NOTICE: Some of NCEI online systems will be unavailable on Tuesday, September 1 from 7:00 AM - 9:00 AM ET. We apologize for this inconvenience.
Weather Balloon Data
Integrated Global Radiosonde Archive (IGRA)
Radiosonde and pilot balloon observations at over 1,500 globally distributed stations for standard, surface, tropopause, and significant levels
Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC)
Station and regional-mean time series of temperature anomalies that extend from 1958 to present derived from radiosonde observations taken at globally distributed stations