City vs city
San Antonio vs San Marcos, TX
San Antonio currently scores 4 points higher overall than San Marcos, with the largest gap in tornado.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality is a current EPA AirNow signal; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
San Antonio: 48/100 · San Marcos: 44/100
San Antonio is 4 points higher.
Flood
San Antonio: 33/100 · San Marcos: 36/100
San Marcos is 3 points higher.
San Antonio: FEMA NFHL flood zones: 13 features intersect this tile.
San Marcos: FEMA NFHL flood zones: 18 features intersect this tile.
Wind
San Antonio: 17/100 · San Marcos: 17/100
No gap.
San Antonio: Wind exposure derived from ingested design wind / climatology tiles.
San Marcos: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
San Antonio: 38/100 · San Marcos: 41/100
San Marcos is 3 points higher.
San Antonio: Lightning exposure derived from ingested climatology tiles.
San Marcos: Lightning exposure derived from ingested climatology tiles.
Tornado
San Antonio: 62/100 · San Marcos: 27/100
San Antonio is 35 points higher.
San Antonio: Tornado risk derived from NOAA SPC historical reports.
San Marcos: Tornado risk derived from NOAA SPC historical reports.
Hail
San Antonio: 100/100 · San Marcos: 100/100
No gap.
San Antonio: Hail risk derived from NOAA SPC historical reports.
San Marcos: Hail risk derived from NOAA SPC historical reports.
Storm surge
San Antonio: Unavailable · San Marcos: Unavailable
A score difference cannot be calculated without both sources.
San Antonio: Storm surge model is not available for this location yet.
San Marcos: Storm surge model is not available for this location yet.
Wildfire
San Antonio: 60/100 · San Marcos: 58/100
San Antonio is 2 points higher.
San Antonio: Wildfire exposure derived from ingested fire potential tiles.
San Marcos: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
San Antonio: 28/100 · San Marcos: 28/100
No gap.
San Antonio: Air quality signal derived from the latest EPA AirNow combined AQI grid.
San Marcos: Air quality signal derived from the latest EPA AirNow combined AQI grid.