This past Thursday should have been a beautiful day, a day to throw open the windows and putter in the garden, long-awaited ...

Wildfire smoke from Canada turned Chicago into one of the world’s most polluted metro areas as the Lollapalooza music ...

Air quality alerts have been issued across most of the Midwest, and hundreds of wildfires are burning across Canada.

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

The hazy skies in the Chicago area are the visible sign of the poor air quality Thursday as smoke from Canadian wildfires ...

Wildfire smoke drifting across the Great Lakes has caused air quality to plunge to hazardous levels in several states, ...

The "unhealthy" air, which ranks as level four of six on the Air Quality Index, comes after multiple consecutive days of air quality alerts.

Smoke from Canadian wildfires hovered over several Midwestern over the weekend, bringing warnings of unhealthy air for at ...

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

Video from the scene showed fire crews working to contain the fire as flames tore through the roof of one of the buildings.

Minneapolis faced severely degraded air quality, ranking among the worst globally due to smoke drifting from Canadian ...