City vs city
Lake St. Louis vs O'Fallon, MO
Lake St. Louis and O'Fallon are tied on overall score, with the biggest factor difference in flood.
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
Lake St. Louis: 46/100 · O'Fallon: 46/100
No gap.
Flood
Lake St. Louis: 44/100 · O'Fallon: 44/100
No gap.
Lake St. Louis: FEMA NFHL flood zones: 6 features intersect this tile.
O'Fallon: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Lake St. Louis: 16/100 · O'Fallon: 16/100
No gap.
Lake St. Louis: Wind exposure derived from ingested design wind / climatology tiles.
O'Fallon: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Lake St. Louis: 46/100 · O'Fallon: 46/100
No gap.
Lake St. Louis: Lightning exposure derived from ingested climatology tiles.
O'Fallon: Lightning exposure derived from ingested climatology tiles.
Tornado
Lake St. Louis: 50/100 · O'Fallon: 50/100
No gap.
Lake St. Louis: Tornado risk derived from NOAA SPC historical reports.
O'Fallon: Tornado risk derived from NOAA SPC historical reports.
Hail
Lake St. Louis: 100/100 · O'Fallon: 100/100
No gap.
Lake St. Louis: Hail risk derived from NOAA SPC historical reports.
O'Fallon: Hail risk derived from NOAA SPC historical reports.
Storm surge
Lake St. Louis: Unavailable · O'Fallon: Unavailable
A score difference cannot be calculated without both sources.
Lake St. Louis: Storm surge model is not available for this location yet.
O'Fallon: Storm surge model is not available for this location yet.
Wildfire
Lake St. Louis: 41/100 · O'Fallon: 41/100
No gap.
Lake St. Louis: Wildfire exposure derived from ingested fire potential tiles.
O'Fallon: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Lake St. Louis: 28/100 · O'Fallon: 28/100
No gap.
Lake St. Louis: Air quality signal derived from the latest EPA AirNow combined AQI grid.
O'Fallon: Air quality signal derived from the latest EPA AirNow combined AQI grid.