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Worst Air in the World?

January 15, 2014

airqualityguy

We hear in the news about horrible air quality in the developing world.  Stories about Chinese air quality are everywhere.

Here in the Central Valley it is conceded that we have the worst air in the nation but surely it is far better than  places like China.  So, let’s make the comparison.

Who had the worst air over the holiday season, Beijing, China or the Central Valley of California?

The chart below gives the 24 hour PM 2.5 values from the US Embassy monitor in China and the same values for monitors in the southern half of the San Joaquin Valley between Fresno and Bakersfield.china v central valley

The time period is three weeks surrounding the holiday season in the US from December 16, 2013 to January 5, 2014.

Using the 100 micrograms per cubic meter mark to separate really bad air from absolutely killer air, there were seven days when you would…

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