Noise Levels in Knightsville, Cranston, RI | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across Knightsville
Quiet office to normal conversation
1,238
Residents above the EPA 55 dBA threshold
51% of Knightsville residents
66 dBA
Loudest residential point
Highway traffic 50 ft away
This map shows modeled outdoor noise across Knightsville 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 1,238 Knightsville residents, or 50.8%, live above that level. By land area, 47.0% of Knightsville is above 55 dBA.
53.0% below 55 dBA
47.0% above 55 dBA
See how noise in Knightsville compares to similar-sized neighborhoods.
Noise by Part of Knightsville
Average noise levels for Knightsville residents, grouped by direction from the center of Knightsville. The highest population-weighted average is in western Knightsville; the lowest is in southern Knightsville, where just 41% of residents live in blocks above the EPA's 55 dBA threshold, roughly the same as the share in the loudest section.
Western Knightsville
56.5 dBA · Moderate-loud
Normal conversation an arm’s length away
Northeastern Knightsville
56.3 dBA · Moderate-loud
Normal conversation an arm’s length away
Southeastern Knightsville
55.5 dBA · Moderate-loud
Quiet office to normal conversation
Central Knightsville
54.9 dBA · Moderate-loud
Quiet office to normal conversation
Southern Knightsville
54.7 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in western Knightsville sounds about 13% louder than in southern Knightsville, a 1.8 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 do you need to be?
produces an estimated 66 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
66 dBA
Highway traffic 50 ft away
165 ft
53 dBA
Quiet office to normal conversation
330 ft
45 dBA
Quiet suburban street at night
660 ft
37 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 21% of Knightsville sits under tree canopy (heavier than most neighborhoods) and roughly 57% 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
Rhode Island Tf Green International (PVD) sits south of Knightsville. 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 Knightsville, 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 Knightsville
The bar chart below shows the share of Knightsville residents in each noise band. About 44% of residents live below the EPA's 55 dBA threshold, and roughly 18% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Knightsville Compares
Knightsville sits at the louder end of the spectrum. Below: how Knightsville's average outdoor noise and share of residents above the EPA threshold compare with meshanticut-cranston-ri, thornton-cranston-ri, spring-green-warwick-ri, and norwood-warwick-ri.
Average noise level (dBA)
Knightsville's 56.0 dBA pop-weighted average is at the louder end of the spectrum. Rhode Island as a whole averages 53.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Knightsville because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 50.8% of Knightsville 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, 47.0% of Knightsville's footprint sits above 55 dBA, against a Rhode Island average of 36.6% and a national average of 28.1%.
What This Means if You're Moving to Knightsville
- 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 21% of Knightsville 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. Rhode Island Tf Green International's approach paths concentrate aviation noise to the south. Neighborhoods to the north of downtown show no measurable contribution from the airport.
