City vs city
Dayton vs Parma Heights, OH
Dayton and Parma Heights are tied on overall score, with the biggest factor difference 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
Dayton: 45/100 · Parma Heights: 45/100
No gap.
Flood
Dayton: 74/100 · Parma Heights: 67/100
Dayton is 7 points higher.
Dayton: FEMA NFHL flood zones: 9 features intersect this tile.
Parma Heights: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Dayton: 15/100 · Parma Heights: 18/100
Parma Heights is 3 points higher.
Dayton: Wind exposure derived from ingested design wind / climatology tiles.
Parma Heights: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Dayton: 35/100 · Parma Heights: 40/100
Parma Heights is 5 points higher.
Dayton: Lightning exposure derived from ingested climatology tiles.
Parma Heights: Lightning exposure derived from ingested climatology tiles.
Tornado
Dayton: 46/100 · Parma Heights: 0/100
Dayton is 46 points higher.
Dayton: Tornado risk derived from NOAA SPC historical reports.
Parma Heights: Tornado risk derived from NOAA SPC historical reports.
Hail
Dayton: 100/100 · Parma Heights: 100/100
No gap.
Dayton: Hail risk derived from NOAA SPC historical reports.
Parma Heights: Hail risk derived from NOAA SPC historical reports.
Storm surge
Dayton: Unavailable · Parma Heights: Unavailable
A score difference cannot be calculated without both sources.
Dayton: Storm surge model is not available for this location yet.
Parma Heights: Storm surge model is not available for this location yet.
Wildfire
Dayton: 7/100 · Parma Heights: 10/100
Parma Heights is 3 points higher.
Dayton: Wildfire exposure derived from ingested fire potential tiles.
Parma Heights: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Dayton: 35/100 · Parma Heights: 34/100
Dayton is 1 points higher.
Dayton: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Parma Heights: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.