High temperatures and humidity in cities like Miami and Singapore increase the risk of heat exhaustion and heat stroke, particularly for vulnerable populations such as the elderly and outdoor workers. Similarly, extreme heat in Tokyo and Phoenix can lead to dehydration and heat-related illnesses. On the other hand, the severe cold in Moscow and Anchorage raises concerns about hypothermia and frostbite. These weather extremes can disrupt daily life, strain healthcare systems, and pose safety risks for both residents and visitors.