WMAQ-TV last night ran a story based on an American Lung Association report on air pollution. Chicago and Lake County received “F’s.”
McHenry County got a “A” on particulate matter and a “C” on ozone.
The air quality monitor in McHenry County is at Cary-Grove High School.
Ozone measurements come from “2010, 2011, 2012 AQS hourly ozone data.”
“8-hour maximum concentration for each ozone-monitoring site” was calculated.