Likewise, most of Wisconsin had been issued an air quality alert over Canadian wildfire smoke. "People with heart disease: ...

While it may improve a little bit later on today or tonight, I think the air quality could go back down again beginning Tuesday and perhaps into Wednesday,” AccuWeather Senior ...

Officials warn southeast Michigan residents to be careful outdoors Tuesday because of expected high ozone pollution levels.

Those living in impacted areas are urged to avoid excess physical exertion, particularly if they belong to a vulnerable group ...

Smoke from Canadian wildfires persisted across the Upper Midwest on Friday, prompting air quality alerts for millions.

A special weather statement and warning have been issued for southern Ontario on Wednesday. The heat warning continues with temperature highs around 32 C or 40 C with the humidex in the Greater ...