Wet bulb temperature is the lowest temperature to which air can be cooled by the evaporation of water into the air (sweating, evaporative cooling). If that tem

Wet bulb temperature is the lowest temperature to which air can be cooled by the evaporation of water into the air (sweating, evaporative cooling). If that temperature exceeds the body's max temperature, the clock starts ticking. If you stay, you die. It's not just very hot.