The poor air quality continues to prevail in Illinois as Canadian wildfire smoke migrates south into the U.S. As a result, the Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Friday, Aug. 1. Here's what we know.

Smoke from Canadian wildfires has returned to Central Illinois bringing significant reductions in air quality to Central Illinois. Air Quality Alerts have been issued for much of the state through Friday.

Air quality sensors across northern Illinois have fallen 150, meaning air quality is now “unhealthy”. People with heart or lung issues, older adults, and children should avoid