Heat advisory issued for South Florida. It could feel like 107 on World Cup day

A heat advisory has been issued for South Florida, with feels-like temperatures of 103 to 107 in Monday’s forecast.

The National Weather Service advisory will be in effect for Miami-Dade and Broward counties from 11 a.m. to 6 p.m.

The extreme heat comes as tens of thousands of people head outside as the World Cup comes to town.

Uruguay vs. Saudi Arabia kicks off at 6 p.m. at Hard Rock Stadium in Miami Gardens, just as the advisory ends, but the gates open several hours before. And fans without tickets will be heading to downtown Miami for Fan Fest at Bayfront Park.

The weather service warns that “hot temperatures and high humidity may cause heat illnesses.”

“Hydrate right now,” said Shane Hinton, a meteorologist at Miami Herald news partner CBS News Miami. “Feel-like temperatures can soar.”

Hinton said he “would not be surprised” if additional heat advisories are issued beyond Monday.

While the heat index is expected to reach the triple figures, the actual high for Monday is 91, dropping to 78 at night.

In addition to the heat, which will peak around 2 p.m., South Florida also could get wet. Monday carries a 40% chance of rain by mid-afternoon., according to the National Weather Service.

MORE: As World Cup arrives, Miami’s heat and humidity a concern for players, fans

What is a heat advisory?

The National Weather Service in Miami issues a heat advisory if the heat index is 105 degrees for at least a couple of hours. Before 2023, the weather service issued a heat advisory when the heat index hit 108 degrees. The goal is to spread awareness so that people protect themselves from extreme heat that leads to more than 30 deaths and hundreds of hospitalizations every year, according to county estimates.

What is the heat index?

The heat index is a measure of how hot it really feels when relative humidity is factored in with the actual air temperature, according to the weather service. This is how hot it “feels like” on your skin on steamy days.

How can you prevent heat illness?

Miami-Dade County has issued several hot weather survival tips, based on U.S. Centers for Disease Control and Prevention advice, and noted who is most at risk:

Who is most at risk of heat-related illnesses:

Older adults 65 and older, young children, people with chronic health conditions or mental illness, athletes who exercise outdoors, outdoor workers, people living unsheltered or with limited access to air conditioning, pregnant people, and pets.

What you should do:

▪ Stay cool by spending time in air-conditioned buildings.

▪ Avoid direct contact with the sun.

▪ Reduce physical activity and move to shaded areas.

▪ Do outdoor activities in the cooler morning or evening hours, and dampening your shirt or wrapping a wet scarf or bandana around your neck or forehead could also help.

▪ Stay hydrated and drink plenty of water or drinks with electrolytes if you’re sweating. Don’t wait until you’re thirsty to drink more. Use sunscreen, too, to protect against skin damage.

▪ Limit or avoid dehydrating caffeine and alcohol.

▪ Never leave infants, children or pets in a parked car, even if the windows are cracked open.

▪ Watch for signs of heat exhaustion or heat stroke. Seek medical care immediately if you know someone who experiences symptoms that could include high body temperature, headache, dizziness or nausea and confusion.