Sweating is how the body cools itself. The sweat evaporates, which lowers body temperature. When humidity is high, sweat can't evaporate well, and the body has a harder time staying cool.
Understanding Heat Index
- Heat index is how hot it feels when you combine temperature and humidity.
- Higher humidity makes it feel hotter.
More info: About Heat Forecast Tools (National Weather Service)
Who is at Risk?
Anyone can get sick from the heat, but some people are more likely to have serious problems, including:
- Outdoor workers (like construction and farmworkers)
- Infants and young children
- Older adults
- Pregnant people
- Athletes
- People with health problems
- People without access to air conditioning or reliable housing
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