Wildfire Danger Rating
Hot, dry and windy is the wildfire recipe. Enter temperature, humidity, wind and season to get a simplified fire-danger class — and whether lighting a campfire is wise today.
Rate the fire danger
A simplified model inspired by NWS fire-weather thresholds — always defer to the local fire service and any fire ban. Try the example first.
Results
How is this calculated?
This is a simplified fire-weather index inspired by U.S. NWS / NOAA fire-weather thresholds. Each factor is scored 0–4: temperature (cool 0 … very hot 4), relative humidity (humid 0 … <10% 4) and wind (calm 0 … >35 mph 4). The three are summed and multiplied by a seasonal fuel-moisture factor (wet 0.7, spring 1.0, summer 1.3, drought 1.5). The result maps to: low ≤3, moderate 4–6, high 7–9, very high 10–12, extreme >12.
index = (temp_pts + humidity_pts + wind_pts) × seasonal_factor
Source: simplified model based on NWS / NOAA fire-weather public guidance and general wildfire-danger practice. It is NOT an official fire-danger rating — always check the local forest service, park service and any active campfire ban.