 dBA.
See how noise in Palmer Heights compares to similar-sized neighborhoods.
Noise by Part of Palmer Heights
Average noise levels for Palmer Heights residents, grouped by direction from the center of Palmer Heights. The highest population-weighted average is in central Palmer Heights; the lowest is in northwestern Palmer Heights, where just 41% of residents live in blocks above the EPA's 55 dBA threshold, roughly the same as the share in the loudest section.
Central Palmer Heights
36% of people above 55 dBA
Southeastern Palmer Heights
52% of people above 55 dBA
Eastern Palmer Heights
61% of people above 55 dBA
Northern Palmer Heights
41% of people above 55 dBA
Northwestern Palmer Heights
41% of people above 55 dBA
To the human ear, noise in central Palmer Heights sounds about 77% louder than in northwestern Palmer Heights, a 8.2 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 Lehigh Valley Thruway do you need to be?
Lehigh Valley Thruway produces an estimated 73 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 33% of Palmer Heights sits under tree canopy (much heavier than most neighborhoods) and roughly 30% 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.