Until then, air quality levels can be expected to oscillate between unhealthy and moderate.
A thick, smoky haze has returned to Metro Vancouver and the Fraser Valley, and the Air Quality Health Index (AQHI) in many areas is as high as it has ever been in recent years.
Officials have extended the air quality advisory for the Bay Area through Tuesday, saying they expect winds to blow smoke into the area.
Sunday's weather sees the continuation of the a special air quality statement for Metro Vancouver. Air quality was improving in eastern Montana.
It is due to smoke from more than 500 forest fires blowing across the Canadian border, blanketing large areas of the Pacific Northwest.
For those wanting a break from the smoke, Saxton said indoor spaces with air conditioning tend to have the cleanest air.
Fire information officer Chris Wyatt said Monday unsettled weather is expected for the next few days with the possibility wind gusts of up to 35 miles per hour on mountain ridges.
For more info on the smoke and how it affects your health, visit the Washington state Smoke Blog.
A wider air quality warning is forecast to remain in effect through at least noon Tuesday. Air quality statements have been issued for Alberta, Saskatchewan and Manitoba, as well as northwestern Ontario.
The Wildfire Service said about 550 fires were burning in the province, but there weren't many lightning strikes over the weekend and that gave crews a chance to concentrate on some of the 54 blazes that were threatening people or property.
Many monitoring stations in B.C. are reporting AQHI health risk levels in the high to very high range, with some modest improvement expected in the next few days over the interior, but worse conditions along the coast as winds shift.