Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air quality conditions across Eastern Canada and the United States.

Unhealthy air has invaded Minnesota, Wisconsin and North Dakota early this week as a new round of wildfire smoke from Canada has wafted into the region, choking out areas as far south as Chicago ...

Wildfire smoke and pollution is creating unhealthy air over Shasta County. Here's what you can do about it.

A haze of smoke from wildfires burning in Colorado wafted into counties along the Interstate 70 mountain corridor on Wednesday, prompting an air quality health advisory. The smoke is from four ...

Poor air quality from wildfire smoke has the potential to cause negative health impacts. Wildfire smoke contains very small particulate matter that is breathed deep into the lungs.

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

MESA COUNTY, Colo. (KREX) – With wildfires burning around the Western Slope, air quality concerns have grown in Mesa County. Mesa County Public Health is urging residents to be cautious while ...

TORONTO — Much of Central Canada, Manitoba and Saskatchewan were placed under special air quality statements or warnings on Monday due to smoke from wildfires, as Environment Canada advised ...

An air quality alert continues in Michigan through Monday due to wildfire smoke from Canada.

A stream of wildfire smoke from Northern California is moving toward the Bay Area Thursday, prompting an air quality advisory from the Bay Area Air Quality Management District.