Record-breaking heat scorches US East Coast as forecasters warn of more extreme temperatures Friday
Record temperatures were shattered across parts of the U.S. East Coast on Thursday as a dangerous heatwave baked cities from Washington, D.C., to Boston, with forecasters warning that even hotter conditions could arrive on Friday before gradual relief begins over the holiday weekend.
The National Weather Service warned that temperatures between 95°F and 105°F (35°C to 40.5°C), combined with high humidity, could push heat index values as high as 115°F (46°C) across portions of the Mid-Atlantic and Northeast. Officials said numerous daily temperature records were broken Thursday, with additional records possible Friday and on Independence Day.
Cities including Washington, D.C., Philadelphia, New York and Boston remained under excessive heat warnings or advisories, prompting authorities to open cooling centers, extend public pool hours and urge residents to avoid prolonged outdoor activity, stay hydrated and check on vulnerable neighbors.
The prolonged heat has also increased pressure on electricity grids as demand for air conditioning surges. Utility companies and local governments have encouraged energy conservation while emergency officials continue monitoring public health risks, particularly for older adults, children and outdoor workers.
Forecasters expect the extreme heat to persist through Friday before thunderstorms and a gradual cooling trend begin easing conditions across parts of the Northeast later in the holiday weekend. However, officials cautioned that dangerous heat remains one of the deadliest weather hazards in the United States and urged residents to continue taking precautions.