The National Weather Service issued air quality alerts on Monday for millions of Americans in Wisconsin, Michigan, ...

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

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 ...

Detroit currently is ranked third worst worldwide for major city air quality today, Aug. 4, because of smoke from Canadian ...

New York and other neighboring states are under an air-quality advisory due to influx of smoke from ongoing wildfires in ...

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

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

New York City air quality is dropping as Canadian forest-fire smoke swirls down the Hudson River, shrouding much of the ...

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

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

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