This map shows modeled outdoor noise across Independence 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 5 Independence residents, or 1.3%, live above that level. By land area, 2.8% of Independence is above 55 dBA.
See how noise in Independence compares to similar-sized cities.
Noise by Part of Independence
Average noise levels for Independence residents, grouped by direction from the center of Independence. Western Independence carries the highest population-weighted average; Southern Independence carries the lowest. Just 0% of residents in Southern Independence live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Western Independence.
Central Independence
2% of people above 55 dBA
Eastern Independence
1% of people above 55 dBA
Southern Independence
0% of people above 55 dBA
Western Independence
4% of people above 55 dBA
Western Independence sounds about 34% louder than Southern Independence to the human ear, a 4.2 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 Hwy 40 do you need to be?
Hwy 40 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 0% of Independence sits under tree canopy (much lighter than most cities) and roughly 0% 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.