NWS Pendleton via Facebook NWS Pendleton via FacebookNumerous wild fires in Washington have prompted an EMERGENCY state-wide burn ban until September 30th. As of Monday, August 10th, an Air Quality Alert is in effect across a large part of eastern and central Washington due to the dangerous smoke. Washington Department of Ecology Has Issued the Air Quality AlertWildfire smoke is the main concern, as fine particulate matter (PM2.5) can penetrate deep into the lungs. Some areas directly downwind of fires could reach VERY UNHEALTHY levels, while other areas could be unhealthy of sensitive groups. Get our free mobile appSmoke Is Expected to Persist Through the Coming WeekThe alert doesn't mean EVERY part of Washington has dangerous air at this moment.