City vs city
Alton vs Round Lake Beach, IL
Round Lake Beach currently scores 5 points higher overall than Alton, 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 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 · Round Lake Beach: 39/100
Round Lake Beach is 5 points higher.
Flood
Alton: 0/100 · Round Lake Beach: 48/100
Round Lake Beach is 48 points higher.
Alton: FEMA NFHL flood zones: 0 features intersect this tile.
Round Lake Beach: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Alton: 16/100 · Round Lake Beach: 15/100
Alton is 1 points higher.
Alton: Wind exposure derived from ingested design wind / climatology tiles.
Round Lake Beach: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alton: 53/100 · Round Lake Beach: 57/100
Round Lake Beach is 4 points higher.
Alton: Lightning exposure derived from ingested climatology tiles.
Round Lake Beach: Lightning exposure derived from ingested climatology tiles.
Tornado
Alton: 27/100 · Round Lake Beach: 38/100
Round Lake Beach is 11 points higher.
Alton: Tornado risk derived from NOAA SPC historical reports.
Round Lake Beach: Tornado risk derived from NOAA SPC historical reports.
Hail
Alton: 91/100 · Round Lake Beach: 57/100
Alton is 34 points higher.
Alton: Hail risk derived from NOAA SPC historical reports.
Round Lake Beach: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alton: Unavailable · Round Lake Beach: Unavailable
A score difference cannot be calculated without both sources.
Alton: Storm surge model is not available for this location yet.
Round Lake Beach: Storm surge model is not available for this location yet.
Wildfire
Alton: 16/100 · Round Lake Beach: 36/100
Round Lake Beach is 20 points higher.
Alton: Wildfire exposure derived from ingested fire potential tiles.
Round Lake Beach: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Alton: 35/100 · Round Lake Beach: 22/100
Alton is 13 points higher.
Alton: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Round Lake Beach: Air quality signal derived from the latest EPA AirNow combined AQI grid.
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