City vs city
San Diego vs San Mateo, CA
San Mateo currently scores 4 points higher overall than San Diego, with the largest gap 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
San Diego: 22/100 · San Mateo: 26/100
San Mateo is 4 points higher.
Flood
San Diego: 39/100 · San Mateo: 40/100
San Mateo is 1 points higher.
San Diego: FEMA NFHL flood zones: 14 features intersect this tile.
San Mateo: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
San Diego: 6/100 · San Mateo: 2/100
San Diego is 4 points higher.
San Diego: Wind exposure derived from ingested design wind / climatology tiles.
San Mateo: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
San Diego: 1/100 · San Mateo: 0/100
San Diego is 1 points higher.
San Diego: Lightning exposure derived from ingested climatology tiles.
San Mateo: Lightning exposure derived from ingested climatology tiles.
Tornado
San Diego: 12/100 · San Mateo: 0/100
San Diego is 12 points higher.
San Diego: Tornado risk derived from NOAA SPC historical reports.
San Mateo: Tornado risk derived from NOAA SPC historical reports.
Hail
San Diego: 5/100 · San Mateo: 6/100
San Mateo is 1 points higher.
San Diego: Hail risk derived from NOAA SPC historical reports.
San Mateo: Hail risk derived from NOAA SPC historical reports.
Storm surge
San Diego: Unavailable · San Mateo: Unavailable
A score difference cannot be calculated without both sources.
San Diego: Storm surge model is not available for this location yet.
San Mateo: Storm surge model is not available for this location yet.
Wildfire
San Diego: 69/100 · San Mateo: 59/100
San Diego is 10 points higher.
San Diego: Wildfire exposure derived from ingested fire potential tiles.
San Mateo: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
San Diego: 24/100 · San Mateo: 23/100
San Diego is 1 points higher.
San Diego: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
San Mateo: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.