NAIROBI, KENYA / RankWire.AI / – A new global assessment highlights that coordinated efforts to combat climate change and air pollution can generate approximately $15 in economic gains for each dollar invested. The evaluation was published on September 7 by the UN Environment Programme and the Climate and Clean Air Coalition. It analyzes 25 different measures targeting key sources of emissions and pollutants. This report is described as the first extensive global economic assessment of combined climate and clean air strategies.
Projections suggest that implementing these measures could deliver annual economic benefits amounting to 2.8% of global GDP by 2035. This figure is expected to increase to 4.5% in 2050 and reach 11.4% by 2100 if full deployment is achieved. Even excluding non-market welfare benefits, the measures are estimated to generate around $4 in value for every $1 spent. Additionally, the report warns that delays of just one year in implementation could result in forfeiting more than $1.5 trillion in combined yearly benefits.
The selected 25 measures encompass sectors such as energy, fossil fuel systems, industry, transport, agriculture, residential energy, and waste management. They include expanding renewable energy, enhancing energy efficiency, promoting cleaner cooking and heating methods, adopting electric vehicles, and tightening vehicle emissions standards. Additional strategies focus on reducing oil and gas leaks, controlling routine venting and flaring, optimizing fertilizer use, managing livestock and rice farming, and limiting crop residue burning. The package also emphasizes better waste handling and decreasing emissions of hydrofluorocarbons and other climate-affecting pollutants.
Significant economic advantages across various sectors
Air pollution remains a key factor in economic assessments due to its impact on health and productivity. The assessment attributes approximately 6.4 million premature deaths worldwide in 2025 to human-made outdoor air pollution. Household air pollution contributed an estimated 2 million premature deaths, including roughly 300,000 children. Outdoor air pollution also played a role in causing 5.5 million new childhood asthma cases and 2 million new dementia diagnoses during that year.
Achieving full implementation of the proposed measures could prevent a total of 144 million premature deaths linked to air pollution by 2050. Of these, 96 million are associated with ambient air pollution. The assessment further forecasts hundreds of millions fewer cases of chronic disease. Compared to the baseline scenario, immediate adoption could halve global carbon dioxide emissions by 2050, decrease methane emissions by 60%, and cut several major air pollutants by approximately 70%.
Climate mitigation and health improvements align
The modeled package is projected to prevent about 0.34 degrees Celsius of global warming by 2050 and 1.4 degrees by 2100. By the end of the century, concentrations of major air pollutants could decline by as much as 85% under the assessment scenario. The cost of implementing these measures is estimated at roughly 0.7% of global GDP over the next ten years, decreasing to about 0.5% by the end of the century. The assessment also suggests that strengthening enabling conditions could accelerate full implementation by as much as ten years.
The UN Environment Programme and the Climate and Clean Air Coalition issued these findings on the occasion of the International Day of Clean Air for blue skies. The report highlights that institutional barriers serve as significant hurdles to the wider adoption of existing measures. It estimates that addressing these enabling conditions could unlock savings of up to $10 trillion by 2040. The findings link climate policies, air quality, health costs, and productivity within a comprehensive economic framework that encompasses measures already available across major sectors.