Maryland June 29, 2023 6:12 am See it: Thick haze settles on National Mall during code red air quality alert The D.C. area is under a code red air quality alert. News4’s Megan McGrath reports on conditions from the National Mall. Local 2:07 Easterseals' ‘Walk With Me' at National Harbor 0:37 Metro announces holiday season maintenance closures 1:19 Howard vs. Hampton ‘Truth & Service' Classic 1:49 Hotel agrees to increase security after string of crimes 1:43 Residents displaced from Columbia Heights apartment building after explosion