California houses 8 of 10 cities most polluted in America

Eight of the USA's 10 most polluted cities, in terms of ozone pollution, are in California, according to the American Lung Association's annual "State of the Air" report, released Wednesday.

The Los Angeles/Long Beach area took the dubious distinction of being the nation's most ozone-polluted city as it has for nearly the entire 19-year history of the report.

Overall, the report said about 133 million Americans — more than four of 10 — live with unhealthful levels of air pollution, placing them at risk for premature death and other serious health effects such as lung cancer, asthma attacks, cardiovascular damage and developmental and reproductive harm.