MANY MINDEDHeat Stress Burden on Children
Climate change has created conditions where 583 million children under ten globally experience at least 20 attributable heat-stress days each year—44% of all children in this age group. South Asia, Southeast Asia, and West Africa bear the highest burden due to rapidly growing populations with high proportions of young children. A heat-stress day is defined as any day with a wet-bulb globe temperature exceeding 28°C, a threshold linked to increased mortality risk. This exposure stems from current climate conditions with 1.3°C of human-caused warming (as of 2023), and the study projects that 13% of children under ten would face 100+ heat-stress days annually by 1.5°C warming and 23% by 2°C warming under the SSP2 scenario.
The mechanism is direct: extreme heat exposure strains child health systems and increases mortality risk. Children under ten face greater heat-stress exposure than any other age group, meaning healthcare access becomes more difficult as heat-related illness rises. This creates friction for health security—children who need care during heatwaves may lack access to cooling resources or timely medical intervention.
This burden moves health and security needs by making child survival more vulnerable to climate disruptions. As heat stress escalates, communities face higher costs for emergency healthcare and reduced capacity to respond to heat-related illness. The most immediate impact is on children’s ability to access basic health services during extreme heat events.
What to watch: Urban heat island effects and localized city variations are not captured in this study due to data limitations. Future warming scenarios could significantly increase exposure, particularly in regions with high youth populations. The study’s projections assume SSP2 climate pathways—current warming trends may accelerate this risk faster than modeled.
Source: Carbon Brief