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Global Station-Based Standardized Precipitation Index (SPI)

Associated Agencies

National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI)

Weather data from stations around the globe are used to calculate the current Standardized Precipitation Index (SPI) for each station.

How to

How to use this site:

  • Select a layer from the menu on the right of the interactive map
    • Choose from GPCC 1-month, 2-month, 3-month, 6-month, 9-month, 12-month, 24-month, 36-month, 48-month, 60-month, and 72-month SPI
  • To save image, click the printer icon in the top right of the map. Select a format (PDF, JPG, etc.) and click "Print."


Global Drought Monitor: Global Drought Information System (GDIS) interactive map showing global drought conditions (including SPI)

Representative Image
Global SPI map