Canada wildfire smoke is impacting air quality across a dozen U.S. states, primarily in the Northeast and Great Lakes regions. Air quality is expected to remain poor through Wednesday, Aug. 6 ...

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 ...

States' air quality is measured by the EPA's U.S. Air Quality Index, according to AirNow's website. Values with an index of 151 to 200 are deemed unhealthy for all.

Here's where Canada wildfire smoke is impacting the U.S. See map of Canada wildfires Air quality index See air quality levels across the U.S. Contributing: Julia Gomez ...

Hundreds of wildfires continue to burn across Canada, where nearly 3.5 million acres have already been scorched this year — putting the country on pace for one of its worst fire seasons in decades.

Why is the air quality bad in Ohio? Canadian wildfires Canada has 59 uncontrolled wildfires and 108 controlled wildfires burning as of Monday, Aug. 4, USA TODAY reports.

Smoke from ongoing wildfires across Canada continued to drift into parts of the United States on Wednesday, causing hazy skies and triggering air quality alerts in multiple states across the upper ...

New York City air quality is dropping as Canadian forest-fire smoke swirls down the Hudson River, shrouding much of the eastern half of the continent in a haze. Air-quality alerts have been posted ...

Smoke from western U.S., Canada wildfires causes air quality concerns Smoke from Canadian wildfires is causing air quality concerns and hazy skies for many Americans in the Midwest and Northeast ...