City vs city
Johnston City vs Marion, IL
Johnston City currently scores 3 points higher overall than Marion, with the largest gap in flood.
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
Johnston City: 48/100 · Marion: 45/100
Johnston City is 3 points higher.
Flood
Johnston City: 76/100 · Marion: 43/100
Johnston City is 33 points higher.
Johnston City: FEMA NFHL flood zones: 9 features intersect this tile.
Marion: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Johnston City: 15/100 · Marion: 15/100
No gap.
Johnston City: Wind exposure derived from ingested design wind / climatology tiles.
Marion: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Johnston City: 48/100 · Marion: 49/100
Marion is 1 points higher.
Johnston City: Lightning exposure derived from ingested climatology tiles.
Marion: Lightning exposure derived from ingested climatology tiles.
Tornado
Johnston City: 27/100 · Marion: 50/100
Marion is 23 points higher.
Johnston City: Tornado risk derived from NOAA SPC historical reports.
Marion: Tornado risk derived from NOAA SPC historical reports.
Hail
Johnston City: 100/100 · Marion: 100/100
No gap.
Johnston City: Hail risk derived from NOAA SPC historical reports.
Marion: Hail risk derived from NOAA SPC historical reports.
Storm surge
Johnston City: Unavailable · Marion: Unavailable
A score difference cannot be calculated without both sources.
Johnston City: Storm surge model is not available for this location yet.
Marion: Storm surge model is not available for this location yet.
Wildfire
Johnston City: 39/100 · Marion: 27/100
Johnston City is 12 points higher.
Johnston City: Wildfire exposure derived from ingested fire potential tiles.
Marion: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Johnston City: 30/100 · Marion: 30/100
No gap.
Johnston City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Marion: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.