Ask A Scientist© Weather Archive

 >   name        bill
 >   status      other
 >   age         30s

 >   Question -  is there a web site that might have the barometric pressure
 > for each day for the last year or so (for chicago area)?
 >


>Yes, this is easy - see the Argonne National Laboratory Environmental
>Research Division, Atmospheric Section data page at
>gonzalo.er.anl.gov/ANLMET/text (the ANLMET must be in caps). There you
>will find the last several years of data. Click on the 2000 link, for
>instance, and you will find links for each month. Go into one of those
>links and you will find data for each day of the month. At the very
>bottom of the listing are two summary tables, one with hourly averages
>and the very last one with daily averages (which is what you probably
>want). The pressure (title BAROM PRESS) is in kilopascals (kPa).
>Multiply by 10 to get millibars, or multiply by 0.2953 for inches of
>mercury.

Dr. Cook
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