THE BRONX - A report from the American Lung Association says The Bronx has the worst air quality in the metropolitan area.

The group's 2010 State of the Air report gave the borough a failing grade when it came to ozone pollution. It also named the area the dirtiest county when it comes to short-term particle pollution.

Local grassroots groups such as Mother's on the Move are urging all residents to ban together and take small steps to improve air quality, including taking public transportation or riding a bike.