Multi-Day Heat Wave to Bring Excessive Heat

Posted at 11:55 a.m.heat

The National Weather Service is forecasting a multiple day heat wave Friday, July 22 through Monday, July 25. You should expect excessive heat with temperatures in the upper 90s with heat indices at or above 105°F (Fahrenheit). The hottest days appear to be Saturday, July 23 and Sunday, July 24 when heat indices could approach 110°F.

A heat dome will build over the region from the Midwest and cause temperatures to soar into the upper 90s and may reach 100°F. This, when combined with high humidity, will create dangerous heat indices exceeding 105°F.

Please use caution this weekend and remember these heat safety tips:

  • Never leave children or pets alone in a closed vehicle.
  • Drink plenty of fluids: Drink two to four glasses of cool fluids each hour.
    • Your body needs water to keep cool. Drink water even if you don’t feel thirsty.
    • Do not drink caffeinated or alcoholic beverages because they dehydrate the body.
  • Keep cool indoors: If you can, stay in an air-conditioned area.
    • Ensure your home’s cooling system is working properly before it is truly needed.
    • Resting for just two hours in air conditioning can significantly reduce heat-related illnesses.
    • Consider spending the warmest part of the day in public buildings such as libraries, schools, movie theaters, shopping malls and other community facilities, including the county’s cooling centers.
    • Electric fans may provide comfort, but with temperatures in the 90s, fans will not prevent heat-related illness.
  • Avoid strenuous physical activities or reschedule outdoor activities for the coolest part of the day, usually the early morning. Limit physical activity until your body adjusts to the heat.
  • Wear sunscreen to prevent sunburn. Sunburn makes it more difficult for your body to cool off.
    • Wear light-colored clothing, which helps reflect sunlight.
  • Eat light meals, avoiding high-protein foods because they increase metabolic heat.
  • Don’t take salt tablets unless directed by a physician.

Heat Safety

Learn more about extreme heat and how to stay safe, as well as precautions to take for the vulnerable and pets.

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Official emergency information about preparedness, response and recovery from Fairfax County Government.

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