Have smog levels in the U.S. been higher or lower so far in 2009?



  1. 0 Votes

    I checked a number of places, including the EPA, and it seems that this information has probably not been completely tallied yet for 2009. The link below shows the data from 1970 to 2008. In almost all cases, the levels of pollutants have gone down and were lower in 2008. This would be the place to keep checking to see if the 2009 data has been posted. The Excel chart that is with 1970 – 2008 Average annual emissions, all criteria pollutants in MS Excel is what shows the pollutants in a table.

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