Noise Levels in Newport Coast, CA | Find Quiet Neighborhoods With Our Sound Map
45 dBA
Average noise across Newport Coast
Quiet suburban street at night
630
Residents above the EPA 55 dBA threshold
7% of Newport Coast residents
80 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Newport Coast 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 630 Newport Coast residents, or 6.9%, live above that level. By land area, 13.5% of Newport Coast is above 55 dBA.
86.5% below 55 dBA
13.5% above 55 dBA
See how noise in Newport Coast compares to similar-sized cities.
Noise by Part of Newport Coast
Average noise levels for Newport Coast residents, grouped by direction from the center of Newport Coast. The highest population-weighted average is in the Turtle Ridge area (northeastern Newport Coast); the lowest is in southeastern Newport Coast, where just 0% of residents live in blocks above the EPA's 55 dBA threshold, a fifth of the share in the loudest section.
Turtle Ridge
66.3 dBA · Loud
Highway traffic 50 ft away
Southern Newport Coast
51.4 dBA · Moderate
Quiet office to normal conversation
Northwestern Newport Coast
49.2 dBA · Mostly quiet
Quiet office
Eastern Newport Coast
43.2 dBA · Quiet
Quiet suburban street at night
Southeastern Newport Coast
37.8 dBA · Quiet
Soft rainfall
To the human ear, noise in the Turtle Ridge area (northeastern Newport Coast) sounds about 621% louder than in southeastern Newport Coast, a 28.5 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 80 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
80 dBA
City bus interior
165 ft
67 dBA
Highway traffic 50 ft away
330 ft
60 dBA
Normal conversation an arm’s length away
660 ft
52 dBA
Quiet office to normal conversation
¼ mile
45 dBA
Quiet suburban street at night
½ mile
37 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 20% of Newport Coast sits under tree canopy (lighter than most cities) and roughly 31% 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
John Wayne/Orange County (SNA) sits northwest of Newport Coast. The U.S. Department of Transportation models aviation noise around this airport from federal traffic data, 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 65 dBA on the map's Overall layer. Blocks on the opposite side of Newport Coast, particularly to the southeast, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Newport Coast
The bar chart below shows the share of Newport Coast residents in each noise band. About 82% of residents live below the EPA's 55 dBA threshold, and roughly 0% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Newport Coast Compares
Newport Coast sits at the quieter end of the spectrum. Below: how Newport Coast's average outdoor noise and share of residents above the EPA threshold compare with Corona Del Mar, Coto de Caza, Midway City, and Los Alamitos.
Average noise level (dBA)
Newport Coast's 45.1 dBA pop-weighted average is at the quieter end of the spectrum. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Newport Coast because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 6.9% of Newport Coast residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's fewer than any of its peer group. Measured by land area instead, 13.5% of Newport Coast's footprint sits above 55 dBA, against a California average of 36.0% and a national average of 28.1%.
What This Means if You're Moving to Newport Coast
- 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 20% of Newport Coast is under tree cover (lighter than most cities), 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. John Wayne/Orange County's approach paths concentrate aviation noise to the northwest. Neighborhoods to the southeast of downtown show no measurable contribution from the airport.
