City vs city
Alton vs Aurora, IL
Alton and Aurora are tied on overall score, with the biggest factor difference 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 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
Alton: 34/100 · Aurora: 34/100
No gap.
Flood
Alton: 0/100 · Aurora: 39/100
Aurora is 39 points higher.
Alton: FEMA NFHL flood zones: 0 features intersect this tile.
Aurora: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Alton: 16/100 · Aurora: 16/100
No gap.
Alton: Wind exposure derived from ingested design wind / climatology tiles.
Aurora: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alton: 53/100 · Aurora: 43/100
Alton is 10 points higher.
Alton: Lightning exposure derived from ingested climatology tiles.
Aurora: Lightning exposure derived from ingested climatology tiles.
Tornado
Alton: 27/100 · Aurora: 8/100
Alton is 19 points higher.
Alton: Tornado risk derived from NOAA SPC historical reports.
Aurora: Tornado risk derived from NOAA SPC historical reports.
Hail
Alton: 91/100 · Aurora: 90/100
Alton is 1 points higher.
Alton: Hail risk derived from NOAA SPC historical reports.
Aurora: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alton: Unavailable · Aurora: Unavailable
A score difference cannot be calculated without both sources.
Alton: Storm surge model is not available for this location yet.
Aurora: Storm surge model is not available for this location yet.
Wildfire
Alton: 16/100 · Aurora: 14/100
Alton is 2 points higher.
Alton: Wildfire exposure derived from ingested fire potential tiles.
Aurora: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Alton: 35/100 · Aurora: 29/100
Alton is 6 points higher.
Alton: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Aurora: Air quality signal derived from the latest EPA AirNow combined AQI grid.