Ground-level ozone smog (smog) and fine particulate matter (soot) pollution irritate the airways and can cause breathing problems for anyone, but especially for people living with lung disease.
The Illinois Environmental Protection Agency (IEPA) monitors air pollution and issues warnings on days when air pollution is expected to rise to levels deemed unhealthy for sensitive groups. When air quality is predicted to be unhealthy for sensitive groups several days in a row, IEPA may announce an air quality alert.
Air Quality Email Notifications Illinois Air Quality Conditions