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

While the haze slightly lifted Saturday morning, air quality levels are expected to worsen across the Chicago area over the ...

An Air Quality Alert has been issued for parts of northern New York and Vermont today because of Canadian wildfire smoke.

Friday’s air in Dhaka was classified as ‘unhealthy for sensitive groups,’ referring to a health threat, according to the AQI index. Though the air quality had been ‘moderate’ over the past few days, ...

You may have noticed some haze in the sky, as well as a cherry red sunrise this morning. Here's what to know about air quality in the area.

An Unhealthy for sensitive groups, or orange AQI category covers western Minnesota, as well as southern Beltrami, Cass, Crow Wing, Aitkin and Pine counties.

WGN-TV Chief Meteorologist Demetrius Ivory joins Lisa Dent to discuss why ground-level ozone is especially dangerous during the summer months. With air quality currently listed as unhealthy for ...

Northern areas could briefly hit "Very Unhealthy" levels. Officials urge sensitive groups to move all activities indoors and for everyone else to limit outdoor exertion.

"Warming temperatures and light winds may allow ozone to reach levels that are unhealthy for sensitive groups on Thursday," the NWS notice said.

When wildfires burn, the smoke can travel long distances and degrade air quality far away, which presents risks for those ...

An orange reading signifies the air is unhealthy for sensitive groups such as asthmatics and others with heart or lung diseases, as well as seniors and the very young. To keep tabs on the AQI ...