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

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

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.

Canadian wildfire smoke lingers over Michigan. As of July 30, the Upper Peninsula is under an advisory for unhealthy air.

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Smoke from wildfires in the Prairies is causing poor air quality and reduced visibility in the Hamilton-Niagara area and much ...

The highest concentration of low-level smoke will remain confined to northeastern Ontario, western Quebec, and into the Ottawa Valley through Saturday evening. These areas can expect degraded air ...