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How much worse is the air in China and India than the US?

Still think the US is driving the bus?


Ranked: Air Pollution by Economy


By Jenna Ross, Visual Capitalist

GRAPHICS & DESIGN

Published March 7, 2023

The following content is sponsored by The Hinrich Foundation



Global air pollution declined by 31% during the initial COVID-19 lockdowns, demonstrating a link between economic activity and air quality.


This graphic from The Hinrich Foundation, the fourth in a five-part series on the sustainability of trade, explores how air pollution varies by economy. It pulls data from the 2022 Sustainable Trade Index, which The Hinrich Foundation produced in collaboration with the IMD World Competitiveness Center.


What is Air Pollution?

In this dataset, air pollution is measured using fine particulate matter known as PM2.5. These particles are less than 2.5 microns in diameter, which is about 28 times smaller than the diameter of human hair. They are made up of things like combustion particles, compounds, and metals.


Not only does their presence cause the air to become hazy, they also pose the greatest health risk compared with any other pollutant. When they are inhaled into the lungs, they can cause respiratory diseases and even death. In fact, air pollution is one of the world’s leading risk factors for death, and is linked to 12% of deaths globally.


A Geographic Breakdown of Pollution

Air pollution levels have a wide spectrum around the world. Countries with lower GDP per capita tend to have higher pollution because they have less stringent air quality regulations, congested transportation systems, and rapidly developing industrial sectors. They also prioritize basic necessities such as food and shelter. On the other hand, high income economies can afford cleanup technologies such as filters that trap airborne particles.


The following table shows how air pollution breaks down for select economies that are covered in the 2022 Sustainable Trade Index. Numbers indicate micrograms of PM2.5 particles per cubic meter, with higher numbers indicating more pollution.




India has the most polluted air of the economies in the Sustainable Trade Index. As a developing country with a large population, there are multiple contributing factors. For instance, agricultural burning, biomass combustion for cooking, and vehicle emissions all worsen the problem. The country is also the second-largest consumer of coal, and lacks tight emission standards on industries such as metal smelters and oil refineries.


The Philippines has low air pollution relative to its GDP per capita. This could be because 34% of its energy comes from renewable sources. Notably, the Philippines has the third-highest geothermal power capacity in the world. However, the country still faces considerable pollution issues, primarily due to vehicle emissions.


Want more insights into trade sustainability?


Sustainable Trade Index 2022 Report Cover


Download the 2022 Sustainable Trade Index for free.


New Zealand has the least polluted air of the economies in the index. Its good air quality is thanks in part to its low population density and island geography. The country is also impacted by large scale wind patterns which promote westerly winds and aid in pollutant dispersion. In order to further reduce pollutants, New Zealand is requiring vehicles to meet stricter emission standards.


Economic Activity and Air Pollution

Air pollution has severe consequences for the environment and human health. It is worsened by aggressive industrialization and some commercial activities. In fact, it’s estimated that industry accounts for 12% of PM2.5 particles globally. Industrial dust, energy production, and transportation are also significant contributors.


Of course, air pollution is just one variable that can help determine an economy’s trade sustainability. The Sustainable Trade Index uses a number of other metrics to measure economies’ ability to trade in a way that balances economic growth, societal development, and environmental protection. To learn more, visit the STI landing page where you can download the report for free.


The fifth piece in this series will introduce an upcoming report on the state of global carbon markets.



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