Do fans actually keep you cool in a heat wave? The answer may surprise you
A heat wave is driving temperatures and heat index values in Charlotte and around the region near and even into the triple digits this week, heightening the risk for heat-related health issues and highlighting the need for means to stay cool.
The high temperatures have many turning to fans to get some extra relief — with one Mecklenburg County initiative even distributing fans to some vulnerable groups — but experts say there are limits to how much help fans can provide.
Here’s what to know about what fans can and can’t do for you during a heat wave, and some other tips for keeping cool when temperatures soar.
Do fans keep you cool in 100-degree weather?
Fans can help make you feel cooler when it’s hot, but they can’t do much for your health when temperatures are dangerously high, per the Centers for Disease Control and Prevention.
“Electric fans may provide comfort, but when the temperature is in the high 90s, fans will not prevent heat-related illness,” the CDC says.
When temperatures are high enough to threaten your health, air conditioning goes a lot further than a fan in terms of keeping you safe, the agency adds.
“Air conditioning is the strongest protective factor against heat-related illness,” the CDC says. “Exposure to air conditioning for even a few hours a day will reduce the risk for heat-related illness.”
If you don’t have air conditioning, the CDC recommends going to a public place that does, such as a mall or library, for part of the day during heat waves.
Mecklenburg County also offers cooling stations to help the community, including those experiencing homelessness, stay safe.
Other ways to stay cool in a heat wave
In addition to seeking out air conditioning, the CDC also suggests more ways for staying cool when temperatures reach dangerous levels, including:
Drink cool, non-alcoholic drinks, such as water, fruit juice or sports drinks
Take a cold shower or bath
Rest in a cool space
Wear lightweight clothing
Avoid doing things outside, especially strenuous activities such as exercise, during the hottest parts of the day
Wear sunscreen when you have to be outside, and make sure to continuously reapply when still outside
This story was originally published June 14, 2022 at 12:09 PM.
