City vs city
Cottleville vs O'Fallon, MO
Cottleville currently scores 2 points higher overall than O'Fallon, 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
Cottleville: 48/100 · O'Fallon: 46/100
Cottleville is 2 points higher.
Flood
Cottleville: 46/100 · O'Fallon: 44/100
Cottleville is 2 points higher.
Cottleville: FEMA NFHL flood zones: 13 features intersect this tile.
O'Fallon: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Cottleville: 16/100 · O'Fallon: 16/100
No gap.
Cottleville: Wind exposure derived from ingested design wind / climatology tiles.
O'Fallon: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Cottleville: 45/100 · O'Fallon: 46/100
O'Fallon is 1 points higher.
Cottleville: Lightning exposure derived from ingested climatology tiles.
O'Fallon: Lightning exposure derived from ingested climatology tiles.
Tornado
Cottleville: 69/100 · O'Fallon: 50/100
Cottleville is 19 points higher.
Cottleville: Tornado risk derived from NOAA SPC historical reports.
O'Fallon: Tornado risk derived from NOAA SPC historical reports.
Hail
Cottleville: 100/100 · O'Fallon: 100/100
No gap.
Cottleville: Hail risk derived from NOAA SPC historical reports.
O'Fallon: Hail risk derived from NOAA SPC historical reports.
Storm surge
Cottleville: Unavailable · O'Fallon: Unavailable
A score difference cannot be calculated without both sources.
Cottleville: Storm surge model is not available for this location yet.
O'Fallon: Storm surge model is not available for this location yet.
Wildfire
Cottleville: 33/100 · O'Fallon: 41/100
O'Fallon is 8 points higher.
Cottleville: Wildfire exposure derived from ingested fire potential tiles.
O'Fallon: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Cottleville: 28/100 · O'Fallon: 28/100
No gap.
Cottleville: 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.