Current PSD (Web/Data Status). PSD has undergone major URL restructuring so that all URLs start with http://www.esrl.noaa.gov/psd/ (More Info).
 

PSD Data and Data Products: Other sources of climate and weather data

 

There are many locations that archive and make available climate and weather data. Some of these datasets can be used directly through openDAP while for others, one must download data.

Meta Data Collections

Climate

Satellite

Marine

Ground Observations

Weather Forecast

Water and Snow Resources

General Public