Grand Terrace, CA Noise Levels
Grand Terrace, CA: what the federal noise map shows
Grand Terrace, CA reads 47.5 dB(A) on BTS's 24-hour average, inside HUD's "Acceptable" noise zone, 65 dB(A) day-night average or below under 24 CFR 51.104, the federal government's own line for building housing with no extra sound attenuation required. That's the reading at Grand Terrace's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Grand Terrace's noise, by source
Each of the three transportation modes gets its own model from BTS; the combined figure above is what they add up to.
Where Grand Terrace ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, Grand Terrace ranks 2,246, loudest first. By population, it ranks 2,658 of the 12,137 places in this dataset, home to about 12,979 people.
Your street may differ from Grand Terrace's reading
For a single house or lot in Grand Terrace rather than the town-wide figure above, BTS's own map is the same free source, queried directly.
More on how this number was built
For exactly which federal dataset feeds Grand Terrace's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Grand Terrace.