What is WBGT?

Wet bulb globe temperature measures heat stress in direct sunlight, giving a better idea of how the human body will react in hot and humid weather.

WBGT readings, unlike regular temperature readings, combine the effects of:

  • air temperature

  • wind speed

  • relative humidity

  • sun angle

  • cloud cover (solar radiation)

By taking in these other factors, WBGT is a more practical, accurate, and useful measurement of heat as it relates to the body, especially when dealing with outdoor activities and sports programs.  

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