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

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 ...

Firefighters bolstered containment on the Green Fire in the Shasta-Trinity forest, while the Orleans Complex grew. What to ...

Besides temperatures feeling in the high 90s, Chicago and surrounding areas are under an air quality alert until midnight, ...

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 ...