This site is an effort by county, state, and Federal agencies and Indian Tribes to coordinate and aggregate information for Washington communities affected by smoke from wildland fires. The information is posted here by the agencies themselves while volunteers built and maintain the page.
This is the time of year when land managers and firefighters have a chance to safely use fire in a controlled manner to reduce fuel loads in the forest. Prescribed burning can benefit ecosystems, improve wildlife habitat, and lessen the chance of future uncontrollable wildfires and severe smoke episodes. Department of Natural Resources (DNR) regulates forestry burning in Washington and always attempts to keep smoke from impacting the public to any great extent. You can find out if there's an approved forestry burn near you by visiting this page: https://fortress.wa.gov/dnr/protection/burnrequests/
Also, for those of you on near or downwind of the east slopes of the Cascades, the Okanogan-Wenatchee National Forest maintains a nice interactive map that displays their planned and active burns at the link below. Note that you can zoom way in to see the perimeters of planned burns.