Costa Mesa, CA Noise Levels
Is Costa Mesa, CA noisy?
Costa Mesa, 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. Aircraft drives that number here, not the other two sources. That figure is sampled at one coordinate, the Census Bureau's own internal point for Costa Mesa, not a street-by-street survey of the whole place.
Costa Mesa'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.
What this means for a house here
Aircraft noise is intermittent and lower-frequency, which is why FAA’s Part 150 program funds whole-envelope sound insulation for homes inside an airport’s own mapped noise contour rather than relying on window replacement alone.
Where Costa Mesa ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, Costa Mesa ranks 1,828, loudest first. About 109,131 people live there, making it the 299th largest place in this dataset.
Your street may differ from Costa Mesa's reading
This page describes Costa Mesa as a whole. If one specific address is what matters, BTS publishes the same underlying map for free.
Behind Costa Mesa's reading
The methodology guide shows exactly how Costa Mesa's reading was built from BTS's tile data. Since aircraft is what's driving this reading, the guide to what actually cuts each kind of noise covers the fix that fits.