The American Lung Association's State of the Air report on America's most polluted cities is out. Here's a summary (pointer via Planetizen).
Six out of ten Americans live in urban
areas where air pollution can cause major health problems ... Despite
America's growing "green" movement, the air in many cities became
dirtier during the past 12 months. The research names Pittsburgh, Los
Angeles and Bakersfield as the most polluted US cities. The report finds that air pollution hovers at unhealthy levels in
almost every major city, threatening people's ability to breathe and
placing lives at risk ...
Many cities, like Los Angeles, New York, Atlanta, Charlotte,
Philadelphia, Washington, DC and Baltimore have made considerable
improvements in their air quality over the past decade. People living
in some of these cities however, are breathing even dirtier air than
what was reported in the Lung Association's previous report. Only one
city, Fargo, North Dakota, ranked among the cleanest in all three air
pollution categories covered by the research.
Maps of the most polluted cities are here; the cleanest cities here.