The fluctuating layer of smoke in our atmosphere meant that the expected blue skies in the evening and morning have taken on ...

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...

More than 200 wildfires are blazing across central and western Canada, half of which are out of control because they’re so ...

Big wildfires in Canada are sending smoke into parts of the U.S. this weekend. Experts say this could affect people's health, ...

States across the border issued air advisories about particulate pollution that are expected to last for several days.

There's a haze in the sky across a large portion of the Midwest. The smoke coming from more than 210 fires burning in Canada, ...

Much of Ontario remains under special air quality statements or warnings today amid smoke from wildfires burning in other ...

An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...

The pictures shared by Ayers from the International Space Station (ISS) show the extent of the wildfires which has degraded ...

Smoke from wildfires in Canada is making it harder to breathe in Ohio and several other states. Here's how long it will last ...

Almost the entire country, including Montreal, is under an Environment Canada air quality warning or special weather ...

The pull of the foul air to Northern California was significant enough that the Bay Area Air District issued an air quality ...