Forecaster.Health is an open-access, pan-European early warning platform that issues Temperature Related Mortality Warnings across 580 regions in 31 countries. Each day, the system ingests observed and forecasted daily mean temperatures to bias-correct meteorological data, then applies region-specific epidemiological models—stratified by sex and age—to quantify mortality risk linked to temperature extremes. The calibrated models identify five risk levels (none, low, moderate, high, extreme) for both heat and cold events based on historical temperature-mortality associations.

By differentiating warnings by demographic subgroup, the tool captures higher heat vulnerability in women and increased risk in older age groups, enabling targeted public-health advisories. Forecast reliability extends up to 15 days in cold seasons and approximately 11 days in summer, though optimal action is advised within a 7-day window. Developed by ISGlobal under ERC funding, Forecaster.Health aims to expand its geographic coverage and health hazard scope—potentially including air pollution—bolstering climate resilience strategies across Europe.