Extreme Heat Warning Issued for July 4 in DC, Maryland, and Virginia
The National Weather Service (NWS) Baltimore MD/Washington DC has issued an Extreme Heat Warning for Washington D.C., portions of central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. This warning is in effect from 10 AM EDT until 9 PM EDT on July 4, 2026, with dangerously hot conditions and heat index values between 110 to 113 expected each afternoon.
The National Weather Service (NWS) Baltimore MD/Washington DC has issued an Extreme Heat Warning, effective from 10 AM EDT until 9 PM EDT on July 4, 2026. Dangerously hot conditions are expected each afternoon, with heat index values projected to reach between 110 to 113.
The warning covers Washington D.C., along with portions of central, north central, northeast, northern, and southern Maryland. Additionally, central, northern, and northwest Virginia are included in the affected regions.
Authorities emphasize that heat-related illnesses are expected to increase significantly during this period of extreme heat and high humidity. Residents in the affected areas are advised to take extra precautions. Limiting strenuous activities to early morning or evening hours is recommended, and individuals should wear lightweight and loose-fitting clothing when outside.
Staying hydrated by drinking plenty of fluids is crucial. People should seek air-conditioned environments and remain out of the sun whenever possible. It is also important to check up on relatives and neighbors to ensure their safety during this hot period. Additionally, individuals should never leave young children or pets in unattended vehicles, as car interiors can reach lethal temperatures rapidly.