As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts across the U.S.

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada continues to waft into the United States, creating hazy, gray skies over major ...

Breathing in polluted air for extended periods of time can pose a serious health risk for people, especially for vulnerable ...

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

Spain and Portugal were the worst-affected countries in Europe, which has seen its most destructive wildfire season in nearly ...

If you’ve looked outside and noticed a cloud of haze in the air, you’re likely witnessing the impact of the wildfires burning ...

Health officials from Minnesota to Maine have issued alerts warning of poor air quality from wildfires burning in Canada.

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's ...

Heavy surface smoke from wildfires in Canada is drifting across Minnesota on Monday, with unhealthy air quality levels ...

Air quality specialists in the state are starting to more closely monitor wildfire activity in Canada. Because of climate ...

Smoke from wildfires in Canada continue to impact air quality in the northern United States, even in the New York City metro area and Hudson Valley.

Conditions should begin to improve slightly by Wednesday and Thursday, Aug. 6-7, with mostly clear air expected by Friday, Aug. 8. Air quality index levels 0–50 - Good: Air quality is considered ...