City vs city
Grain Valley vs Saint Clair, MO
Grain Valley currently scores 4 points higher overall than Saint Clair, 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 Clair: 40/100
Grain Valley is 4 points higher.
Flood
Grain Valley: 44/100 · Saint Clair: 51/100
Saint Clair is 7 points higher.
Grain Valley: FEMA NFHL flood zones: 5 features intersect this tile.
Saint Clair: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Grain Valley: 18/100 · Saint Clair: 16/100
Grain Valley is 2 points higher.
Grain Valley: Wind exposure derived from ingested design wind / climatology tiles.
Saint Clair: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grain Valley: 75/100 · Saint Clair: 52/100
Grain Valley is 23 points higher.
Grain Valley: Lightning exposure derived from ingested climatology tiles.
Saint Clair: Lightning exposure derived from ingested climatology tiles.
Tornado
Grain Valley: 8/100 · Saint Clair: 12/100
Saint Clair is 4 points higher.
Grain Valley: Tornado risk derived from NOAA SPC historical reports.
Saint Clair: Tornado risk derived from NOAA SPC historical reports.
Hail
Grain Valley: 100/100 · Saint Clair: 84/100
Grain Valley is 16 points higher.
Grain Valley: Hail risk derived from NOAA SPC historical reports.
Saint Clair: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grain Valley: Unavailable · Saint Clair: Unavailable
A score difference cannot be calculated without both sources.
Grain Valley: Storm surge model is not available for this location yet.
Saint Clair: Storm surge model is not available for this location yet.
Wildfire
Grain Valley: 37/100 · Saint Clair: 41/100
Saint Clair is 4 points higher.
Grain Valley: Wildfire exposure derived from ingested fire potential tiles.
Saint Clair: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grain Valley: 25/100 · Saint Clair: 27/100
Saint Clair is 2 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 Clair: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.