Miami woke up to clear skies and about 82°F at Miami International Airport on Wednesday morning, July 15, 2026, but the real story hits later. With humidity cranking up, the afternoon is expected to feel brutally hotter, and forecasters are warning that conditions across the metro could be oppressive enough to rethink those midday outdoor plans.
Afternoon Outlook
Wednesday will stay mostly sunny with a high near 91°F. The sea breeze should keep the immediate beaches a bit cooler, while inland neighborhoods and western suburbs bake in higher heat and humidity. Isolated to scattered afternoon storms are possible over interior South Florida, and any stronger cells could bring gusty winds and heavy downpours to break up the heat, at least briefly.
Heat Advisory
According to NWS Miami, a Heat Advisory is in effect from 11 a.m. to 7 p.m. EDT on Wednesday, July 15, 2026. Heat index values are expected to run in the 105 to 108°F range across metro and coastal areas, which pushes conditions into the dangerous category for anyone spending long stretches outside. Forecasters urge people to drink plenty of fluids, stay in air-conditioned locations when possible, avoid prolonged sun exposure, and check on neighbors and pets.
Where To Find Relief
Miami-Dade maintains a network of cooling sites, including libraries, community centers and designated county locations that open during heat activations. For the full list of cooling sites and detailed heat-safety tips, visit Miami-Dade County.
Plan Ahead
If you have to be outside, move strenuous work to the morning or evening, carry water, and reschedule nonessential outdoor activities during the advisory window. If someone shows signs of heat exhaustion or heat stroke, such as confusion, fainting or a very high body temperature, call 911 immediately.
