Noise Levels in South Tucson, AZ | Find Quiet Neighborhoods With Our Sound Map
57 dBA
Average noise across South Tucson
Normal conversation an arm’s length away
2,450
Residents above the EPA 55 dBA threshold
54% of South Tucson residents
82 dBA
Loudest residential point
Food blender at arm’s length
This map shows modeled outdoor noise across South Tucson 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 2,450 South Tucson residents, or 54.4%, live above that level. By land area, 58.3% of South Tucson is above 55 dBA.
Average noise levels for South Tucson residents, grouped by direction from the center of South Tucson. Southern South Tucson carries the highest population-weighted average; Central South Tucson carries the lowest. Just 40% of residents in Central South Tucson live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in Southern South Tucson.
Central South Tucson
54.6 dBA · Moderate-loud
Quiet office to normal conversation
40% of people above 55 dBA
QuietLoud
Eastern South Tucson
54.7 dBA · Moderate-loud
Quiet office to normal conversation
45% of people above 55 dBA
QuietLoud
Northern South Tucson
55.9 dBA · Moderate-loud
Quiet office to normal conversation
72% of people above 55 dBA
QuietLoud
Southern South Tucson
65.8 dBA · Loud
Busy restaurant
72% of people above 55 dBA
QuietLoud
Western South Tucson
60.0 dBA · Loud
Normal conversation an arm’s length away
77% of people above 55 dBA
QuietLoud
Southern South Tucson sounds about 117% louder than Central South Tucson to the human ear, a 11.2 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 ~~i~010~~~~~~~~~~~~~~~~~~~~~~~0~ do you need to be?
~~i~010~~~~~~~~~~~~~~~~~~~~~~~0~ produces an estimated 74 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
74 dBA
City bus interior
165 ft
59 dBA
Normal conversation an arm’s length away
330 ft
51 dBA
Quiet office
660 ft
42 dBA
Quiet suburban street at night
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 0% of South Tucson sits under tree canopy (much lighter than most cities) 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 South Tucson. 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
Tucson International (TUS) sits south of South Tucson. 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 55 dBA on the map's Overall layer. Blocks on the opposite side of South Tucson, particularly to the north, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across South Tucson
The bar chart below shows the share of South Tucson residents in each noise band. About 39% of residents live below the EPA's 55 dBA threshold, and roughly 25% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How South Tucson Compares
South Tucson sits the highest among the peer group. Below: how South Tucson's average outdoor noise and share of residents above the EPA threshold compare with Three Points, Catalina, Oracle, and Avra Valley.
Average noise level (dBA)
South Tucson's 56.9 dBA pop-weighted average is the highest among the peer group. Arizona as a whole averages 53.0 dBA and the U.S. averages 52.0 dBA. Both are lower than South Tucson because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 54.4% of South Tucson residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's more than any of its peer group. Measured by land area instead, 58.3% of South Tucson's footprint sits above 55 dBA, against a Arizona average of 28.3% and a national average of 28.1%.
What This Means if You're Moving to South Tucson
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 ~~i~010~~~~~~~~~~~~~~~~~~~~~~~0~ 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 0% of South Tucson is under tree cover (much lighter than most cities), 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. Tucson International's approach paths concentrate aviation noise to the south. Neighborhoods to the north 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.
