City vs city
Millbrae vs San Mateo, CA
San Mateo currently scores 5 points higher overall than Millbrae, 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
Millbrae: 21/100 · San Mateo: 26/100
San Mateo is 5 points higher.
Flood
Millbrae: 28/100 · San Mateo: 40/100
San Mateo is 12 points higher.
Millbrae: FEMA NFHL flood zones: 4 features intersect this tile.
San Mateo: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Millbrae: 2/100 · San Mateo: 2/100
No gap.
Millbrae: Wind exposure derived from ingested design wind / climatology tiles.
San Mateo: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Millbrae: 0/100 · San Mateo: 0/100
No gap.
Millbrae: Lightning exposure derived from ingested climatology tiles.
San Mateo: Lightning exposure derived from ingested climatology tiles.
Tornado
Millbrae: 0/100 · San Mateo: 0/100
No gap.
Millbrae: Tornado risk derived from NOAA SPC historical reports.
San Mateo: Tornado risk derived from NOAA SPC historical reports.
Hail
Millbrae: 1/100 · San Mateo: 6/100
San Mateo is 5 points higher.
Millbrae: Hail risk derived from NOAA SPC historical reports.
San Mateo: Hail risk derived from NOAA SPC historical reports.
Storm surge
Millbrae: Unavailable · San Mateo: Unavailable
A score difference cannot be calculated without both sources.
Millbrae: Storm surge model is not available for this location yet.
San Mateo: Storm surge model is not available for this location yet.
Wildfire
Millbrae: 48/100 · San Mateo: 59/100
San Mateo is 11 points higher.
Millbrae: Wildfire exposure derived from ingested fire potential tiles.
San Mateo: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Millbrae: 24/100 · San Mateo: 23/100
Millbrae is 1 points higher.
Millbrae: 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.