On Monday at 3:53 p.m. an updated air stagnation advisory was issued by the National Weather Service in effect until Friday ...
Dense fog and an air stagnation advisory affect Portland and Vancouver areas, causing poor visibility and potential pollution ...
The month of November is ending dry, cloudy, and cool across the greater Portland, Vancouver metro area Saturday.
"Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen," the NWS advised.
Dense fog including freezing fog will reduce visibility with the potential of icy patches from heavy frost and freezing fog.
Southwest Washington and the Portland area can expect stagnant air through the weekend, according to the National Weather Service in Portland.