Noise Levels in The Dominion, San Antonio, TX | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across The Dominion
Quiet office to normal conversation
1,041
Residents above the EPA 55 dBA threshold
30% of The Dominion residents
73 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across The Dominion 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.
Overall
Road
Rail
Aviation
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
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 1,041 The Dominion residents, or 30.1%, live above that level. By land area, 26.9% of The Dominion is above 55 dBA.
Average noise levels for The Dominion residents, grouped by direction from the center of The Dominion. Central The Dominion carries the highest population-weighted average; Eastern The Dominion carries the lowest. Just 8% of residents in Eastern The Dominion live in blocks above the EPA's 55 dBA threshold, a third of the share in Central The Dominion.
Central The Dominion
59.5 dBA · Loud
Normal conversation an arm’s length away
32% of people above 55 dBA
QuietLoud
Eastern The Dominion
49.4 dBA · Mostly quiet
Quiet office
8% of people above 55 dBA
QuietLoud
Northern The Dominion
55.3 dBA · Moderate-loud
Quiet office to normal conversation
54% of people above 55 dBA
QuietLoud
Southern The Dominion
49.7 dBA · Mostly quiet
Quiet office
10% of people above 55 dBA
QuietLoud
Central The Dominion sounds about 101% louder than Eastern The Dominion to the human ear, a 10.1 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 US Hwy 87 do you need to be?
US Hwy 87 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
64 dBA
Busy restaurant
330 ft
55 dBA
Quiet office to normal conversation
660 ft
47 dBA
Quiet office
¼ mile
39 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 34% of The Dominion sits under tree canopy (much heavier 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 southeast of The Dominion. 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 The Dominion, particularly to the northwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across The Dominion
The bar chart below shows the share of The Dominion residents in each noise band. About 44% of residents live below the EPA's 55 dBA threshold, and roughly 41% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How The Dominion Compares
The Dominion sits the highest among the peer group. Below: how The Dominion's average outdoor noise and share of residents above the EPA threshold compare with Friends of Friedrich Wilderness Park, Parkwood Maintenance, Churchill Estates, and Encino Park.
Average noise level (dBA)
The Dominion's 55.8 dBA pop-weighted average is the highest among the peer group. Texas as a whole averages 50.8 dBA and the U.S. averages 52.0 dBA. Both are lower than The Dominion because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 30.1% of The Dominion 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, 26.9% of The Dominion'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 The Dominion
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 US Hwy 87 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 34% of The Dominion is under tree cover (much heavier than most neighborhoods), 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. San Antonio International's approach paths concentrate aviation noise to the southeast. Neighborhoods to the northwest of downtown show no measurable contribution from the airport.
Sources & Methodology
The BestNeighborhood noise model is calibrated against nearly one million federal ground-truth measurements across four states. Road noise is computed from segment-level federal traffic data and propagated outward using physics-based acoustic decay, with attenuation rates that depend on the surrounding land cover.
All inputs are published federal datasets. Block-level noise is computed by combining road, rail, and aviation sound sources in the energy domain, the same physics used in professional environmental noise assessments. Read the full methodology.
