D.C.-area forecast: Excessive heat warning today, with a storm threat late  The Washington PostStay indoors: Another blazing, humid day with excessive heat warning in DC region  WTOPHEAT WEATHER ALERT| Triple digit feel like temperatures hit Baltimore  Fox BaltimoreUnhealthy combo of extreme heat and poor air quality for Maryland  WBAL TV BaltimoreDC heat advisory issued Thursday with temperatures near 100 degrees expected  FOX 5 DC