An Air Pollution Action Day was called Wednesday morning for the Chicago area and is in effect until midnight, weather ...

To check your state's air quality, visit AirNow's website, and plug in your zip code, city or state. Here's what to know as ...

A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

Smoke from more than 100 wildfires blazing in Canada is expected to spread to impact air quality in more U.S. state.

Canadian wildfire smoke has entered the Upper Midwest and poses significant health impacts in the hardest-hit areas.

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

Smoke from the Canadian wildfires continues to bring dangerous air quality to parts of the northern U.S., with hazy skies ...

Wildfires in Canada are expected to bring smoke and affect air quality in states across the midwest, including Wisconsin, ...

The Canadian wildfires are wreaking havoc on our northern neighbors very hard this week. That smoke has now made its way to ...

Officials issued an alert Wednesday as air quality was expected to reach unhealthy levels in all of Wisconsin until noon Thursday. Sensitive groups should consider moving all activities inside ...

The Wisconsin DNR says air quality levels have improved from “unhealthy” to moderate, but that doesn’t mean the risk is over.