Prolonged exposure to high temperatures and humidity can overwhelm the body’s ability to cool itself, leading to heat-related illnesses. Heat exhaustion symptoms include heavy sweating, weakness, dizziness, and nausea. If untreated, it can progress to heat stroke, a medical emergency characterized by confusion, rapid pulse, and loss of consciousness. Vulnerable groups, such as young children, the elderly, and those with pre-existing health conditions, are at higher risk during extreme heat events.