The extreme heat poses significant risks to residents and visitors in Palm Beach County, particularly during peak afternoon hours. Vulnerable populations, including children, the elderly, and pets, are at heightened risk of heat-related illnesses. The National Weather Service warns that heat advisories are triggered when the heat index reaches at least 108°F (42.2°C) for two consecutive hours. Warm overnight temperatures, ranging from the upper-70s°F to low-80s°F (25°C to 27°C), exacerbate the situation by preventing nighttime cooling, leading to faster daytime heating. Outdoor activities during midday hours are strongly discouraged.