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Historical Data to Analyze US Observing Sites

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clkotnik's picture
Historical Data to Analyze US Observing Sites

I hope this is not off-topic for this forum, but I struggled to find the right one.


I am interested in analyzing various sites in the US for astronomical observations.  I would like to use multiple publicly available datasets.  I am aware of the METAR dataset for weather including visibility and sky conditions at many airports.  I know that provides historical summaries of their FORECASTS.  I also see that the US National Weather Service provides sky cover summaries in various historical climate summaries for US locations.


I wonder what other sources of data people can suggest?


Clear skies,


AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484