City vs city
Riverside vs Simi Valley, CA
Riverside currently scores 1 points higher overall than Simi Valley, with the largest gap in current air quality.
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 is a current EPA AirNow signal; 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
Riverside: 27/100 · Simi Valley: 26/100
Riverside is 1 points higher.
Flood
Riverside: 33/100 · Simi Valley: 29/100
Riverside is 4 points higher.
Riverside: FEMA NFHL flood zones: 10 features intersect this tile.
Simi Valley: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Riverside: 5/100 · Simi Valley: 4/100
Riverside is 1 points higher.
Riverside: Wind exposure derived from ingested design wind / climatology tiles.
Simi Valley: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Riverside: 2/100 · Simi Valley: 0/100
Riverside is 2 points higher.
Riverside: Lightning exposure derived from ingested climatology tiles.
Simi Valley: Lightning exposure derived from ingested climatology tiles.
Tornado
Riverside: 8/100 · Simi Valley: 0/100
Riverside is 8 points higher.
Riverside: Tornado risk derived from NOAA SPC historical reports.
Simi Valley: Tornado risk derived from NOAA SPC historical reports.
Hail
Riverside: 0/100 · Simi Valley: 6/100
Simi Valley is 6 points higher.
Riverside: Hail risk derived from NOAA SPC historical reports.
Simi Valley: Hail risk derived from NOAA SPC historical reports.
Storm surge
Riverside: Unavailable · Simi Valley: Unavailable
A score difference cannot be calculated without both sources.
Riverside: Storm surge model is not available for this location yet.
Simi Valley: Storm surge model is not available for this location yet.
Wildfire
Riverside: 83/100 · Simi Valley: 72/100
Riverside is 11 points higher.
Riverside: Wildfire exposure derived from ingested fire potential tiles.
Simi Valley: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Riverside: 32/100 · Simi Valley: 17/100
Riverside is 15 points higher.
Riverside: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Simi Valley: Air quality signal derived from the latest EPA AirNow combined AQI grid.