Noise Levels in Hobart Circle Historic District, Troy, OH | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across Hobart Circle Historic District
Normal conversation an arm’s length away
1,943
Residents above the EPA 55 dBA threshold
54% of Hobart Circle Historic District residents
90 dBA
Loudest residential point
Lawnmower at 1 m
This map shows modeled outdoor noise across Hobart Circle Historic District 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 1,943 Hobart Circle Historic District residents, or 54.3%, live above that level. By land area, 54.2% of Hobart Circle Historic District is above 55 dBA.
Average noise levels for Hobart Circle Historic District residents, grouped by direction from the center of Hobart Circle Historic District. Southern Hobart Circle Historic District carries the highest population-weighted average; Northern Hobart Circle Historic District carries the lowest. Just 57% of residents in Northern Hobart Circle Historic District live in blocks above the EPA's 55 dBA threshold, roughly the same as the share in Southern Hobart Circle Historic District.
Central Hobart Circle Historic District
56.4 dBA · Moderate-loud
Normal conversation an arm’s length away
58% of people above 55 dBA
QuietLoud
Eastern Hobart Circle Historic District
56.0 dBA · Moderate-loud
Quiet office to normal conversation
50% of people above 55 dBA
QuietLoud
Northern Hobart Circle Historic District
54.6 dBA · Moderate-loud
Quiet office to normal conversation
57% of people above 55 dBA
QuietLoud
Southern Hobart Circle Historic District
61.0 dBA · Loud
Normal conversation an arm’s length away
62% of people above 55 dBA
QuietLoud
Western Hobart Circle Historic District
55.4 dBA · Moderate-loud
Quiet office to normal conversation
45% of people above 55 dBA
QuietLoud
Southern Hobart Circle Historic District sounds about 56% louder than Northern Hobart Circle Historic District to the human ear, a 6.4 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 do you need to be?
produces an estimated 90 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 quiet office to normal conversation.
At source
90 dBA
Lawnmower at 1 m
165 ft
76 dBA
City bus interior
330 ft
68 dBA
Highway traffic 50 ft away
660 ft
60 dBA
Normal conversation an arm’s length away
¼ mile
52 dBA
Quiet office to normal conversation
½ mile
44 dBA
Quiet suburban street at night
Calculated from the model's calibrated attenuation formula. About 14% of Hobart Circle Historic District sits under tree canopy (about average for neighborhoods) and roughly 47% 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 Hobart Circle Historic District. 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 Hobart Circle Historic District
The bar chart below shows the share of Hobart Circle Historic District residents in each noise band. About 41% 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 Hobart Circle Historic District Compares
Hobart Circle Historic District sits at the louder end of the spectrum. Below: how Hobart Circle Historic District's average outdoor noise and share of residents above the EPA threshold compare with old-tippecanoe-historic-district-tipp-city-oh, Pheasant Hill, Hillcrest, and Sidney Walnut Avenue Historic District.
Average noise level (dBA)
Hobart Circle Historic District's 56.4 dBA pop-weighted average is at the louder end of the spectrum. Ohio as a whole averages 51.1 dBA and the U.S. averages 52.0 dBA. Both are lower than Hobart Circle Historic District because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 54.3% of Hobart Circle Historic District 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, 54.2% of Hobart Circle Historic District's footprint sits above 55 dBA, against a Ohio average of 26.4% and a national average of 28.1%.
What This Means if You're Moving to Hobart Circle Historic District
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 14% of Hobart Circle Historic District is under tree cover (about average for 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.
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.
