Today’s sweltering conditions are just shy of the threshold for “extreme heat,” as we’ve seen for the past couple of days, but have still prompted a Heat Advisory.
Temperatures are expected to reach into the mid-to-high 90s today, with heat index values up to 108, forecasters say. Anyone spending significant time or exertion outside potentially runs the risk of heat exhaustion and heat stroke.
A relative cooldown starts tomorrow, as the high temperature dips to 92 on Thursday and 85 on Friday, though that change also comes with a storm risk.
More on the Heat Advisory today (Wednesday), below, from the National Weather Service.
408 AM EDT Wed Jun 25 2025
…HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM EDT THIS EVENING…
* WHAT…Heat index values up to 108 expected, with heat index values up to 104 degrees west of the Blue Ridge Mountains.
* WHERE…DC, central, north central, northeast, northern, southern, and western Maryland, central, northern, northwest, and western Virginia, and eastern and panhandle West Virginia.
* WHEN…From 11 AM this morning to 9 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.
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
