An Air Quality Alert for Chicago and the suburbs has been extended through Friday as smoke from Canadian wildfires continues to blanket the area and push the AQI into red levels. The National Weather ...

Still, commonly used air quality tracking pages like AirNow.gov showed air quality levels were good Wednesday. On Thursday, they rose to "moderate" levels. So why didn't it match up? According to ...

Smoke from wildfires burning in Canada, North Dakota and Minnesota is expected to hit the Chicago area Friday, but what will that mean for the region's air quality? The wildfire smoke is expected to ...

Despite better air on Friday in Chicago, the city remains under an air quality alert. It remains among the most unhealthy in the world due to the wildfires burning in Canada. So, how is air quality ...

What is an Air Pollution Action Day? A Chicago area Air Pollution Action Day is declared when the ozone and/or particulate levels in the air are expected to be at or above the Unhealthy for Sensitive ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. The U.S. Air Quality Index (AQI) is the ...

Since then, the AQI has gotten a bit better, but this does beg a couple of questions: How do I keep myself safe during poor air quality days? How does poor air quality affect my health? “Trailblazer” ...