Smoke produced by hundreds of wildfires burning across Canada has drifted thousands of miles and nearly circled the entire ...

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

Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast ...

Air quality alerts from Canadian wildfire smoke spread to the Northeast on Sunday, stretching as far as northern Maine. It ...

This is the second most severe fire season on record in Canada, according to the National Interagency Fire Center.

While alerts have been downgraded from 'unhealthy for sensitive groups' to 'moderate,' the air quality could still be a ...

Viewers shared snapshots of hazy skies as Canadian wildfire smoke continues to impact air quality in parts of Maine.

Temperatures are expected to climb into the low 90s by Monday afternoon in New York City, Boston and Washington, D.C.

This is why even without the presence of smoke, many sunrises and sunsets appear yellow or orange. Smoke particles in the sky ...

Millions of Americans across the Midwest, Northeast and swathes of the South and Southwest are under air quality alerts Monday. Newsweek's live blog is closed.

PORTLAND (WGME) -- Sunshine, seasonable temperatures, and low humidity levels are all on tap for Wednesday in Maine. Wildfire smoke is beginning to thin out as well over eastern New England. The smoke ...

PHILADELPHIA (WPVI) -- Smoke particles from Canadian wildfires are causing air quality concerns in the Philadelphia region on ...