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The heat index (feels-like temperature) combines air temperature and relative humidity to determine the apparent temperature. High humidity impairs the body's ability to cool itself through sweating, making hot conditions feel significantly hotter than the thermometer reads.
단계별 가이드
- 1Uses the Rothfusz regression equation (NWS, USA)
- 2Only applicable when temperature > 27°C (80°F) and humidity > 40%
- 3Below this threshold, the actual temperature is used directly
- 4HI = −42.379 + 2.04901523T + 10.14333127RH − 0.22475541TH − 0.00683783T² − 0.05481717RH² + ...
풀어진 예시
입력
35°C (95°F), 70% humidity
결과
Feels like 51°C (124°F)
Extreme danger level
입력
32°C (90°F), 50% humidity
결과
Feels like 38°C (100°F)
Caution — heat cramps possible