Noise Levels in East Ridge-Ptarmigan Park, Aurora, CO | Find Quiet Neighborhoods With Our Sound Map
54 dBA
Average noise across East Ridge-Ptarmigan Park
Quiet office to normal conversation
1,348
Residents above the EPA 55 dBA threshold
26% of East Ridge-Ptarmigan Park residents
77 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across East Ridge-Ptarmigan Park 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 1,348 East Ridge-Ptarmigan Park residents, or 25.6%, live above that level. By land area, 20.2% of East Ridge-Ptarmigan Park is above 55 dBA.
79.8% below 55 dBA
20.2% above 55 dBA
See how noise in East Ridge-Ptarmigan Park compares to similar-sized neighborhoods.
Noise by Part of East Ridge-Ptarmigan Park
Average noise levels for East Ridge-Ptarmigan Park residents, grouped by direction from the center of East Ridge-Ptarmigan Park. The highest population-weighted average is in eastern East Ridge-Ptarmigan Park; the lowest is in western East Ridge-Ptarmigan Park, where just 18% of residents live in blocks above the EPA's 55 dBA threshold, about half the share in the loudest section.
Eastern East Ridge-Ptarmigan Park
64.1 dBA · Loud
Busy restaurant
Southwestern East Ridge-Ptarmigan Park
59.2 dBA · Loud
Normal conversation an arm’s length away
Central East Ridge-Ptarmigan Park
57.0 dBA · Moderate-loud
Normal conversation an arm’s length away
Northeastern East Ridge-Ptarmigan Park
55.7 dBA · Moderate-loud
Quiet office to normal conversation
Western East Ridge-Ptarmigan Park
52.2 dBA · Moderate
Quiet office to normal conversation
To the human ear, noise in eastern East Ridge-Ptarmigan Park sounds about 128% louder than in western East Ridge-Ptarmigan Park, a 11.9 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 77 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 quiet suburban street at night.
At source
77 dBA
City bus interior
165 ft
65 dBA
Busy restaurant
330 ft
57 dBA
Normal conversation an arm’s length away
660 ft
50 dBA
Quiet office
¼ mile
43 dBA
Quiet suburban street at night
½ mile
36 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 11% of East Ridge-Ptarmigan Park sits under tree canopy (about average for neighborhoods) and roughly 43% 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.
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Rail Noise
Active freight rail runs through parts of East Ridge-Ptarmigan Park. For most blocks the rail-only contribution is small. Combined road-plus-rail noise rarely exceeds road noise on its own. The exceptions are the handful of blocks within roughly a quarter mile of the right-of-way during pass-through hours.
Use the Rail toggle on the map above to isolate rail's contribution from road and aviation.
Airport Noise
Denver International (DEN) sits northeast of East Ridge-Ptarmigan Park. The U.S. Department of Transportation measures aviation noise around this airport directly, and the model uses those federal measurements rather than synthetic predictions.
Blocks under the approach and departure paths carry combined road-plus-aviation noise, with some exceeding 75 dBA on the map's Overall layer. Blocks on the opposite side of East Ridge-Ptarmigan Park, particularly to the southwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across East Ridge-Ptarmigan Park
The bar chart below shows the share of East Ridge-Ptarmigan Park residents in each noise band. About 74% of residents live below the EPA's 55 dBA threshold, and roughly 22% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How East Ridge-Ptarmigan Park Compares
East Ridge-Ptarmigan Park sits at the quieter end of the spectrum. Below: how East Ridge-Ptarmigan Park's average outdoor noise and share of residents above the EPA threshold compare with Utah Park, City Center North, Highline Villages, and Horseshoe Park.
Average noise level (dBA)
East Ridge-Ptarmigan Park's 54.0 dBA pop-weighted average is at the quieter end of the spectrum. Colorado as a whole averages 51.9 dBA and the U.S. averages 52.0 dBA. Both are lower than East Ridge-Ptarmigan Park because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 25.6% of East Ridge-Ptarmigan Park residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's in the middle of its peer group. Measured by land area instead, 20.2% of East Ridge-Ptarmigan Park's footprint sits above 55 dBA, against a Colorado average of 25.4% and a national average of 28.1%.
What This Means if You're Moving to East Ridge-Ptarmigan Park
- Distance from highways matters more than the neighborhood name. Two homes in the same zip code can differ by 20 dBA if one sits 100 meters from and the other 500 meters away. The model captures this at 100-meter resolution, so noise exposure changes block by block.
- Tree canopy can help reduce modeled noise exposure. Roughly 11% of East Ridge-Ptarmigan Park is under tree cover (about average for neighborhoods), and the dominant land cover is low-intensity developed land. Both are measured from federal USDA Forest Service and USGS satellite imagery at 30-meter resolution. Streets with 60% or higher canopy show 3 to 5 dBA lower noise than comparable streets with bare ground or pavement, which is why the per-place decay rate above already accounts for it.
- Airport noise is directional. Denver International's approach paths concentrate aviation noise to the northeast. Neighborhoods to the southwest of downtown show no measurable contribution from the airport.
