"This means that everyone should stay indoors, avoid all strenuous activity, close windows & doors".
Air-quality readings are off the chart in parts of Metro Vancouver and the Fraser Valley as smoke from B.C. wildfires heads south.
"Elite athletes will face difficulties breathing, some early exhaustion, and in extreme cases if they're also dehydrated, they may experience confusion from difficulty breathing the air", Corneil said. "You see the number of forest fires increasing, and so there's going to be wildfires", Wineke said. Current air quality levels in Darrington are UNHEALTHY for everyone.
The air quality was so bad that everyone, regardless of physical condition or age, will likely be affected, according to the Spokane Regional Clean Air Agency.More news: Paul Pogba: Man United Fans Should Be "Very Mad"
The fires burning near the Nadina, Shovel and Tesla lakes in the Bulkley-Nechako region remain the largest in the province at more than 1,600 square kilometres combined.
And it isn't just B.C. that is impacted.
Wildfire smoke originating in Canada is now clouding the skies over central and northeast Minnesota.
Seattle's Space Needle has been swathed in haze, and it was impossible to see nearby mountains Monday.More news: Beating King of Pop, Eagles have No.1 album of all
All athletic practices for Tacoma Public Schools have been moved indoors, a district spokesman said.
The national air monitoring group AirNow released a map Sunday showing conditions in Washington and, directly north of the border, in Canada to be the worst on the North American continent. The smoky pollution, even in Colorado, came from wildfires in British Columbia and the Cascades.
Planes at Seattle-Tacoma International Airport were grounded for a few hours Sunday due to low visibility, according to the Federal Aviation Administration.More news: Windows Phone's terminal wind-down: Microsoft sets new sunset dates