People in Southeast Alaska are starting to see smoke from Canada's record-breaking wildfire season — and there’s more to come. The air quality levels are still fair: hovering around 17, on a scale that goes up to 300.

Active fires in northeastern Ontario and eastern Manitoba are expected to send smoke across northern Quebec today and Wednesday, Environment Canada said in a special air quality statement posted for each of the region’s 14 communities.

A graduate student with the University of Alaska Fairbanks is installing air-quality sensors in rural and remote areas around the state to monitor wildfire smoke and other types of air pollution.

Environment Canada has issued air quality statements for parts of the N.W.T.'s Mackenzie Delta region, including Fort McPherson and Tsiigehtchic.

Smoke and soot from central Alaska wildfires have afflicted the subarctic city of Fairbanks with some of the world's worst air pollution in recent days, forcing many residents indoors and prompting one hospital to set up a "clean air shelter."

Air quality in Calgary remains poor as wildfire smoke blankets the city. The situation is expected to last through the long weekend.