2010-08-29T16:29:00-04:00 w-nws.webmaster@noaa.gov Air Quality Alert issued August 29 at 4:29PM EDT expiring August 31 at 12:00AM EDT by NWS Baltimore/Washington http://www.erh.noaa.gov/lwx/ 2010-08-29T16:29:00-04:00 w-nws.webmaster@noaa.gov Air Quality Alert issued August 29 at 4:29PM EDT expiring August 31 at 12:00AM EDT by NWS Baltimore/Washington http://www.erh.noaa.gov/lwx/