Carry water when you go out and drink it through the day. Do not wait until you feel very thirsty. If a doctor has told you to limit how much you drink, follow their advice. When you can choose your schedule, plan outdoor tasks for early morning or later in the day. Take breaks in the shade, especially if your work keeps you outside.

Help your body cool down. Wear light, loose clothing and rest in a cooler place when you can. A cool shower or damp cloth may help if you feel too hot. At home, block direct sunlight during the day. You can let cooler air in at night when it is safe to do so. If your room stays hot, spend some time in a cooler place if one is available.

Pay attention to warning signs such as dizziness, headache, weakness, nausea or heavy sweating. Stop what you are doing and move somewhere cool. If a person becomes confused or faints after heat exposure, seek urgent medical help and help cool them while you wait. Check on children and older adults during very hot days, too. Small steps taken early can help you spot a problem before it gets worse.