Slideshow: 10 most polluted cities by ozone
Published On: Apr 25 2012 03:05:59 PM CDT
Updated On: Apr 25 2012 03:27:16 PM CDT
According to the American Lung Association’s new State of the Air 2012 report, Houston is one of the worst cities in the United States for ozone pollution. Take a look at where the Bayou City ranks in the top 10.
