🌡️ NOAA / NWS Apparent Temperature
NOAA Heat Index & "Feels Like" Calculator
Compute perceived apparent temperature and evaluate official National Weather Service (NWS) heat danger categories (Caution, Extreme Caution, Danger, Extreme Danger).
Ambient Conditions
%
Apparent "Feels Like" Temperature
106 °F (41.1 °C)
Sunlight Exposure Impact
+15 °F in Direct Sun
Canadian Humidex
45 (Danger)
💡 NWS Safety Advisory:
Heat cramps and heat exhaustion likely with prolonged exposure or physical activity. Heatstroke possible.
NOAA Heat Index Danger Thresholds
- Caution (80°F - 90°F / 27°C - 32°C): Fatigue possible with prolonged exposure.
- Extreme Caution (91°F - 103°F / 33°C - 39°C): Heat cramps and heat exhaustion possible.
- Danger (104°F - 124°F / 40°C - 51°C): Heat cramps or exhaustion likely; heatstroke possible.
- Extreme Danger (125°F+ / 52°C+): Heatstroke highly imminent.