Overview
- A Salurbal-Clima analysis of 326 cities projects heat-related deaths rising from about 0.87% to 2.06% of all deaths in 2045–2054 under moderate warming and population aging.
- A World Weather Attribution and Climate Central report estimates roughly 57 fewer extreme-heat days per year compared with a no-Paris scenario if current commitments are met.
- Even with those pledges, the world would face about two extra months of extreme heat each year with significant impacts on health, work, livelihoods and infrastructure.
- Heat already causes around 500,000 deaths annually worldwide, with the greatest risks for older adults, low-income communities and outdoor workers.
- Experts say many deaths are preventable through heat-action plans, early-warning coverage, expanded green space and urban ventilation corridors, yet planning and financing remain insufficient.