The extreme heat poses significant risks to public health, particularly for those without access to air conditioning or who spend extended periods outdoors. Heat is the leading weather-related cause of fatalities in the U.S., and prolonged high temperatures can exacerbate health issues, especially for the elderly, children, and individuals with chronic illnesses. Popular tourist destinations, including Yellowstone, Grand Teton, Bryce Canyon, Zion, and Death Valley national parks, will also be affected, potentially impacting outdoor activities and increasing the risk of heat-related illnesses.