"Local smoke levels may vary based on wind direction and fire characteristics but, until a significant change in the provincial weather pattern occurs, widespread air quality improvements are not expected".
Wildfire smoke blankets downtown Vancouver on Monday morning. The air quality level is expected to reach into unhealthy for sensitive groups. As seen on the images below, the index for Vancouver has unhealthy levels in nearly all areas.
Seattle's Space Needle was swathed in haze, and it was impossible to see nearby mountains. Portland, Oregon, residents who were up early saw a blood-red sun shrouded in smoke and huffed their way through another day of polluted air.
Forecasters are warning of unhealthy air for parts of the Pacific Northwest as winds push smoke from surrounding wildfires into the region.
All athletic practices for Tacoma Public Schools have been moved indoors, a district spokesman said. The smoky pollution, even in Colorado, came from wildfires in British Columbia and the Cascades.
It's a rare occurrence that also happened previous year, raising concerns for many locals that it may become normal during wildfire season. "Purple is very unhealthy and purple is hazardous".
There are 17 large fires burning on more than 300,000 acres across Washington and OR with about 8,200 fire personnel deployed, according to the Northwest Interagency Coordination Center.
Planes at Seattle-Tacoma International Airport were grounded for a few hours Sunday due to low visibility, according to the Federal Aviation Administration.
On Sunday afternoon, several monitors in north-central Washington state showed air quality at hazardous levels.
Environment Canada warns that the poor air can cause coughing, headaches, shortness of breath and throat irritation, specifically in seniors, children and anyone with cardiovascular or lung diseases.