Preprocessed data to reproduce results in Pietroiusti et al. (2026), Age specific exposure to attributable heat stress (in review). Linked to the GitHub repository with code to reproduce results: rosapietroiusti/attr-hs: Age-specific exposure to attributable heat stress Data is obtained from wet bulb globe temperature (WBGT) data calculated from reanalysis datasets and CMIP6 GCMs previously bias adjusted and downscaled within ISIMIP3b to 0.5 degrees spatial resolution. Daily maximum indoor WBGT was calculated from daily mean specific humidity, daily mean pressure and daily maximum temperature. Wet bulb temperature was calculated using the method NEWT (Rogers et al.) Data includes: Daily exceedance probabilities of impact relevant WBGT and TX (daily maximum temperature) thresholds from GCMs estimated through empirical percentiles, in the pre-industrial period 1850-1900 and at present-day warming levels (30 years window), and at 1.5 and 2 degrees of warming, from historical + SSP3-RCP7 simulations. Parameters describing non-stationary monthly model of daily WBGT distributions based on reanalysis datasets from ISIMIP3a.