Start Date: End Date: Published Date Data Date
Data acquired 2002 - 2011 720 x 536 PNG
Data acquired 2002 - 2011 1190 x 1082 1000 KB - PNG
With new regulations of ozone-forming pollutants, bad air quality days in the eastern United States have dropped.
NASA Earth Observatory map by Joshua Stevens, using ozone exceedance data courtesy of Chris Loughner, University of Maryland. Caption by Adam Voiland.
Published May 26, 2016 Data acquired 2002 - 2011