Sorry, you need to enable JavaScript to visit this website.

Air Quality for the Top 150 US Cities

OMI NO2 levels dropped significantly over the Aura period (2004-2014) over US cities.  Click here to see how much levels decreased over 20 US cities.  Check out our recent paper (Lamsal et al., 2015) that shows the correspondence of variations and trends in OMI NO2 levels and EPA Air Quality System (AQS) "nose-level" NO2 data.


Make your own plots!  Download either our ASCII file or our Excel file that contain monthly-averaged OMI NO2 data for a number of US metro areas from 2005 to 2016.  The file can be easily imported into Microsoft Excel, for instance.