There's good news and bad news. The report gave Champaign County an "A" in particle pollution. In fact, it's one of the cleanest counties in the U.S.
But, when it comes to ozone, the county isn't doing as well. That's pollution which comes out of car tailpipes and smokestacks. State of the Air shows Champaign County had eight days between 2010 - 2012 where the amount of the ozone in the air was unhealthy.
People say they're surprised to hear that. A source at the American Lung Association says 2012 was the year of the unbearable heatwave. He says that's probably what caused a spike in unhealthy days which led to the bad grade.
Other counties on the list: Effingham got a "B" in ozone days; Macon got a "C"; Sangamon got an "F."
Copyright 2016 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.