Looks like smoke will settle in the Methow Valley tonight, perhaps degrading air quality to the unhealthy range.
Light NW wind Friday AM should clear the air a bit, but the light SW and variable winds may allow smoke to build up again.
Pattern may repeat until a Tuesday evening when the long range forecast predict a cold front out of the NW…more to follow.
You can see the plume originating from the top of Lake Chelan. http://sat.wrh.noaa.gov/satellite/showsat.php?wfo=pqr&area=west&type=vis&size=1
and earlier today, http://ge.ssec.wisc.edu/modis-today/index.php?satellite=t1&product=true_color&date=2015_07_30_211&overlay_sector=false&overlay_state=true&overlay_coastline=true§or=USA1&resolution=1000m