City vs city
Fountain Hills vs Tonto Basin, AZ
Fountain Hills currently scores 9 points higher overall than Tonto Basin, 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
Fountain Hills: 37/100 · Tonto Basin: 28/100
Fountain Hills is 9 points higher.
Flood
Fountain Hills: 73/100 · Tonto Basin: 43/100
Fountain Hills is 30 points higher.
Fountain Hills: FEMA NFHL flood zones: 6 features intersect this tile.
Tonto Basin: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Fountain Hills: 11/100 · Tonto Basin: 11/100
No gap.
Fountain Hills: Wind exposure derived from ingested design wind / climatology tiles.
Tonto Basin: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Fountain Hills: 18/100 · Tonto Basin: 23/100
Tonto Basin is 5 points higher.
Fountain Hills: Lightning exposure derived from ingested climatology tiles.
Tonto Basin: Lightning exposure derived from ingested climatology tiles.
Tornado
Fountain Hills: 0/100 · Tonto Basin: 0/100
No gap.
Fountain Hills: Tornado risk derived from NOAA SPC historical reports.
Tonto Basin: Tornado risk derived from NOAA SPC historical reports.
Hail
Fountain Hills: 19/100 · Tonto Basin: 2/100
Fountain Hills is 17 points higher.
Fountain Hills: Hail risk derived from NOAA SPC historical reports.
Tonto Basin: Hail risk derived from NOAA SPC historical reports.
Storm surge
Fountain Hills: Unavailable · Tonto Basin: Unavailable
A score difference cannot be calculated without both sources.
Fountain Hills: Storm surge model is not available for this location yet.
Tonto Basin: Storm surge model is not available for this location yet.
Wildfire
Fountain Hills: 71/100 · Tonto Basin: 64/100
Fountain Hills is 7 points higher.
Fountain Hills: Wildfire exposure derived from ingested fire potential tiles.
Tonto Basin: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Fountain Hills: 28/100 · Tonto Basin: 22/100
Fountain Hills is 6 points higher.
Fountain Hills: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Tonto Basin: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.