City vs city
Iowa Falls vs Sioux City, IA
Sioux City currently scores 4 points higher overall than Iowa Falls, 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
Iowa Falls: 35/100 · Sioux City: 39/100
Sioux City is 4 points higher.
Flood
Iowa Falls: 52/100 · Sioux City: 4/100
Iowa Falls is 48 points higher.
Iowa Falls: FEMA NFHL flood zones: 8 features intersect this tile.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Iowa Falls: 18/100 · Sioux City: 20/100
Sioux City is 2 points higher.
Iowa Falls: Wind exposure derived from ingested design wind / climatology tiles.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Iowa Falls: 27/100 · Sioux City: 52/100
Sioux City is 25 points higher.
Iowa Falls: Lightning exposure derived from ingested climatology tiles.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Tornado
Iowa Falls: 4/100 · Sioux City: 38/100
Sioux City is 34 points higher.
Iowa Falls: Tornado risk derived from NOAA SPC historical reports.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Hail
Iowa Falls: 88/100 · Sioux City: 86/100
Iowa Falls is 2 points higher.
Iowa Falls: Hail risk derived from NOAA SPC historical reports.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Iowa Falls: Unavailable · Sioux City: Unavailable
A score difference cannot be calculated without both sources.
Iowa Falls: Storm surge model is not available for this location yet.
Sioux City: Storm surge model is not available for this location yet.
Wildfire
Iowa Falls: 29/100 · Sioux City: 48/100
Sioux City is 19 points higher.
Iowa Falls: Wildfire exposure derived from ingested fire potential tiles.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Iowa Falls: 28/100 · Sioux City: 26/100
Iowa Falls is 2 points higher.
Iowa Falls: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sioux City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.