FORT MYERS, Fla. – All of southwest Florida is under a heat advisory again today with particularly muggy conditions already in place this morning and temperatures in the 80s. Temperatures will climb to the mid 90s but with humidity factored in, it will feel like the triple digits this afternoon so it’s important to stay hydrated all day. If you’re working outdoors today, be sure to know the signs of heat exhaustion and take frequent breaks from the heat.