Temperatures hit the upper 90s by noon Monday. We’re headed to the triple digits and temperatures could be even warmer Tuesday.

Take extra precautions if you’ll be spending time outdoors. Here are tips from the National Weather Service.

Adult Heat Wave Safety Tips

• Slow down. Reduce, eliminate or reschedule strenuous activities until the coolest time of the day. Children, seniors and anyone with health problems should stay in the coolest available place, not necessarily indoors.
• Dress for summer. Wear lightweight, light-colored clothing to reflect heat and sunlight.
• Put less fuel on your inner fires. Foods, like meat and other proteins that increase metabolic heat production also increase water loss.
• Drink plenty of water, non-alcoholic and decaffeinated fluids. Your body needs water to keep cool. Drink plenty of fluids even if you don’t feel thirsty. Persons who have epilepsy or heart, kidney or liver disease, are on fluid restrictive diets or have a problem with fluid retention should consult a physician before increasing their consumption of fluids. Do not drink alcoholic beverages and limit caffeinated beverages.
• During excessive heat periods, spend more time in air-conditioned places. Air conditioning in homes and other buildings markedly reduces danger from the heat. If you cannot afford an air conditioner, go to a library, store or other location with air conditioning for part of the day.
• Don’t get too much sun. Sunburn reduces your body’s ability to dissipate heat.
• Do not take salt tablets unless specified by a physician.

Here’s more on extreme heat :

Heat is the number one weather-related killer in the United States, resulting in hundreds of
fatalities each year. In fact, on average, excessive heat claims more lives each year than floods, lightning, tornadoes and hurricanes combined. In the disastrous heat wave of 1980, more than 1,250 people died. In the heat wave of 1995 more than 700 deaths in the Chicago area were attributed to heat. In August 2003, a record heat wave in Europe claimed an estimated 50,000 lives.

North American summers are hot; most summers see heat waves in one or more parts of the United States. East of the Rockies, they tend to combine both high temperature and high humidity, although some of the worst heat waves have been catastrophically dry.