Noise Levels in University Park-San Antonio, San Antonio, TX | Find Quiet Neighborhoods With Our Sound Map
51 dBA
Average noise across University Park-San Antonio
Quiet office to normal conversation
932
Residents above the EPA 55 dBA threshold
27% of University Park-San Antonio residents
60 dBA
Loudest residential point
Normal conversation an arm’s length away
This map shows modeled outdoor noise across University Park-San Antonio 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 932 University Park-San Antonio residents, or 26.6%, live above that level. By land area, 41.6% of University Park-San Antonio is above 55 dBA.
58.4% below 55 dBA
41.6% above 55 dBA
See how noise in University Park-San Antonio compares to similar-sized neighborhoods.
Noise by Part of University Park-San Antonio
Average noise levels for University Park-San Antonio residents, grouped by direction from the center of University Park-San Antonio. The highest population-weighted average is in southeastern University Park-San Antonio; the lowest is in southwestern University Park-San Antonio, where just 26% of residents live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in the loudest section.
Southeastern University Park-San Antonio
55.3 dBA · Moderate-loud
Quiet office to normal conversation
Southern University Park-San Antonio
54.9 dBA · Moderate-loud
Quiet office to normal conversation
Northwestern University Park-San Antonio
51.9 dBA · Moderate
Quiet office to normal conversation
Northern University Park-San Antonio
51.2 dBA · Moderate
Quiet office to normal conversation
Southwestern University Park-San Antonio
50.9 dBA · Moderate
Quiet office
To the human ear, noise in southeastern University Park-San Antonio sounds about 36% louder than in southwestern University Park-San Antonio, a 4.4 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 State Hwy 151 do you need to be?
State Hwy 151 produces an estimated 71 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
71 dBA
Highway traffic 50 ft away
165 ft
56 dBA
Normal conversation an arm’s length away
330 ft
47 dBA
Quiet office
660 ft
39 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 5% of University Park-San Antonio sits under tree canopy (lighter than most neighborhoods) and roughly 40% 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
San Antonio International (SAT) sits northeast of University Park-San Antonio. 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 University Park-San Antonio, particularly to the southwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across University Park-San Antonio
The bar chart below shows the share of University Park-San Antonio residents in each noise band. About 83% 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 University Park-San Antonio Compares
University Park-San Antonio sits at the quieter end of the spectrum. Below: how University Park-San Antonio's average outdoor noise and share of residents above the EPA threshold compare with Jefferson-Woodlawn Lake, Community Workers Council, Woodlawn Lake, and Cable-Westwood.
Average noise level (dBA)
University Park-San Antonio's 51.2 dBA pop-weighted average is at the quieter end of the spectrum. Texas as a whole averages 50.8 dBA and the U.S. averages 52.0 dBA. Both are lower than University Park-San Antonio because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 26.6% of University Park-San Antonio 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, 41.6% of University Park-San Antonio's footprint sits above 55 dBA, against a Texas average of 22.8% and a national average of 28.1%.
What This Means if You're Moving to University Park-San Antonio
- 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 Hwy 151 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 5% of University Park-San Antonio is under tree cover (lighter 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. San Antonio International's approach paths concentrate aviation noise to the northeast. Neighborhoods to the southwest of downtown show no measurable contribution from the airport.
