It’s about to be dangerously hot, meteorologists warn.
An extreme heat warning was issued by the National Weather Service in Jacksonville at 12:22 a.m. on Monday, July 28.
Forecasters warned temperatures could hit 95 to 103 degrees today, with a heat index between 108 to 115.
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An extreme heat watch also was issued for July 29, with temperatures expected to hit between 93 and 101 and a heat index between 108 and 115.
Extreme heat warning, heat watch issued for Northeast Florida
At 12:22 a.m. July 28, the NWS issued a statement saying an extreme heat warning has been issued.
“Dangerously hot conditions with heat index values up to 110 expected. For the extreme heat watch, dangerously hot conditions with heat index values up to 113 possible.”
Areas affected include portions of northeast and northern Florida and southeast Georgia.
The extreme heat warning will be in effect from noon today, July 28, to 7 p.m. ET this evening.
An extreme heat watch is in effect from Tuesday, July 29, afternoon through Tuesday evening.
“Heat-related illnesses increase significantly during extreme heat and high humidity events.”
What areas in North Florida are under an extreme heat warning?
Extreme heat warning in effect for July 28, 2025, with a heat index up to 115 possible.
The extreme heat warning applies to:
What areas in North Florida are under an extreme heat watch?
The extreme heat watch applies to:
Gainesville weather
According to the National Weather Service, the high temperature on Monday afternoon in Gainesville is expected to be about 99 degrees, with a heat index as high as 111. Monday night’s low will be around 77 degrees.
On July 29, the hight temperature in Gainesville is expected to reach 97 degrees, with a heat index of 113.
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What do meteorologists recommend?
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Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 911.
Stay in an air-conditioned room
Check on relatives and neighbors.
Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening.
Know the signs and symptoms of heat exhaustion and heat stroke.
Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments.
➤ Heat exhaustion, heat stroke in Florida: Symptoms, what to do, when to call 911
Heat index and temperature map for US, Florida
NWS issues several types of heat-related warnings
National Weather Service changed its heat watch and warning terms in March 2025. Here’s what you should know:
Excessive heat watches were renamed to extreme heat watches.
Issued when dangerous heat is possible and residents are encouraged to be prepared.
Excessive heat warnings were renamed to extreme heat warnings.
Issued when dangerous heat is happening or about to happen.
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This weather report was generated automatically using information from the National Weather Service and a story written and reviewed by an editor.
This article originally appeared on The Gainesville Sun: Gainesville faces dangerous heat wave; officials urge caution outdoors