More than 90 million people from California to Kentucky are under alerts for dangerously hot conditions (ABC News). The combination of extreme heat and humidity increases the risk of heat-related illnesses such as heat exhaustion and heat stroke, particularly for vulnerable populations like the elderly, children, and those with pre-existing health conditions. Outdoor workers and individuals engaging in physical activities are also at heightened risk. Local meteorologists have described these conditions as some of the most extreme they can recall, emphasizing the need for caution.