A WMS (Web Map Service) is available to get maps of the following main indicators:

GetCapabilities

WMS layers
Name GetMap GetLegendGraphic
SMI Anomaly (EDO)
Soil Moisture Index Anomaly (GDO)
fAPAR Anomaly (VIIRS) (GDO)
SPI ERA5 Short Term (GDO)
SPI ERA5 Long Term (GDO)
Combined Drought Indicator (CDI) v4.0 (EDO)
No Drought and Recovery CDI v.4 (EDO)
Combined Drought Indicator (CDI) v4.0 (all classes)
Low-Flow Index (LFI)
Ensemble Soil Moisture Anomaly (GDO)
GRACE TWS Anomaly (GDO)
Forecasts of Unusually Wet and Dry conditions (Multi-system) (GDO)
SPI CHIRPS Short-term (GDO)
SPI CHIRPS Long-term (GDO)
SPI GPCC (GDO)
Snow Mask (EDO)
Risk of Drought Impact for Agriculture (GDO)

Notes for GetMap requests