The smoke particles have already reached high into the atmosphere, so they won't cause health problems or unusual odours. The most colourful sunset is expected on Tuesday evening.
The B.C. Wildfire Service says the cold front in northern B.C. is expected to generate strong winds, thunderstorms and the potential for dry lightning in the region plagued by drought.
The Tustumena Lake fire in Alaska is 25% contained, with efforts including smokejumpers and over 56,000 gallons of water deployed to combat the 35-acre blaze.
Denali National Park has closed to visitors due to the rapidly spreading Riley Fire near its entrance, prompting evacuations and a significant firefighting response.
A fast-moving wildfire near Elliot Highway in Fairbanks, Alaska, has led to a Level 3 evacuation order for residents, with the fire rapidly growing to over a thousand acres.
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