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

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

As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts ...

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 ...

The scale and intensity of the fires have had transboundary effects. Smoke from the blazes has drifted across the border into ...

Residents of central Pennsylvania should prepare for hazy skies and reduced air quality today as wildfire smoke from Canada ...

Prepare for a challenging week of wildfire smoke, increasing heat and potential thunderstorms across the state through the ...

Hundreds of wildfires in Canada are creating unhealthy air quality conditions across the Midwest, including Michigan, where ...

With Canadian wildfires seemingly out of control, states from Wisconsin to Maine and as far south as Pennsylvania and ...

Why is the air quality bad right now? Smoke from wildfires spreads to the Midwest, Northeast and southern California in the U ...