City vs city
East Alton vs Joliet, IL
East Alton currently scores 3 points higher overall than Joliet, 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 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
East Alton: 50/100 · Joliet: 47/100
East Alton is 3 points higher.
Flood
East Alton: 77/100 · Joliet: 44/100
East Alton is 33 points higher.
East Alton: FEMA NFHL flood zones: 5 features intersect this tile.
Joliet: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
East Alton: 16/100 · Joliet: 16/100
No gap.
East Alton: Wind exposure derived from ingested design wind / climatology tiles.
Joliet: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
East Alton: 48/100 · Joliet: 43/100
East Alton is 5 points higher.
East Alton: Lightning exposure derived from ingested climatology tiles.
Joliet: Lightning exposure derived from ingested climatology tiles.
Tornado
East Alton: 46/100 · Joliet: 81/100
Joliet is 35 points higher.
East Alton: Tornado risk derived from NOAA SPC historical reports.
Joliet: Tornado risk derived from NOAA SPC historical reports.
Hail
East Alton: 99/100 · Joliet: 96/100
East Alton is 3 points higher.
East Alton: Hail risk derived from NOAA SPC historical reports.
Joliet: Hail risk derived from NOAA SPC historical reports.
Storm surge
East Alton: Unavailable · Joliet: Unavailable
A score difference cannot be calculated without both sources.
East Alton: Storm surge model is not available for this location yet.
Joliet: Storm surge model is not available for this location yet.
Wildfire
East Alton: 29/100 · Joliet: 21/100
East Alton is 8 points higher.
East Alton: Wildfire exposure derived from ingested fire potential tiles.
Joliet: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
East Alton: 35/100 · Joliet: 28/100
East Alton is 7 points higher.
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.
Joliet: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.