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City vs city
O'Fallon vs Chicago, IL
O'Fallon and Chicago are tied on overall score, with the biggest factor difference in tornado.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Overall
O'Fallon: 40/100 · Chicago: 40/100
No gap.
Flood
O'Fallon: 0/100 · Chicago: 44/100
Chicago is 44 points higher.
Wind
O'Fallon: 16/100 · Chicago: 16/100
No gap.
Lightning
O'Fallon: 35/100 · Chicago: 35/100
No gap.
Tornado
O'Fallon: 76/100 · Chicago: 28/100
O'Fallon is 48 points higher.
Hail
O'Fallon: 100/100 · Chicago: 100/100
No gap.
Storm surge
O'Fallon: 0/100 · Chicago: 0/100
No gap.