Noise Levels in 93445, CA | Find Quiet Neighborhoods With Our Sound Map
51 dBA
Average noise across 93445
Quiet office to normal conversation
799
Residents above the EPA 55 dBA threshold
18% of 93445 residents
78 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across 93445 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 799 93445 residents, or 18.0%, live above that level. By land area, 19.8% of 93445 is above 55 dBA.
80.2% below 55 dBA
19.8% above 55 dBA
See how noise in 93445 compares to similar-sized zip codes.
Noise by Part of 93445
Average noise levels for 93445 residents, grouped by direction from the center of 93445. The highest population-weighted average is in central 93445; the lowest is in eastern 93445, where just 9% of residents live in blocks above the EPA's 55 dBA threshold, about half the share in the loudest section.
Central 93445
52.4 dBA · Moderate
Quiet office to normal conversation
Northwestern 93445
51.9 dBA · Moderate
Quiet office to normal conversation
Southeastern 93445
50.9 dBA · Moderate
Quiet office
Western 93445
50.8 dBA · Moderate
Quiet office
Eastern 93445
49.8 dBA · Mostly quiet
Quiet office
To the human ear, noise in central 93445 sounds about 20% louder than in eastern 93445, a 2.6 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 78 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
78 dBA
City bus interior
165 ft
63 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 2% of 93445 sits under tree canopy (much lighter than most zip codes) and roughly 49% 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 93445. 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.
How Noise Is Distributed Across 93445
The bar chart below shows the share of 93445 residents in each noise band. About 88% 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 93445 Compares
93445 sits at the quieter end of the spectrum. Below: how 93445's average outdoor noise and share of residents above the EPA threshold compare with 93449, 93434, 93433, and 93453.
Average noise level (dBA)
93445's 51.2 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 93445 because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 18.0% of 93445 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, 19.8% of 93445'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 93445
- 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 93445 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.
