The air quality is reaching dangerous levels in parts of the Upper Midwest and north central U.S., where copious amounts of ...

Smoke spreading from wildfires in Canada​ was affecting air quality in multiple states, including Minnesota​ and Wisconsin.

Smoke from more than 100 wildfires blazing in Canada is expected to spread and impact air quality index in Minnesota.

Air quality alerts stretch from Alberta to parts of northern Ontario, according to Environment and Climate Change Canada, with some U.S. states also seeing advisories.

Air quality alerts remain in effect for yet another day for the entire state of Minnesota with concentrations of wildfire ...