Canadian wildfire smoke is affecting air quality in parts of Michigan. The EPA's air quality index (AQI) uses a color-coded scale to inform the public about air quality and associated health risks.

Check out FOX 2’s real-time St. Louis area Air Quality Index (AQI) dashboard. Our tool displays current air quality readings from multiple locations around the metro area, including Granite City, ...

Smoke from Canadian wildfires enveloped the Tri-State Area leading to an air-quality alert that was extended through the weekend. "Air quality is unhealthy for sensitive groups, including older adults ...

That's why many Coloradans take notice when something, like wildfire smoke or smog, affects our bluebird skies. So, what ...

The hazy skies in the Chicago area are the visible sign of the poor air quality on Thursday as smoke from Canadian wildfires sent Chicago to the top of the list of most polluted cities in the world.