City vs city
Herndon vs McNair, VA
Herndon currently scores 4 points higher overall than McNair, with the largest gap in hail.
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
Herndon: 37/100 · McNair: 33/100
Herndon is 4 points higher.
Flood
Herndon: 24/100 · McNair: 29/100
McNair is 5 points higher.
Herndon: FEMA NFHL flood zones: 4 features intersect this tile.
McNair: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Herndon: 20/100 · McNair: 20/100
No gap.
Herndon: Wind exposure derived from ingested design wind / climatology tiles.
McNair: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Herndon: 38/100 · McNair: 37/100
Herndon is 1 points higher.
Herndon: Lightning exposure derived from ingested climatology tiles.
McNair: Lightning exposure derived from ingested climatology tiles.
Tornado
Herndon: 12/100 · McNair: 12/100
No gap.
Herndon: Tornado risk derived from NOAA SPC historical reports.
McNair: Tornado risk derived from NOAA SPC historical reports.
Hail
Herndon: 85/100 · McNair: 52/100
Herndon is 33 points higher.
Herndon: Hail risk derived from NOAA SPC historical reports.
McNair: Hail risk derived from NOAA SPC historical reports.
Storm surge
Herndon: Unavailable · McNair: Unavailable
A score difference cannot be calculated without both sources.
Herndon: Storm surge model is not available for this location yet.
McNair: Storm surge model is not available for this location yet.
Wildfire
Herndon: 41/100 · McNair: 42/100
McNair is 1 points higher.
Herndon: Wildfire exposure derived from ingested fire potential tiles.
McNair: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Herndon: 41/100 · McNair: 40/100
Herndon is 1 points higher.
Herndon: Air quality signal derived from the latest EPA AirNow combined AQI grid.
McNair: Air quality signal derived from the latest EPA AirNow combined AQI grid.