Smoke to south, smoke to the north, smoke to the east and then some ozone

First things first. No major smoke impacts in the state right now and air is mostly Good, although there are areas of Moderate air close to fires in eastern WA and over western WA this morning. Here's yesterday's satellite picture overlaid with air monitoring data

Smoke to the south
Mainly from fires in southwestern Oregon, this smoke will remain to our south for the next few days.

Smoke to the north
The same northerly windflow that keeps the Oregon smoke at bay will push the Siberian wildfire smoke closer to Washington. As can be seen above, the northern BC air quality monitors didnt show very poor air yesterday, so a lot of this smoke might just remain aloft. However this morning's readings and satellite pictures suggest some smoke over western Washington, leading to Moderate air. Winds seem to move most of the smoke east of the Cascades but since none of the forecast models are seeing this smoke as yet, it is hard to say how much of it will mix to the surface. Expect air over the metro areas to be a mix of Good, Moderate and Unhealthy for Sensitive Groups through Friday at least.

The northerly flow will last through the weekend so the potential for Siberian smoke- depending on how much of it is present to our north- remains a risk, particularly in eastern WA. Winds shift a bit by Sunday and there might be enough of a southerly vector to transport some Oregon smoke into Western WA by then. Bears watching.

Smoke to the east
Several fires have been detected. One near the Okanogan County/ British Columbia border will likely be sending smoke into the Omak and Methow areas for a few more days. Expect periods of Moderate and USG air.

And finally, elevated ozone levels were observed in the Tri Cities yesterday (minimally influenced by wildfire smoke) and could be present again today. More on that topic in a newspaper article from a few days ago.