Sierra Madre, CA Noise Levels
How loud is Sierra Madre, CA?
None of the three transportation sources BTS models, road, rail or aircraft, register above 45 dB(A) at Sierra Madre, CA. That figure is sampled at one coordinate, the Census Bureau's own internal point for Sierra Madre, not a street-by-street survey of the whole place.
How Sierra Madre compares nationally
Sierra Madre is one of 8,515 places in this dataset with no measurable transportation noise at all, too quiet to rank on loudness. Population is about 10,775, 3,033th largest of the 12,137 places covered here.
Checking one address in Sierra Madre
Nothing here substitutes for checking one address in Sierra Madre directly, and BTS's own map lets anyone do that at no cost.
Sierra Madre's number isn't a one-off calculation, it comes from the same method covered in the methodology guide. See the why New York City shows up quiet here too for why a real place can show no reading at all.