The extreme heat and humidity in Houston pose significant health risks, particularly for those unaccustomed to such conditions. Heat exhaustion and heat stroke are common concerns, with symptoms including dizziness, heavy sweating, nausea, and confusion. The Centers for Disease Control and Prevention (CDC) warns that severe cases can lead to medical emergencies. Additionally, the high humidity can exacerbate dehydration and make outdoor activities dangerous, especially between 10 a.m. and 5 p.m. Residents are advised to monitor heat alerts and take precautions to avoid prolonged exposure to the heat.