The smoke drifting across the border contains fine particulates, pollution so small that it’s basically invisible to the ...

The EPA says if you are sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are outdoors.

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

Wildfire smoke is particularly harmful to kids’ respiratory health. One study found that a 10-unit increase of fine ...

The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.  Air ...

Massachusetts can expect hazy skies on Wednesday as smoke from Canadian wildfires continues to drift down the East Coast, ...