South Florida is cranking the heat today, with a Heat Advisory in place for Miami‑Dade and Broward counties from 11 a.m. to 7 p.m. Heat index values are expected to spike into the 104–108°F range during the hottest stretch of the afternoon, making extended time outside more than just uncomfortable. Officials are urging people to stay on top of hydration, cut back on strenuous outdoor work in the middle of the day, and keep an eye on vulnerable neighbors and pets.
A Heat Advisory is in effect for Miami-Dade and Broward counties from 11AM to 7PM today as heat index values are expected to climb into the 104-108 degree range. Make sure to stay hydrated and know heat illness signs if spending lengthy periods of time outside. #flwx https://t.co/IiBdMxynbc
— NWS Miami (@NWSMiami) July 20, 2026
Where It Will Feel Worst
According to NWS Miami, the advisory covers Miami‑Dade and Broward counties from 11 a.m. to 7 p.m., with “feels like” readings expected to climb into the 104–108°F range this afternoon. The agency warns that fans on their own may not cut it and recommends using air conditioning if it is available. Inland neighborhoods and the mid‑afternoon peak are likely to feel the most punishing combination of heat and humidity.
Who’s Most At Risk
Public health guidance flags older adults, infants, people with chronic medical conditions, and outdoor workers as especially vulnerable when the heat ramps up. The CDC notes that signs of heat exhaustion can include heavy sweating, weakness, dizziness, or nausea, while heat stroke can bring confusion or loss of consciousness. If heat stroke is suspected, officials say to call 911 and start cooling the person down right away.
Local Cooling Centers And What To Do
Broward County’s “Beat the Heat” information explains that community cooling centers are typically activated only when an Excessive Heat Warning is issued, which is when the heat index is 110°F or higher, although the county keeps a running list of summer locations and hours. If your home air conditioning is unreliable, you are urged to check the list or call 311 for current sites and hours; many cities and Miami‑Dade also operate community cooling spots during heat season. For a quick look at available options, see Broward County and our own cooling center guide.
Quick Safety Checklist
Throughout the day, drink water frequently, wear lightweight and light‑colored clothing, and push heavy outdoor activity to the morning or evening hours. Never leave children or pets in parked vehicles, even for a short time. Check in on older neighbors and anyone without air conditioning, and seek medical help right away if someone becomes disoriented or unresponsive in the heat.
