Staying Safe in Extreme Heat A large part of the United States has been experiencing extreme heat conditions (high heat and humidity with the temperatures above 90 degrees for several days). During extreme heat, the body works extra hard to maintain a normal temperature. Heat-related distress can occur quickly and without warning.  Extreme heat can be dangerous for all, but especially for older adults and people with chronic conditions. Take steps to prepare and stay safe using these tips from Ready.gov: Find air conditioning. Avoid strenuous activities. Wear light clothing. Check on family members and neighbors. Drink plenty of fluids. Watch for heat cramps, heat exhaustion, and heat stroke. Never leave people or pets in a closed car. See more information about extreme heat from Ready.gov, the Centers for Disease Control and Prevention, and the National Institutes of Health.