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

The Midwest saw some of the worst air quality conditions in the world Thursday, and similar conditions are expected to ...

The Iowa Department of Natural Resources reported Friday that air quality in Iowa will be at levels “unhealthy for sensitive ...

Wildfire smoke from Canada is blanketing the skies in the Midwest, leaving millions with dangerous breathing conditions.

Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian ...

Off and on through this summer, and especially in the past few days, Milwaukee's air quality measurements have deteriorated ...

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

Every air quality monitor in Minnesota is reporting red or unhealthy conditions for everyone, an official said.

There is an air quality alert for all of Southeast Michigan until midnight Saturday, the Michigan Department of Environment, ...

The elevated levels of fine particulate matter resulting from wildfire smoke could present significant health risks.

New York City, Long Island and the Hudson Valley will all experience air quality within the 101-150 range on the air quality ...