City vs city
Grain Valley vs Saint Louis, MO
Grain Valley currently scores 8 points higher overall than Saint Louis, with the largest gap in lightning.
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
Grain Valley: 44/100 · Saint Louis: 36/100
Grain Valley is 8 points higher.
Flood
Grain Valley: 44/100 · Saint Louis: 7/100
Grain Valley is 37 points higher.
Grain Valley: FEMA NFHL flood zones: 5 features intersect this tile.
Saint Louis: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Grain Valley: 18/100 · Saint Louis: 16/100
Grain Valley is 2 points higher.
Grain Valley: Wind exposure derived from ingested design wind / climatology tiles.
Saint Louis: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grain Valley: 75/100 · Saint Louis: 37/100
Grain Valley is 38 points higher.
Grain Valley: Lightning exposure derived from ingested climatology tiles.
Saint Louis: Lightning exposure derived from ingested climatology tiles.
Tornado
Grain Valley: 8/100 · Saint Louis: 35/100
Saint Louis is 27 points higher.
Grain Valley: Tornado risk derived from NOAA SPC historical reports.
Saint Louis: Tornado risk derived from NOAA SPC historical reports.
Hail
Grain Valley: 100/100 · Saint Louis: 100/100
No gap.
Grain Valley: Hail risk derived from NOAA SPC historical reports.
Saint Louis: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grain Valley: Unavailable · Saint Louis: Unavailable
A score difference cannot be calculated without both sources.
Grain Valley: Storm surge model is not available for this location yet.
Saint Louis: Storm surge model is not available for this location yet.
Wildfire
Grain Valley: 37/100 · Saint Louis: 29/100
Grain Valley is 8 points higher.
Grain Valley: Wildfire exposure derived from ingested fire potential tiles.
Saint Louis: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grain Valley: 25/100 · Saint Louis: 28/100
Saint Louis is 3 points higher.
Grain Valley: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Saint Louis: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.