The toxic air in the United States this week has flirted with the upper range of the 500-point scale. In the past decade, there have been times when the air quality was even worse. By Jenny Gross New ...

Smoke from Canadian wildfires has impacted the air quality throughout United States, including in the northern High Plains, Midwest, Great Lakes, southern Mid-Atlantic and into the Northeast. This has ...

Smoke from Canadian wildfires is once again impacting Chicago’s air quality, with air quality index readings Thursday morning in the “unhealthy” category for some, according to government air quality ...

Wildfire smoke from Canada is impacting air quality in our region today (7/18/2023). The air is considered "Unhealthy for Sensitive Groups" or Code Orange on the air quality scale. This means that ...

An air quality alert remained in effect for the entire Chicago area Friday, with another "Air Pollution Action Day" alert declared as wildfire smoke from Canadian wildfires continues to impact parts ...

Smoke from Canadian wildfires is once again impacting air quality in the Chicago area, with air quality index readings Thursday morning in the “unhealthy” category for some suburbs, according to ...

It appeared that, as of Friday, Chicago-area residents wouldn't get a reprieve from poor air quality in the near future. As smoke from Canadian wildfires persisted, the National Weather Service ...