Noise Levels in 90270, CA | Find Quiet Neighborhoods With Our Sound Map
55 dBA
Average noise across 90270
Quiet office to normal conversation
11,425
Residents above the EPA 55 dBA threshold
48% of 90270 residents
80 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across 90270 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 11,425 90270 residents, or 47.8%, live above that level. By land area, 54.5% of 90270 is above 55 dBA.
45.5% below 55 dBA
54.5% above 55 dBA
See how noise in 90270 compares to similar-sized zip codes.
Noise by Part of 90270
Average noise levels for 90270 residents, grouped by direction from the center of 90270. The highest population-weighted average is in southern 90270; the lowest is in northwestern 90270, where just 50% of residents live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in the loudest section.
Southern 90270
63.4 dBA · Loud
Busy restaurant
Central 90270
59.7 dBA · Loud
Normal conversation an arm’s length away
Western 90270
58.6 dBA · Loud
Normal conversation an arm’s length away
Northern 90270
55.3 dBA · Moderate-loud
Quiet office to normal conversation
Northwestern 90270
55.0 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in southern 90270 sounds about 79% louder than in northwestern 90270, a 8.4 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
66 dBA
Busy restaurant
330 ft
58 dBA
Normal conversation an arm’s length away
660 ft
50 dBA
Quiet office
¼ mile
42 dBA
Quiet suburban street at night
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 2% of 90270 sits under tree canopy (much lighter than most zip codes) and roughly 68% 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 90270. 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
Los Angeles International (LAX) sits west of 90270. 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 45 dBA on the map's Overall layer. Blocks on the opposite side of 90270, 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 90270
The bar chart below shows the share of 90270 residents in each noise band. About 54% of residents live below the EPA's 55 dBA threshold, and roughly 9% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How 90270 Compares
90270 sits at the quieter end of the spectrum. Below: how 90270's average outdoor noise and share of residents above the EPA threshold compare with 90240, 91803, 91755, and 90061.
Average noise level (dBA)
90270's 55.2 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 90270 because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 47.8% of 90270 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, 54.5% of 90270'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 90270
- 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 2% of 90270 is under tree cover (much lighter than most zip codes), and the dominant land cover is medium-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. Los Angeles International's approach paths concentrate aviation noise to the west. Neighborhoods to the east of downtown show no measurable contribution from the airport.
