This dataset provides the Standardized Soil Moisture–Temperature Compound Index (SSTCI), a daily compound indicator designed to quantify compound dry–hot extremes (CDHEs) by explicitly modeling the statistical dependence between soil moisture deficits and temperature anomalies. SSTCI is produced at 0.1° spatial resolution with daily temporal resolution for the period 1961–2023 (365-day calendar; leap days removed). Data contents Main product SSTCI: daily gridded SSTCI values stored in NetCDF format. Variables The NetCDF file includes: SSTCI(time, lat, lon) — daily compound index (unitless; standardized) time — daily timestamps (365-day calendar; leap days removed) lat, lon — geographic coordinates (regular 0.1° grid) Spatial and temporal coverage Spatial resolution: 0.1° × 0.1° (global land grid) Temporal resolution: daily Time span: 1961–01–01 to 2023–12–31 (leap days removed) Missing values Ocean grid cells and locations without valid input data are stored as missing values (NaNs). Code availability The full source code used to compute SSTCI is publicly available at:https://github.com/Rukhshio/Standarized-Soil-Moisture-Tempreture-Compound-Index-SSTCI- A separate repository provides the CDHE event identification workflow and event catalogue generation:https://github.com/Rukhshio/Compound-dry-hot-extreme-CDHE-event-catalogue-