The latest 2020 World Air Quality Report shows the changing levels of PM2.5 around the world during the year. Let's take a look at the part about Asia.
Key findings：
※As COVID—19 reduced travel and producing around the world, the air quality improved in 84% of the countries.
※Chinese cities made a 11% drop in PM2.5 levels in 2020, after a 9% drop in 2019. Most parts of Asia remain the same. South Korea was the most polluted country for PM2.5 among developed countries during 2020. Twenty—two of the top 30 most polluted cities are in India.
※Open burning had a lot to do with the air quality of cities and countries around Asia, such as Singapore, Indonesia, Kuala Lumpur, Bangkok and Chiang Mai. Sandstorms played a big role in poor air quality in the Middle East and Northwest China.
