South Florida residents are being urged to take extreme caution as a heat advisory remains active across Palm Beach County through Wednesday evening, with the National Weather Service warning that combined heat and humidity could push feels-like temperatures as high as 105 to 110 degrees.
Officials say anyone spending extended time outdoors should stay hydrated, take frequent breaks in shaded or air-conditioned areas, and avoid strenuous physical activity during peak afternoon heat. Authorities also renewed a critical safety reminder: never leave children or pets unattended inside a parked vehicle, even briefly, as interior temperatures can rise to dangerous levels within minutes.
Scattered showers and thunderstorms are expected to persist into the early evening, mainly across northern Palm Beach County, the Lake Okeechobee region, and parts of the Treasure Coast. However, forecasters say storm activity will gradually taper off as the sun sets and daytime heating fades. By 8 to 10 p.m., most remaining storms are expected to move offshore or dissipate entirely, giving way to partly cloudy skies overnight. Despite the break from rain, temperatures are only expected to dip into the upper 70s, keeping the air thick and humid heading into Thursday morning.
Conditions are expected to intensify on Thursday, which forecasters say could become one of the hottest days of the week. A mix of drier air, Saharan dust, and a strengthening area of high pressure is expected to suppress storm development across much of South Florida, allowing for longer sunshine hours and rising temperatures.
Highs are forecast to reach the mid-90s regionwide, with some inland communities potentially spiking into the upper 90s if rain stays minimal. Combined with humidity, heat index readings could climb to between 104 and 110 degrees, raising renewed concern over possible heat-related illness during afternoon hours.
While an isolated shower cannot be entirely ruled out — particularly near Lake Okeechobee and northern Palm Beach County — most of the region is expected to stay dry as the heat builds heading into the weekend.
