Heat Advisory What is a heat advisory and what does it mean? A heat advisory is issued in our area when the heat index is at or above 105 degrees for two or more consecutive days. It can also be issued when the air temperature reaches 103 degrees or more for at least 2 consecutive days. A heat advisory is issued to bring attention to the extreme heat as it can be very dangerous. During a heat advisory, the National Weather Service advises people to limit time outdoors, drink plenty of fluids and check on neighbors, family and friends. People or pets without a place to keep cool or have enough water can easily suffer from heat related illnesses. Never leave children or pets inside a vehicle as the temperature inside can reach life-threatening levels quickly. Heat exhaustion is a condition whose symptoms may include heavy sweating and a rapid pulse, a result of your body overheating. Causes of heat exhaustion include exposure to high temperatures, particularly when combined with high humidity, and strenuous physical activity. Without prompt treatment, heat exhaustion can lead to heatstroke, a life-threatening condition. Learn the symptoms and how to prevent heat-related illness.