City vs city
Affton vs St. Louis, MO
Affton currently scores 1 points higher overall than St. Louis, with the largest gap in wildfire.
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
Affton: 39/100 · St. Louis: 38/100
Affton is 1 points higher.
Flood
Affton: 32/100 · St. Louis: 32/100
No gap.
Affton: FEMA NFHL flood zones: 3 features intersect this tile.
St. Louis: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Affton: 16/100 · St. Louis: 16/100
No gap.
Affton: Wind exposure derived from ingested design wind / climatology tiles.
St. Louis: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Affton: 41/100 · St. Louis: 39/100
Affton is 2 points higher.
Affton: Lightning exposure derived from ingested climatology tiles.
St. Louis: Lightning exposure derived from ingested climatology tiles.
Tornado
Affton: 12/100 · St. Louis: 15/100
St. Louis is 3 points higher.
Affton: Tornado risk derived from NOAA SPC historical reports.
St. Louis: Tornado risk derived from NOAA SPC historical reports.
Hail
Affton: 100/100 · St. Louis: 100/100
No gap.
Affton: Hail risk derived from NOAA SPC historical reports.
St. Louis: Hail risk derived from NOAA SPC historical reports.
Storm surge
Affton: Unavailable · St. Louis: Unavailable
A score difference cannot be calculated without both sources.
Affton: Storm surge model is not available for this location yet.
St. Louis: Storm surge model is not available for this location yet.
Wildfire
Affton: 44/100 · St. Louis: 38/100
Affton is 6 points higher.
Affton: Wildfire exposure derived from ingested fire potential tiles.
St. Louis: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Affton: 27/100 · St. Louis: 27/100
No gap.
Affton: Air quality signal derived from the latest EPA AirNow combined AQI grid.
St. Louis: Air quality signal derived from the latest EPA AirNow combined AQI grid.