Noise Levels in 92505, CA | Find Quiet Neighborhoods With Our Sound Map
54 dBA
Average noise across 92505
Quiet office to normal conversation
13,894
Residents above the EPA 55 dBA threshold
30% of 92505 residents
83 dBA
Loudest residential point
Food blender at arm’s length
This map shows modeled outdoor noise across 92505 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 13,894 92505 residents, or 29.6%, live above that level. By land area, 30.6% of 92505 is above 55 dBA.
69.4% below 55 dBA
30.6% above 55 dBA
See how noise in 92505 compares to similar-sized zip codes.
Noise by Part of 92505
Average noise levels for 92505 residents, grouped by direction from the center of 92505. The highest population-weighted average is in southern 92505; the lowest is in northeastern 92505, where just 12% of residents live in blocks above the EPA's 55 dBA threshold, a third of the share in the loudest section.
Southern 92505
62.1 dBA · Loud
Busy restaurant
Southeastern 92505
58.8 dBA · Loud
Normal conversation an arm’s length away
Central 92505
53.4 dBA · Moderate-loud
Quiet office to normal conversation
Northwestern 92505
50.5 dBA · Moderate
Quiet office
Northeastern 92505
49.8 dBA · Mostly quiet
Quiet office
To the human ear, noise in southern 92505 sounds about 135% louder than in northeastern 92505, a 12.3 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 State Rte 91 do you need to be?
State Rte 91 produces an estimated 79 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
79 dBA
City bus interior
165 ft
64 dBA
Busy restaurant
330 ft
55 dBA
Quiet office to normal conversation
660 ft
46 dBA
Quiet office
¼ mile
38 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 3% of 92505 sits under tree canopy (much lighter than most zip codes) and roughly 39% 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 92505. 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
Ontario International (ONT) sits northwest of 92505. 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 92505, 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 92505
The bar chart below shows the share of 92505 residents in each noise band. About 73% of residents live below the EPA's 55 dBA threshold, and roughly 10% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How 92505 Compares
92505 sits the lowest among the peer group. Below: how 92505's average outdoor noise and share of residents above the EPA threshold compare with 92504, 92879, 92506, and 92507.
Average noise level (dBA)
92505's 53.5 dBA pop-weighted average is the lowest among the peer group. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than 92505 because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 29.6% of 92505 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, 30.6% of 92505'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 92505
- 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 State Rte 91 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 3% of 92505 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. Ontario International's approach paths concentrate aviation noise to the northwest. Neighborhoods to the southeast of downtown show no measurable contribution from the airport.
