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.

Hazy with unhealthy air statewideWarmer and more humid later in the weekChance of showers/storms returning WAUSAU, Wis. (WSAW) - The past several days have featured smoke and haze across the Badger ...

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 ...