City vs city
Costa Mesa vs San Diego, CA
Costa Mesa currently scores 9 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
Costa Mesa: 31/100 · San Diego: 22/100
Costa Mesa is 9 points higher.
Flood
Costa Mesa: 33/100 · San Diego: 39/100
San Diego is 6 points higher.
Costa Mesa: FEMA NFHL flood zones: 15 features intersect this tile.
San Diego: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Costa Mesa: 5/100 · San Diego: 6/100
San Diego is 1 points higher.
Costa Mesa: Wind exposure derived from ingested design wind / climatology tiles.
San Diego: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Costa Mesa: 0/100 · San Diego: 1/100
San Diego is 1 points higher.
Costa Mesa: Lightning exposure derived from ingested climatology tiles.
San Diego: Lightning exposure derived from ingested climatology tiles.
Tornado
Costa Mesa: 54/100 · San Diego: 12/100
Costa Mesa is 42 points higher.
Costa Mesa: Tornado risk derived from NOAA SPC historical reports.
San Diego: Tornado risk derived from NOAA SPC historical reports.
Hail
Costa Mesa: 8/100 · San Diego: 5/100
Costa Mesa is 3 points higher.
Costa Mesa: Hail risk derived from NOAA SPC historical reports.
San Diego: Hail risk derived from NOAA SPC historical reports.
Storm surge
Costa Mesa: Unavailable · San Diego: Unavailable
A score difference cannot be calculated without both sources.
Costa Mesa: Storm surge model is not available for this location yet.
San Diego: Storm surge model is not available for this location yet.
Wildfire
Costa Mesa: 59/100 · San Diego: 69/100
San Diego is 10 points higher.
Costa Mesa: Wildfire exposure derived from ingested fire potential tiles.
San Diego: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Costa Mesa: 28/100 · San Diego: 24/100
Costa Mesa is 4 points higher.
Costa Mesa: 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 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.