NAIROBI, KENYA / RankWire.AI / – A new global assessment reveals that coordinated efforts to combat climate change and reduce air pollution can generate approximately $15 in economic benefits for each $1 invested. The assessment was published on September 7 by the UN Environment Programme and Climate and Clean Air Coalition. It reviews 25 measures targeting key sources of emissions and pollutants. This report is recognized as the first comprehensive global economic evaluation of integrated climate and clean air actions.
Projections suggest that these measures could deliver annual economic gains equivalent to 2.8% of global GDP by 2035. By 2050, the benefits increase to 4.5%, and by 2100, they could reach 11.4% if fully adopted. Even without accounting for non-market welfare improvements, the measures are expected to yield around $4 in benefits for every dollar spent. The report also highlights that delaying implementation by one year could result in losing more than $1.5 trillion annually in combined benefits.
The 25 strategies encompass areas such as energy, fossil fuel systems, industry, transport, agriculture, residential energy, and waste management. They involve expanding renewable energy, enhancing energy efficiency, promoting cleaner cooking and heating solutions, advancing electric vehicle adoption, and tightening vehicle emissions standards. Additional measures target oil and gas leaks, routine venting and flaring, fertilizer application, livestock management, rice cultivation, and crop residue burning. The package also emphasizes improved waste handling and reductions in hydrofluorocarbons and other climate pollutants.
Major sectors stand to gain economically
Addressing air pollution is integral to economic planning because of its impacts on health and productivity. The assessment links human-caused outdoor air pollution to approximately 6.4 million premature deaths globally in 2025. Household air pollution contributed to another estimated 2 million premature deaths, including around 300,000 children. Outdoor pollution also played a role in 5.5 million new childhood asthma cases and 2 million new dementia diagnoses during that year.
Implementing all measures fully could prevent 144 million premature deaths related to air pollution by 2050. This total includes 96 million deaths associated with outdoor air pollution. The assessment estimates hundreds of millions of fewer cases of chronic diseases as well. Immediate adoption of these measures could halve global carbon dioxide emissions by 2050, reduce methane emissions by 60%, and cut several major air pollutants by roughly 70% compared to baseline projections.
Climate and health advantages intersect
The modeled package could limit global warming to about 0.34 degrees Celsius by 2050 and 1.4 degrees by 2100. By the end of the century, emissions of major air pollutants could decrease by as much as 85% under the scenario. The costs associated with implementation are 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 indicates that stronger enabling conditions could accelerate full implementation by as much as ten years.
UN Environment Programme and Climate and Clean Air Coalition unveiled these findings on the International Day of Clean Air for blue skies. The report highlights that institutional barriers significantly hinder wider adoption of existing measures. It suggests that overcoming these conditions could generate savings of up to $10 trillion by 2040. The findings integrate climate policies, air quality, health expenditures, and productivity within a single economic framework that includes measures already available across key sectors.