City vs city
Marion vs Sioux Falls, SD
Sioux Falls currently scores 9 points higher overall than Marion, with the largest gap in hail.
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
Marion: 41/100 · Sioux Falls: 50/100
Sioux Falls is 9 points higher.
Flood
Marion: 64/100 · Sioux Falls: 52/100
Marion is 12 points higher.
Marion: FEMA NFHL flood zones: 16 features intersect this tile.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Marion: 21/100 · Sioux Falls: 20/100
Marion is 1 points higher.
Marion: Wind exposure derived from ingested design wind / climatology tiles.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Marion: 43/100 · Sioux Falls: 46/100
Sioux Falls is 3 points higher.
Marion: Lightning exposure derived from ingested climatology tiles.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Marion: 31/100 · Sioux Falls: 58/100
Sioux Falls is 27 points higher.
Marion: Tornado risk derived from NOAA SPC historical reports.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Marion: 66/100 · Sioux Falls: 100/100
Sioux Falls is 34 points higher.
Marion: Hail risk derived from NOAA SPC historical reports.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Marion: Unavailable · Sioux Falls: Unavailable
A score difference cannot be calculated without both sources.
Marion: Storm surge model is not available for this location yet.
Sioux Falls: Storm surge model is not available for this location yet.
Wildfire
Marion: 44/100 · Sioux Falls: 51/100
Sioux Falls is 7 points higher.
Marion: Wildfire exposure derived from ingested fire potential tiles.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Marion: 21/100 · Sioux Falls: 21/100
No gap.
Marion: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Sioux Falls: Air quality signal derived from the latest EPA AirNow combined AQI grid.