DC Area Braces for Another Day of Extreme Heat and Possible Fourth of July Storms

Another day of dangerous heat grips the DC region as an Extreme Heat Warning remains in effect from 10 a.m. to 8 p.m., with temperatures hitting 100–105°F and heat index around 110–112°F; Reagan National and Dulles airports could set daily records. Health officials warn the heat is especially harmful at night and urge hydration, light clothing and seeking air-conditioned spaces, while noting poor air quality. The heat could stress power, transit and water systems, and a Capitol Fourth concert will open later due to the conditions. Isolated storms are possible later today, with a more widespread risk of severe storms and potential flash floods over the weekend that could affect Fourth of July plans.