Limits

Modeled estimates for general information only — not measurements, not a guarantee, and not for legal, medical or real-estate decisions.

What this is

A model estimate of outdoor sound from roads, trains and aircraft. It is not a measurement, and it is not an indoor level.

What to expect

At a single address, the estimate is typically about 6 dB off, higher or lower. Differences of a few dB between two addresses are within that error. Use the map to compare broad situations (on a freeway, on a side street, under a flight path), not to split hairs.

What is missing

Construction, events, nightlife, neighbors and helicopters. A quiet reading does not promise a quiet night.

Blank areas

Blank areas are not modeled yet, not quiet. Colors fade out at the edge of the modeled area. In parks, mountains and desert the colors are a coarse estimate from freeways and major roads only. Land with no freeway or major road within 3 km shows the lowest color; that is an assumption, not a computed level.

Health information is general

Studies find that long-term noise is associated with poorer sleep, annoyance and heart disease across populations. This site cannot tell you what a level means for your own health, and it gives no medical advice. WHO values are health benchmarks, not safe or unsafe lines.

Not for legal or real-estate use

Not for legal, regulatory, appraisal or real-estate disclosure use. Quiet LA does not replace the official airport disclosure notices, environmental reviews or a professional acoustic survey. It makes no claim about any home’s value, safety or livability.

No guarantee

Values can change as data and methods improve, and they may be wrong. Use the site at your own risk and check anything that matters to you with a professional or an on-site survey. See Sources & methods for where the numbers come from.

Spotted a mistake?

A way to report a wrong value is coming soon. Until then, the “Coverage & method” notes in the map list what the model includes and leaves out.