The extreme heat and high humidity increase the risk of heat-related illnesses, particularly for vulnerable populations such as the elderly, children, and those with pre-existing health conditions. Coastal flooding and rip currents pose additional risks for beachgoers. The National Weather Service warns that car interiors can reach lethal temperatures within minutes, emphasizing the importance of not leaving children or pets in vehicles. The heat wave is also straining local resources, with residents seeking relief at designated 'Cool Zones.'