The extreme heat poses significant risks to vulnerable populations, including older adults, young children, outdoor workers, and individuals with chronic medical conditions. Prolonged exposure to such high temperatures can lead to heat-related illnesses, including heat exhaustion and heat stroke, which can be life-threatening. The Mojave Desert region, including Death Valley, is expected to face 'major to extreme heat risk,' with limited overnight cooling compounding the danger. Residents and visitors in the affected areas are urged to take precautions to avoid heat-related health issues.