City vs city
Houston vs San Marcos, TX
Houston currently scores 4 points higher overall than San Marcos, with the largest gap in hail.
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
Houston: 48/100 · San Marcos: 44/100
Houston is 4 points higher.
Flood
Houston: 40/100 · San Marcos: 36/100
Houston is 4 points higher.
Houston: FEMA NFHL flood zones: 20 features intersect this tile.
San Marcos: FEMA NFHL flood zones: 18 features intersect this tile.
Wind
Houston: 42/100 · San Marcos: 17/100
Houston is 25 points higher.
Houston: Wind exposure derived from ingested design wind / climatology tiles.
San Marcos: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Houston: 71/100 · San Marcos: 41/100
Houston is 30 points higher.
Houston: Lightning exposure derived from ingested climatology tiles.
San Marcos: Lightning exposure derived from ingested climatology tiles.
Tornado
Houston: 50/100 · San Marcos: 27/100
Houston is 23 points higher.
Houston: Tornado risk derived from NOAA SPC historical reports.
San Marcos: Tornado risk derived from NOAA SPC historical reports.
Hail
Houston: 58/100 · San Marcos: 100/100
San Marcos is 42 points higher.
Houston: Hail risk derived from NOAA SPC historical reports.
San Marcos: Hail risk derived from NOAA SPC historical reports.
Storm surge
Houston: Unavailable · San Marcos: Unavailable
A score difference cannot be calculated without both sources.
Houston: Storm surge model is not available for this location yet.
San Marcos: Storm surge model is not available for this location yet.
Wildfire
Houston: 51/100 · San Marcos: 58/100
San Marcos is 7 points higher.
Houston: Wildfire exposure derived from ingested fire potential tiles.
San Marcos: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Houston: 27/100 · San Marcos: 28/100
San Marcos is 1 points higher.
Houston: 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.