How Loud Is San Antonio, TX?
San Antonio International sits inside the 410 Loop just eight miles from downtown, so North Side neighborhoods like Alamo Heights hear regular arrivals. I-35 through the city is a major freight trucking corridor between Mexico and the Midwest, running louder than its size suggests, especially at night.
San Antonio Noise Map
The map below combines two data sources: the official U.S. DOT National Transportation Noise Map (modeled 24-hour average road, rail, and aviation noise — the colored bands) and real decibel readings measured by DecibelMap users (the dots). Drag and zoom to explore any neighborhood.
Colored bands: modeled traffic noise, quieter → louder (yellow 45 dB → orange → red → pink → purple → blue 90+ dB). Source: U.S. DOT Bureau of Transportation Statistics, 2022. Dots: crowdsourced readings.
Loading live readings for San Antonio…
🎤 Measure Noise in San AntonioOpen the full map — measure your street in 5 seconds
What Makes San Antonio Loud
✈️
San Antonio International (SAT)
Aircraft arrivals and departures create corridors of elevated noise — check the purple/blue bands on the map.
🛣️
Major corridors: I-410 Loop, I-35, I-10, US-281
Highway noise typically reaches 65–75 dB within a block of the roadway and stays audible for a half mile or more.
🚂
Rail
Union Pacific freight lines through the near East and South sides.
Noise Levels Reference
| Environment | Typical dB | What It Means |
|---|
| Quiet residential | 30–45 dB | Birdsong and leaves — ideal for sleep |
| Suburban street | 45–55 dB | Occasional cars, generally calm |
| Moderate urban | 55–65 dB | Steady background hum |
| Busy road | 65–75 dB | Raised-voice territory |
| Highway / flight path | 75–85+ dB | Constant stress, health risk over time |
The WHO recommends under 40 dB in bedrooms for healthy sleep. If a street reads above 60 dB with windows open, expect to rely on closed windows, white noise, or earplugs.
Check a Specific Address in San Antonio
2
Search the address
Type any street address in the search bar. Check the colored noise bands and nearby readings.
3
Measure it yourself
On site, tap the 🎤 button — 5 seconds later your reading is pinned to the map and helps the next person.
Common Questions
How loud is San Antonio?
Noise levels in San Antonio vary widely by neighborhood. Streets near I-410 Loop, I-35, I-10 typically measure 60–75 dB, while residential streets away from major corridors are usually 40–55 dB. Use the interactive map above to see modeled transportation noise for any block in San Antonio, plus real crowdsourced decibel readings.
What are the loudest areas in San Antonio, TX?
The loudest areas of San Antonio are generally along the major highway corridors (I-410 Loop, I-35, I-10) and under the flight paths serving San Antonio International (SAT). San Antonio International sits inside the 410 Loop just eight miles from downtown, so North Side neighborhoods like Alamo Heights hear regular arrivals.
What is a good noise level for an apartment in San Antonio?
The WHO recommends under 40 dB inside bedrooms for healthy sleep. When checking an apartment, aim for a street reading below 60 dB with windows open — quieter than that, closed windows can usually get interiors into the sleepable range. Visit at rush hour and late evening before signing a lease.
How can I measure noise levels in San Antonio?
Open decibelmap.com on your phone at any location in San Antonio, tap the microphone button, and hold still for 5 seconds. The reading is pinned to your GPS location on the global map. No app download or signup needed, and no audio is recorded — only the decibel number.
Nearby Cities
Guides
🗺️ Explore the San Antonio Noise MapFree · no signup · no audio recorded