Noise Levels in Kalihi Valley, Honolulu, HI | Find Quiet Neighborhoods With Our Sound Map

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 11,784 Kalihi Valley residents, or 61.3%, live above that level. By land area, 65.2% of Kalihi Valley is above 55 dBA.

See how noise in Kalihi Valley compares to similar-sized neighborhoods.

Noise by Part of Kalihi Valley

Average noise levels for Kalihi Valley residents, grouped by direction from the center of Kalihi Valley. The highest population-weighted average is in southwestern Kalihi Valley; the lowest is in eastern Kalihi Valley, where just 19% of residents live in blocks above the EPA's 55 dBA threshold, a third of the share in the loudest section.

To the human ear, noise in southwestern Kalihi Valley sounds about 297% louder than in eastern Kalihi Valley, a 19.9 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.

Airport Noise

Daniel K Inouye International (HNL) sits southwest of Kalihi Valley. The U.S. Department of Transportation measures aviation noise around this airport directly, 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 75 dBA on the map's Overall layer. Blocks on the opposite side of Kalihi Valley, particularly to the northeast, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.

How Noise Is Distributed Across Kalihi Valley

The bar chart below shows the share of Kalihi Valley residents in each noise band. About 21% of residents live below the EPA's 55 dBA threshold, and roughly 36% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.

How Kalihi Valley Compares

Kalihi Valley sits at the louder end of the spectrum. Below: how Kalihi Valley's average outdoor noise and share of residents above the EPA threshold compare with Liliha-Kapalama, Manoa, Waikiki, and Diamond Head-Kapahulu-St Louis.

Average noise level (dBA)

Kalihi Valley's 59.7 dBA pop-weighted average is at the louder end of the spectrum. Hawaii as a whole averages 54.8 dBA and the U.S. averages 52.0 dBA. Both are lower than Kalihi Valley because most of either area is rural land away from major roads.

Share of residents above 55 dBA

About 61.3% of Kalihi Valley 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, 65.2% of Kalihi Valley's footprint sits above 55 dBA, against a Hawaii average of 34.4% and a national average of 28.1%.

What This Means if You're Moving to Kalihi Valley

• 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 Kalihi St 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 Kalihi Valley is under tree cover (about average for neighborhoods), and the dominant land cover is . 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. Daniel K Inouye International's approach paths concentrate aviation noise to the southwest. Neighborhoods to the northeast of downtown show no measurable contribution from the airport.

Sources & Methodology