Noise Levels in Idlewild South, Charlotte, NC | Find Quiet Neighborhoods With Our Sound Map
54 dBA
Average noise across Idlewild South
Quiet office to normal conversation
1,646
Residents above the EPA 55 dBA threshold
24% of Idlewild South residents
73 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Idlewild South 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 1,646 Idlewild South residents, or 23.7%, live above that level. By land area, 24.0% of Idlewild South is above 55 dBA.
76.0% below 55 dBA
24.0% above 55 dBA
See how noise in Idlewild South compares to similar-sized neighborhoods.
Noise by Part of Idlewild South
Average noise levels for Idlewild South residents, grouped by direction from the center of Idlewild South. The highest population-weighted average is in southwestern Idlewild South; the lowest is in southeastern Idlewild South, where just 18% of residents live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in the loudest section.
Southwestern Idlewild South
59.1 dBA · Loud
Normal conversation an arm’s length away
Central Idlewild South
58.1 dBA · Loud
Normal conversation an arm’s length away
Northern Idlewild South
55.9 dBA · Moderate-loud
Quiet office to normal conversation
Eastern Idlewild South
53.2 dBA · Moderate-loud
Quiet office to normal conversation
Southeastern Idlewild South
53.2 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in southwestern Idlewild South sounds about 51% louder than in southeastern Idlewild South, a 5.9 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 Ns-904 do you need to be?
Ns-904 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.
At source
65 dBA
Busy restaurant
165 ft
52 dBA
Quiet office to normal conversation
330 ft
45 dBA
Quiet suburban street at night
660 ft
37 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 52% of Idlewild South sits under tree canopy (much heavier than most neighborhoods) and roughly 27% 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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Airport Noise
Charlotte/Douglas International (CLT) sits west of Idlewild South. 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 Idlewild South, particularly to the east, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Idlewild South
The bar chart below shows the share of Idlewild South residents in each noise band. About 67% of residents live below the EPA's 55 dBA threshold, and roughly 16% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Idlewild South Compares
Idlewild South sits at the louder end of the spectrum. Below: how Idlewild South's average outdoor noise and share of residents above the EPA threshold compare with North Sharon Amity, Farm Pond, Becton Park, and Oak Forest.
Average noise level (dBA)
Idlewild South's 54.0 dBA pop-weighted average is at the louder end of the spectrum. North Carolina as a whole averages 49.7 dBA and the U.S. averages 52.0 dBA. Both are lower than Idlewild South because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 23.7% of Idlewild South residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's more than any of its peer group. Measured by land area instead, 24.0% of Idlewild South's footprint sits above 55 dBA, against a North Carolina average of 22.6% and a national average of 28.1%.
What This Means if You're Moving to Idlewild South
- 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 Ns-904 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 52% of Idlewild South is under tree cover (much heavier than most 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. Charlotte/Douglas International's approach paths concentrate aviation noise to the west. Neighborhoods to the east of downtown show no measurable contribution from the airport.
