As of June 7, 2010, there were 50 ozone
(8-hour 1997 Standard), 1
carbon monoxide, 9 sulfur dioxide, 46 PM-10, 39 PM-2.5 (1997
Standard), 31 PM-2.5 (2006 Standard), and 2 lead nonattainment
areas in the United States. There are no NO2 nonattainment areas
in the United States. Maps of the ozone,
carbon monoxide, sulfur dioxide, PM-10, and PM-2.5 nonattainment
areas are on this web site for your review and download.
