Wildfire smoke from Canada has made for bad air quality over parts of the Upper Midwest. Most of Minnesota had “unhealthy” ...

Summer temperatures and smoky skies are anticipated to converge over Greater Victoria midweek, intensifying early Wednesday ...

As we head into a sizzling week across Washington, we look at smoke conditions and air quality across the state impacted by ...

Canadian wildfire smoke lingers in Michigan. Officials issued an air quality advisory in southeast Michigan for July 15.

Wildfires continue to burn in Canada, and the smoke is filling communities there and towns across the U.S. border.

Smoke from Canadian wildfires is expected to drift into North Dakota again in coming days, potentially degrading air quality.

The Bay Area Air District on Sunday morning issued an air quality advisory due to possible wildfire smoke from Canada and Alaska.

PM2.5 pollution is spiking in many counties in Utah and is accompanied by the typical summer pollutant of ozone. It makes for a nasty mix of pollution.

Canadian wildfire smoke remains in Michigan. On July 16, officials issued an air quality advisory for western counties.

Much of the Upper Midwest on Saturday was dealing with swaths of unhealthy air because of drifting smoke from Canadian ...

Ontario's poor air quality and hazy skies will persist for the next couple of days for many areas, with widespread alerts remaining in place.