The Clean Air Campaign says a high level of ozone will make the air unhealthy for sensitive groups. That includes children, people who are sensitive to ozone and those suffering from heart disease or lung ailments.
They are advised to limit their time outdoors during the late afternoon and early evening, when ozone levels are typically highest.
Gainesville is included in the smog alert.
(AccessNorthGa.com's Ken Stanford contributed to this story.)
http://accesswdun.com/article/2011/5/238827