January 11, 2019 11:10 a.m.
The Oregon Department of Environmental Quality is issuing an air quality advisory for much of the state.
A release from the agency said the southern Willamette Valley, parts of central and north central Oregon and eastern Oregon are under that advisory, which is in affect through early to mid-next week.
Forecasters expect air quality to deteriorate due to an extended period of stagnant air. During such conditions, smoke can be trapped at ground level where people breathe.
The advisory is in place for the southern Willamette Valley and for Malheur, Harney and Baker counties through Monday. In other locations impacted, the advisory is in place through Wednesday.
The DEQ release said people in the affected areas should refrain from outdoor burning and use alternatives to woodstoves if other heating options are available.
Check the current air quality conditions by going to http://www.deq.state.or.us/aqi/
The Umpqua Valley is not under the advisory. It stretches as far south as Cottage Grove.