City vs city
Saint Clair vs Union, MO
Union currently scores 7 points higher overall than Saint Clair, 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 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
Saint Clair: 40/100 · Union: 47/100
Union is 7 points higher.
Flood
Saint Clair: 51/100 · Union: 50/100
Saint Clair is 1 points higher.
Saint Clair: FEMA NFHL flood zones: 10 features intersect this tile.
Union: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Saint Clair: 16/100 · Union: 16/100
No gap.
Saint Clair: Wind exposure derived from ingested design wind / climatology tiles.
Union: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Saint Clair: 52/100 · Union: 51/100
Saint Clair is 1 points higher.
Saint Clair: Lightning exposure derived from ingested climatology tiles.
Union: Lightning exposure derived from ingested climatology tiles.
Tornado
Saint Clair: 12/100 · Union: 42/100
Union is 30 points higher.
Saint Clair: Tornado risk derived from NOAA SPC historical reports.
Union: Tornado risk derived from NOAA SPC historical reports.
Hail
Saint Clair: 84/100 · Union: 100/100
Union is 16 points higher.
Saint Clair: Hail risk derived from NOAA SPC historical reports.
Union: Hail risk derived from NOAA SPC historical reports.
Storm surge
Saint Clair: Unavailable · Union: Unavailable
A score difference cannot be calculated without both sources.
Saint Clair: Storm surge model is not available for this location yet.
Union: Storm surge model is not available for this location yet.
Wildfire
Saint Clair: 41/100 · Union: 46/100
Union is 5 points higher.
Saint Clair: Wildfire exposure derived from ingested fire potential tiles.
Union: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Saint Clair: 27/100 · Union: 27/100
No gap.
Saint Clair: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Union: Air quality signal derived from the latest EPA AirNow combined AQI grid.