The most polluted US cities linked to health concerns
According to a report published on Wednesday by the American Lung Association (ALA), over 166 million people in America, more than 50% of all Americans, are exposed to unhealthy levels of either ozone or particulate pollution. This puts them at risk of premature death and other serious health problems, including lung cancer, asthma attacks and developmental harm. Despite lower ozone levels and long-term averages of particulates, the annual State of the Air report suggests global warming is causing short-term spikes in air pollution.

Select on a city name to view the rankings for your city, a chart of the trends for ozone and year-round particle levels over time, and information about how many residents are in each of the groups most at risk from air pollution. Note that some cities rank high on one list and don’t show up on other lists because of the differences in their pollution problems. Each city includes all the counties that form the economic and transportation network that makes up the metropolitan area as defined by the federal government.