The alert will be active for Wednesday, July 20, from 12 p.m. until 7 p.m. as temperatures are expected to exceed 95 degrees, according to the Montgomery County Office of Emergency Management and Homeland Security.
Temperatures are expected to hover in the low to mid-90s through the rest of the week, approaching 100 degrees during the weekend in the region.
Heat-related safety concerns for people or pets can be reported by calling 301-279-8000.
Click here to follow Daily Voice Gaithersburg and receive free news updates.