Small particles can get lodged in crevices of organs from lungs to arteries, causing inflammation and other health issues.

Minnesota and Canada share so much: frigid winters, a love for hockey — and more recently, massive plumes of toxic wildfire ...

Smoke from hundreds of wildfires in Canada has choked the skies over dozens of northern U.S. states in the Great Lakes and ...

The wildfire areas of Manitoba and Saskatchewan are projected to receive 50 millimeters to 100 millimeters of rain this ...

Hazy skies settled over Hampton Roads this week as smoke from wildfires in Canada and the West moved over the region. The ...

Smoke drifting south from Canadian wildfires has made skies in Pennsylvania and other states hazy this week. The Pennsylvania ...

Smoke from wildfires in Canada continue to impact Greater Akron. An Air Quality Alert has been issued for northern Ohio for ...

Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air for at ...

An air quality alert is in effect for all of Massachusetts as smoke from Canadian wildfires descends into the Boston area.

The wildfire smoke that blanketed Michigan this summer and part of 2023 could take a toll on Michiganians long after clearing, medical experts said.

Officials warned young children and those with respiratory illnesses to take precautions. For weeks, smoke from Canadian ...

Canadian wildfire smoke will lend a hazy appearance to the sky, and high clouds blanket much of the Philadelphia region, ...