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.

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

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

Tuesday will be a 7 on Santom's Sky Scale due to cooler-than-normal temperatures as well as more wildfire smoke.

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

Emily Pike shows you what to expect as more wildfire smoke will enter into the region. Authorities locate child missing for 7 ...

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

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

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.

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

Maine's air quality continues to suffer from lingering Canadian wildfire smoke, so we asked a health expert why exposure to ...