A mix of high temperatures, humidity and potentially heavy rain will likely result in a volatile afternoon today (Tuesday) for Fairfax County.
The National Weather Service has issued a Heat Advisory for the D.C. region that will remain in effect until 7 p.m. A Flood Watch is also scheduled to be in place from 2 p.m. until midnight tomorrow (Wednesday).
With the heat index expected to climb up to 106 degrees, Fairfax County has activated its heat plan for the day, turning libraries, community centers and other facilities into cooling centers where people can find water bottles and other supplies.
🥵 Heat Advisory in effect today!
Temps + humidity = dangerous heat. Take precautions:
✅ Stay hydrated
✅ Limit outdoor activity
✅ Wear light, loose clothing
✅ Check on neighbors, kids & pets pic.twitter.com/Y7gOpZSBCB— Ready Fairfax (@ReadyFairfax) July 8, 2025
The full Heat Advisory from the NWS is below:
…HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING…
* WHAT…Heat index values up to 106 expected.
* WHERE…Portions of DC, central, northeast, northern, and southern Maryland, and central and northern Virginia.
* WHEN…Until 7 PM EDT this evening.
* IMPACTS…Hot temperatures and high humidity may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
In its Flood Watch, the NWS warns that excessive rain may lead to flash flooding throughout the region, with rain possibly falling at a rate of up to 2 inches per hour.
In her latest forecast for FFXnow, DC News Now meteorologist Jackie Layer predicts that the inclement weather could continue through the rest of the week, though the heaviest rain is expected today and tomorrow. Learn more about just how much rain to expect from her full video below, or by tuning into DC News Now/WDVM and DCW50.
