City vs city
Riverdale vs South Holland, IL
Riverdale currently scores 1 points higher overall than South Holland, 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
Riverdale: 42/100 · South Holland: 41/100
Riverdale is 1 points higher.
Flood
Riverdale: 43/100 · South Holland: 46/100
South Holland is 3 points higher.
Riverdale: FEMA NFHL flood zones: 6 features intersect this tile.
South Holland: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Riverdale: 16/100 · South Holland: 16/100
No gap.
Riverdale: Wind exposure derived from ingested design wind / climatology tiles.
South Holland: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Riverdale: 36/100 · South Holland: 38/100
South Holland is 2 points higher.
Riverdale: Lightning exposure derived from ingested climatology tiles.
South Holland: Lightning exposure derived from ingested climatology tiles.
Tornado
Riverdale: 0/100 · South Holland: 50/100
South Holland is 50 points higher.
Riverdale: Tornado risk derived from NOAA SPC historical reports.
South Holland: Tornado risk derived from NOAA SPC historical reports.
Hail
Riverdale: 81/100 · South Holland: 66/100
Riverdale is 15 points higher.
Riverdale: Hail risk derived from NOAA SPC historical reports.
South Holland: Hail risk derived from NOAA SPC historical reports.
Storm surge
Riverdale: Unavailable · South Holland: Unavailable
A score difference cannot be calculated without both sources.
Riverdale: Storm surge model is not available for this location yet.
South Holland: Storm surge model is not available for this location yet.
Wildfire
Riverdale: 44/100 · South Holland: 42/100
Riverdale is 2 points higher.
Riverdale: Wildfire exposure derived from ingested fire potential tiles.
South Holland: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Riverdale: 32/100 · South Holland: 30/100
Riverdale is 2 points higher.
Riverdale: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
South Holland: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.