What does the Heat Index measure?

The Heat Index is a measure that combines air temperature with humidity to determine how hot it actually feels to the human body. This is significant because high humidity can impede the body's ability to cool itself through the evaporation of sweat. Therefore, even if the actual air temperature is within a normal range, high humidity can make it feel much hotter, increasing the risk of heat-related illnesses.

Understanding the Heat Index is crucial for ensuring safety in environments where individuals are exposed to high temperatures, especially during the summer months or in humid climates. This measure serves as a valuable tool for planning outdoor activities and implementing safety protocols for workers who may be affected by heat exposure.