The Oklahoma Department of Environmental Quality has declared an Ozone Alert day for Thursday, August 22, 2013.
It's only the third ozone alert for the Tulsa area this year.
On Ozone Alert days, DEQ advises people to reduce pollution by carpooling, walking or using Tulsa Transit. It also suggests people postpone their errands for another day and avoid mowing and using other gas-powered lawn tools.
The two previous Ozone Alert days in 2013 were June 13 and July 12.
In 2012, Tulsa experienced 21 Ozone Alert days. The year before that it was 25. In 2010, Tulsa had only five Ozone Alert days.
For more information and for tips on how to reduce pollution throughout the summer, go to www.OzoneAlert.com.