Heat Index

The heat index is a measure that combines air temperature and humidity to estimate how hot it feels to our skin, rather than just the actual air temperature. When humidity is high, sweat doesn't evaporate easily, making it feel much hotter than the actual temperature. The heat index helps people understand the risk of heat-related illnesses, especially during hot, humid days. Essentially, it reflects the body's effort to cool itself, indicating when extra caution is needed to stay safe and hydrated.