More than 41 million people, approximately 12% of the U.S. population, were under extreme heat advisories, watches, or warnings during this event. The combination of high temperatures, elevated humidity, and limited overnight cooling posed health risks, particularly for vulnerable populations such as the elderly and those with pre-existing conditions. Nighttime temperatures in Nashville did not drop below 75°F (23.9°C), further exacerbating the heat's impact by reducing recovery time for both people and infrastructure.