Severe Heat Dome to Affect 30 States — Heat Index Expected to Reach 105°F

An intense and potentially record-setting heat wave is anticipated to envelop the Central and Eastern regions of the United States beginning June 30, with the National Weather Service cautioning about heat index readings surpassing 100°F in approximately 30 states. The Mid-Atlantic area, which includes Washington D.C., Baltimore, and Philadelphia, is predicted to experience the most extreme conditions, with actual temperatures hitting 95°F and heat indices exceeding 105°F. Meteorologists warn that the interplay of heat and humidity presents a significant health hazard, particularly for vulnerable populations such as the elderly, children, and those working outdoors. Public health officials are advising residents to minimize outdoor exposure and ensure adequate hydration as the heat dome strengthens throughout the holiday week.