Smoke from ongoing Canadian wildfires has led to some of the worst air quality in the world across parts of the U.S.

When combined with the Philly area’s warm, sunny weather, the incoming smoke stands to increase levels of ozone, the ...

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

An air quality advisory was sent out to New Yorkers for Monday, when smoke from wildfires in Canada is expected to reach the ...

The state of Minnesota is entering another in a long string of summer days marred by air quality alerts. Poor air quality ...

As the air quality in Minnesota remains dangerous, experts are giving advice. "It's not a one-size-fits-all answer," said Dr.

Minneapolis had the fifth worst air quality among 125 cites worldwide on Saturday morning, according to an international air ...

Skies over much of Minnesota looked clearer and smelled cleaner Sunday as the most troublesome air from Canadian wildfires ...

The smoke is expected to remain over the northern and central Plains of the United States for the next couple of days, ...

The air quality in Minnesota has never been so bad for so long. Experts recommend limiting outdoor activities.

Air quality will deteriorate across 12 states through Saturday, mainly in the Upper Midwest, as wildfire smoke pours into the US from northwestern Canada brought by the cold front that is ushering in ...