Smoke and grit from hundreds of forest fires have spread across large parts of Canada and the northern US, sending air quality across the Midwest and northeast US and Toronto to unhealthy levels.

Portland and the rest of the southern coast of Maine is under moderate conditions for Ozone Monday. Smoke from Canadian wildfires is being pushed through the state ahead of a cold front, according to ...

Despite increased tariffs imposed by President Trump on Canadian goods, Canadian Trade Minister Dominic LeBlanc affirmed ...

From British Columbia to the Northwest Territories and all the way east to New Brunswick, air quality alerts have been issued ...

Poor air quality is likely, along with obscured visibility. Use caution if doing strenuous activities, especially hiking. Tonight will be mostly clear and comfortable otherwise. Lows reach the 50s to ...