<![CDATA[Philadelphia Summer 2010 – Just As Hot As 1828]]>Philadelphia’s “hottest ever summer” of 2010 averaged 78ºF from June-August. That is just as hot as it was June-August, 1828. When CO2 levels were 290 ppm.

From The Harvard University Library

The weather that summer was almost identical to 2010

June 1828 – 77 degrees
July 1928 – 80 degrees
August 1828 – 76 degrees

June 2010 – 76 degrees
July 2010 – 80 degrees
August 2010 – 77 degrees

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