The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

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

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring relief later in the week.

Meanwhile, these western wildfires are creating smokey skies for millions, from Los Angeles to San Diego and to Las Vegas. Air quality alerts are now in place for 10 states from M ...

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

Smoke from wildfires blazing across Canada is once again wafting over huge portions of the U.S. Midwest and worsening air ...

Minnesota is experiencing its longest air quality alert on record — seven days. The alert will remain in effect until noon on ...

Minneapolis has one of the worst air qualities in the world on Thursday morning, with officials warning the smoky air is ...

Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air ...

Republican U.S. Rep. Pete Stauber, who represents northeastern Minnesota, joined MPR News host Cathy Wurzer on Morning ...

Smoke and grit from hundreds of forest fires have spread across large parts of Canada and the northern US, sending air quality across the Midwest and northeast US and Toronto to unhealthy levels.

New York City air quality is dropping as Canadian forest-fire smoke swirls down the Hudson River, shrouding much of the ...