World Bank links air pollution to 5.7 million annual deaths

A new World Bank report, Accelerating Access to Clean Air on a Livable Planet, finds ambient air pollution causes 5.7 million deaths a year and costs nearly 5% of global GDP. For rapidly urbanising economies like India, the findings reframe air quality as a systemic development and financial-capital risk rather than a purely environmental concern.

The World Bank report finds that outdoor air pollution causes 5.7 million deaths annually, with 95% occurring in low- and middle-income countries, while costing nearly 5% of global GDP each year through health impacts, reduced productivity, and long-term cognitive effects. It notes that 99% of the global population breathes air exceeding WHO guidelines. The report models a feasible, affordable scenario in which the number of people exposed to PM2.5 levels above 25 µg/m³ could be halved by 2040.

Communities with limited healthcare access and high poverty rates bear the worst consequences, deepening existing inequalities, the report warns. The major pollution sources it identifies are household heating, cooking, transport, agriculture, and waste. Rapidly urbanising regions across Asia and Africa are flagged as facing the heaviest burden, placing economies with large urban populations and energy-intensive industry, such as India, squarely within the cohort exposed to the steepest health, productivity, and human-capital losses.

Governments are urged to treat air pollution as a systemic development challenge with financial and human-capital implications, rather than only an environmental issue. The report calls for integrated, cross-sectoral policy interventions, better data governance, and a combination of public and private finance. Entities should monitor how decisive action on emission sources can deliver co-benefits across public health, climate mitigation, and economic growth, and align investment toward halving exposure to PM2.5 above 25 µg/m³ by 2040.

Key figure — Economic toll: nearly 5% of global GDP lost annually to air pollution