San Jose, CA Noise Levels
Noise levels in San Jose, CA
San Jose, CA doesn't clear BTS's 45 dB(A) measurement floor on any of the three transportation sources it tracks, road, rail or aircraft.
That's the reading at San Jose's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
How San Jose compares nationally
San Jose, CA sits among 8,515 US places this dataset covers with no measurable transportation noise, out of 12,137 places checked overall. About 997,368 people live there, making it the 14th largest place in this dataset.
Checking one address in San Jose
San Jose's figure above is a town-wide reading. For one exact address, BTS's own map is the free, authoritative source.
Where San Jose's figures come from
Every dB(A) figure on this page traces to a named BTS dataset, documented in the methodology guide. Curious why San Jose reads as quiet? The explanation of what a quiet result actually means covers it.