City vs city
Chicago vs East Alton, IL
East Alton currently scores 10 points higher overall than Chicago, with the largest gap 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 uses an ingested EPA AirNow snapshot and may not reflect current conditions; 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
Chicago: 40/100 · East Alton: 50/100
East Alton is 10 points higher.
Flood
Chicago: 44/100 · East Alton: 77/100
East Alton is 33 points higher.
Chicago: FEMA NFHL flood zones: 10 features intersect this tile.
East Alton: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Chicago: 16/100 · East Alton: 16/100
No gap.
Chicago: Wind exposure derived from ingested design wind / climatology tiles.
East Alton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chicago: 35/100 · East Alton: 48/100
East Alton is 13 points higher.
Chicago: Lightning exposure derived from ingested climatology tiles.
East Alton: Lightning exposure derived from ingested climatology tiles.
Tornado
Chicago: 27/100 · East Alton: 46/100
East Alton is 19 points higher.
Chicago: Tornado risk derived from NOAA SPC historical reports.
East Alton: Tornado risk derived from NOAA SPC historical reports.
Hail
Chicago: 100/100 · East Alton: 99/100
Chicago is 1 points higher.
Chicago: Hail risk derived from NOAA SPC historical reports.
East Alton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chicago: Unavailable · East Alton: Unavailable
A score difference cannot be calculated without both sources.
Chicago: Storm surge model is not available for this location yet.
East Alton: Storm surge model is not available for this location yet.
Wildfire
Chicago: 27/100 · East Alton: 29/100
East Alton is 2 points higher.
Chicago: Wildfire exposure derived from ingested fire potential tiles.
East Alton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Chicago: 28/100 · East Alton: 35/100
East Alton is 7 points higher.
Chicago: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
East Alton: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.