When the heat picks up in the summer, most people without air conditioning turn on a fan to feel more comfortable. When it’s moderately hot, a fan can do a great job of cooling people down. However, according to research from multiple health organizations, there comes a point at which fans stop making us cooler and instead put people at risk of heat-related illness.

A fan pushes air around the room, cooling you by speeding up the evaporation of sweat. But when the air around you is warmer than your skin temperature, the opposite happens: The fan adds heat to your body faster than you can sweat and cool down.

At what temperature does a fan make you hotter?

The American Lung Association (ALA), the Environmental Protection Agency (EPA), the Centers for Disease Control and Prevention (CDC), and the World Health Organization (WHO) all say fans become much less effective once temperatures reach about 95°F.

“Do not use........

© Upworthy