City vs city
Foster City vs Hayward, CA
Foster City currently scores 5 points higher overall than Hayward, 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
Foster City: 28/100 · Hayward: 23/100
Foster City is 5 points higher.
Flood
Foster City: 56/100 · Hayward: 30/100
Foster City is 26 points higher.
Foster City: FEMA NFHL flood zones: 21 features intersect this tile.
Hayward: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Foster City: 2/100 · Hayward: 2/100
No gap.
Foster City: Wind exposure derived from ingested design wind / climatology tiles.
Hayward: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Foster City: 0/100 · Hayward: 0/100
No gap.
Foster City: Lightning exposure derived from ingested climatology tiles.
Hayward: Lightning exposure derived from ingested climatology tiles.
Tornado
Foster City: 0/100 · Hayward: 0/100
No gap.
Foster City: Tornado risk derived from NOAA SPC historical reports.
Hayward: Tornado risk derived from NOAA SPC historical reports.
Hail
Foster City: 5/100 · Hayward: 1/100
Foster City is 4 points higher.
Foster City: Hail risk derived from NOAA SPC historical reports.
Hayward: Hail risk derived from NOAA SPC historical reports.
Storm surge
Foster City: Unavailable · Hayward: Unavailable
A score difference cannot be calculated without both sources.
Foster City: Storm surge model is not available for this location yet.
Hayward: Storm surge model is not available for this location yet.
Wildfire
Foster City: 53/100 · Hayward: 58/100
Hayward is 5 points higher.
Foster City: Wildfire exposure derived from ingested fire potential tiles.
Hayward: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Foster City: 22/100 · Hayward: 24/100
Hayward is 2 points higher.
Foster 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.
Hayward: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.