Noise Levels in Dignowity Hill, San Antonio, TX | Find Quiet Neighborhoods With Our Sound Map
55 dBA
Average noise across Dignowity Hill
Quiet office to normal conversation
395
Residents above the EPA 55 dBA threshold
41% of Dignowity Hill residents
78 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Dignowity Hill 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 395 Dignowity Hill residents, or 41.3%, live above that level. By land area, 53.8% of Dignowity Hill is above 55 dBA.
46.2% below 55 dBA
53.8% above 55 dBA
See how noise in Dignowity Hill compares to similar-sized neighborhoods.
Noise by Part of Dignowity Hill
Average noise levels for Dignowity Hill residents, grouped by direction from the center of Dignowity Hill. The highest population-weighted average is in southwestern Dignowity Hill; the lowest is in eastern Dignowity Hill, where just 20% of residents live in blocks above the EPA's 55 dBA threshold, a third of the share in the loudest section.
Southwestern Dignowity Hill
66.7 dBA · Loud
Highway traffic 50 ft away
Northern Dignowity Hill
59.2 dBA · Loud
Normal conversation an arm’s length away
Northeastern Dignowity Hill
58.2 dBA · Loud
Normal conversation an arm’s length away
Central Dignowity Hill
57.5 dBA · Moderate-loud
Normal conversation an arm’s length away
Eastern Dignowity Hill
53.9 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in southwestern Dignowity Hill sounds about 143% louder than in eastern Dignowity Hill, a 12.8 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 281 do you need to be?
US Hwy 281 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
65 dBA
Busy restaurant
330 ft
56 dBA
Normal conversation an arm’s length away
660 ft
48 dBA
Quiet office
¼ mile
40 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 4% of Dignowity Hill sits under tree canopy (much lighter than most neighborhoods) and roughly 52% 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 Dignowity Hill. 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
San Antonio International (SAT) sits north of Dignowity Hill. 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 Dignowity Hill, particularly to the south, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Dignowity Hill
The bar chart below shows the share of Dignowity Hill residents in each noise band. About 55% of residents live below the EPA's 55 dBA threshold, and roughly 8% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Dignowity Hill Compares
Dignowity Hill sits at the quieter end of the spectrum. Below: how Dignowity Hill's average outdoor noise and share of residents above the EPA threshold compare with riverside-san-antonio-san-antonio-tx, coliseum-willow-park-san-antonio-tx, englewood-san-antonio-tx, and stoneleigh-san-antonio-tx.
Average noise level (dBA)
Dignowity Hill's 54.9 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 Dignowity Hill because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 41.3% of Dignowity Hill 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, 53.8% of Dignowity Hill'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 Dignowity Hill
- 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 281 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 4% of Dignowity Hill is under tree cover (much 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 north. Neighborhoods to the south of downtown show no measurable contribution from the airport.
