Miami, Florida – Sweltering heat across South Florida Sunday could push the heat index as high as 109°, prompting an urgent heat advisory and raising concerns for heat-related illnesses across Miami, Fort Lauderdale, Hialeah, and West Palm Beach.
According to the National Weather Service in Miami, the advisory remains in effect until 7 p.m. EDT Sunday and spans southeast, southern, and southwest Florida. While actual air temperatures will hover around 90°F, high humidity is intensifying the heat index to dangerous levels, especially during the late morning and early afternoon hours.
A slight chance of thunderstorms—around 30%—is expected to develop between 2 and 5 p.m., potentially offering brief relief but also bringing isolated lightning and localized gusts. Wind will remain light and variable, contributing to stagnant conditions. Cities including Coral Gables, Davie, Pembroke Pines, and Kendall are urged to limit outdoor activity during peak heat hours.
Residents are advised to stay in air-conditioned spaces, drink water regularly, avoid strenuous activity outdoors, and check on vulnerable neighbors.
Scattered storm chances persist into Monday and Tuesday, while heat and humidity remain high through midweek. Additional advisories may follow if conditions worsen.
Five-Day Forecast for Miami, Florida:
- Monday: High 90°F, chance of PM storms (40%)
- Tuesday: High 90°F, partly sunny, storm chance (50%)
- Wednesday: High 89°F, storms likely (70%)
- Thursday: High 88°F, rain continues (60%)
- Friday: High 88°F, more scattered storms (60%)
