The extreme heat poses significant health risks, particularly for vulnerable populations such as the elderly, children, and those with pre-existing health conditions. Prolonged exposure to high temperatures and humidity can lead to heat-related illnesses, including heat exhaustion and heatstroke. Cities like Las Vegas, Phoenix, and Rapid City are at the highest risk, with temperatures expected to reach or exceed 105°F (40.6°C). The heat may also strain power grids and increase the risk of wildfires in the affected regions.