Noise Levels in Clay Arsenal, Hartford, CT | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across Clay Arsenal
Quiet office to normal conversation
2,795
Residents above the EPA 55 dBA threshold
47% of Clay Arsenal residents
71 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Clay Arsenal 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 2,795 Clay Arsenal residents, or 46.6%, live above that level. By land area, 57.1% of Clay Arsenal is above 55 dBA.
42.9% below 55 dBA
57.1% above 55 dBA
See how noise in Clay Arsenal compares to similar-sized neighborhoods.
Noise by Part of Clay Arsenal
Average noise levels for Clay Arsenal residents, grouped by direction from the center of Clay Arsenal. The highest population-weighted average is in southern Clay Arsenal; the lowest is in northwestern Clay Arsenal, where just 38% of residents live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in the loudest section.
Southern Clay Arsenal
61.1 dBA · Loud
Busy restaurant
Southwestern Clay Arsenal
61.1 dBA · Loud
Busy restaurant
Northeastern Clay Arsenal
59.6 dBA · Loud
Normal conversation an arm’s length away
Central Clay Arsenal
58.3 dBA · Loud
Normal conversation an arm’s length away
Northwestern Clay Arsenal
53.8 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in southern Clay Arsenal sounds about 66% louder than in northwestern Clay Arsenal, a 7.3 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 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
City bus interior
165 ft
57 dBA
Normal conversation an arm’s length away
330 ft
49 dBA
Quiet office
660 ft
41 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 22% of Clay Arsenal sits under tree canopy (heavier than most neighborhoods) and roughly 50% 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 Clay Arsenal. 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
Bradley International (BDL) sits north of Clay Arsenal. 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 Clay Arsenal, 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 Clay Arsenal
The bar chart below shows the share of Clay Arsenal residents in each noise band. About 47% of residents live below the EPA's 55 dBA threshold, and roughly 9% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Clay Arsenal Compares
Clay Arsenal sits at the quieter end of the spectrum. Below: how Clay Arsenal's average outdoor noise and share of residents above the EPA threshold compare with Upper Albany, South West, Parkville, and Frog Hollow.
Average noise level (dBA)
Clay Arsenal's 55.5 dBA pop-weighted average is at the quieter end of the spectrum. Connecticut as a whole averages 51.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Clay Arsenal because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 46.6% of Clay Arsenal 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, 57.1% of Clay Arsenal's footprint sits above 55 dBA, against a Connecticut average of 27.3% and a national average of 28.1%.
What This Means if You're Moving to Clay Arsenal
- 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 22% of Clay Arsenal is under tree cover (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. Bradley International's approach paths concentrate aviation noise to the north. Neighborhoods to the south of downtown show no measurable contribution from the airport.
