Miami rolled into Thursday already feeling like a steam room, with pre-dawn temperatures stuck in the low 80s and the kind of humidity that fogs your sunglasses the second you step outside. By this afternoon, that sticky start is set to turn into full-on brutal heat, with conditions expected to feel significantly hotter than what the thermometer shows.
Heat Advisory Today
The National Weather Service has issued a Heat Advisory from 11 a.m. to 7 p.m. on Thursday, July 16, 2026, with heat-index values expected to land between 105–108°F across coastal and metro Miami-Dade. Forecasters are calling for actual afternoon highs near 92°F with overnight lows holding in the low 80s. The advisory, which also covers coastal Broward and Palm Beach counties along with metropolitan Miami, warns that the combination of hot temperatures and high humidity can trigger heat-related illness, according to NWS Miami.
Afternoon Conditions
Humidity will crank the apparent temperature into the low-to-mid 100s, so any mid-day outdoor plans are likely to feel downright oppressive. Winds should stay light from the southwest, and with sea-breeze collisions only sparking isolated showers, most neighborhoods are expected to stay dry and very hot rather than getting any real cooling relief.
Where To Cool Off
For anyone who needs an air-conditioned timeout, Miami-Dade County operates a network of cooling sites and community centers, with hours and locations posted online. Nearby options include Model City (Caleb Center), 2211 NW 54th St, Miami, FL 33142, and Legion Memorial Park, 6447 NE 7 Ave, Miami, FL 33138. Check the county page for specific hours and availability at Miami-Dade County.
Storms Later This Week
Deeper tropical moisture is expected to move in Friday into the weekend, which will boost the odds of showers and thunderstorms, along with heavier downpours and gusty winds. The National Weather Service notes that storm coverage and intensity should increase as the air mass becomes more humid, according to NWS Miami, so it is worth building some weather wiggle room into outdoor plans.
To stay safe in the heat, keep hydrated, skip strenuous activity during the hottest part of the day, and head indoors if you start feeling dizzy, faint, or nauseous. Outdoor workers should take frequent shaded or air-conditioned breaks and follow any employer heat-safety rules already in place.
