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