Temperatures reached 102 degrees in Washington, D.C., over the July 4 holiday weekend, and Fairfax County had already activated its Heat Plan days earlier to protect residents from dangerous conditions.

The county's Department of Emergency Management and Security triggered the plan on July 2, after the National Weather Service issued an Extreme Heat Watch for July 4. That watch was later upgraded to an Extreme Heat Warning covering both July 3 and July 4, from 10 a.m. to 9 p.m. EDT.

County officials identified older adults, people with chronic health conditions, outdoor workers and residents without reliable air conditioning as most at risk.

Cooling centers and shelters

Libraries, community centers, human services offices and Rec Centers served as cooling centers during the activation. The county also opened the Jim Scott Community Center at 3001 Vaden Drive in Fairfax as a 24-hour cooling site from July 2 through July 5 at 8 a.m.

Hunter Mill District Supervisor Walter Alcorn confirmed the 24-hour site on July 2, noting that "most county sites will be closed Fri 7/3" because of the Independence Day holiday. All Rec Centers except George Washington Rec Center stayed open on July 3.

The county's three emergency shelters for single adults also activated daytime and overnight overflow capacity to ensure space for anyone seeking relief. Cooling centers provided bottled water, sunscreen, insect repellent and body wipes. Outreach teams and partner organizations distributed supplies to unsheltered residents.

Regional impact

The heat wave hit hard across the Eastern U.S. On Saturday, July 4, the CDC's daily heat-related illness tracker showed "extreme" rates of emergency department visits from New York to Georgia, NPR reported. At least 40 deaths across the region were linked to the heat wave, according to NPR's reporting of local officials' tallies. Independence Day parades in Philadelphia and Washington, D.C., were canceled.

What residents should know

Cooling centers remain open throughout the summer during regular business hours, regardless of whether the Heat Plan is formally activated. County officials warned that extreme heat can strain HVAC systems and cause unexpected facility closures, so residents should verify a location's status at fairfaxcounty.gov/status before traveling.

Heat stroke is a medical emergency. Call or text 911 if someone shows confusion, loss of consciousness, or dangerously high body temperature. Children and pets should never be left unattended in vehicles.

Residents can find a full list of cooling centers at fairfaxcounty.gov/topics/extreme-heat-resources and sign up for Fairfax Alerts for notifications about future heat emergencies.