Ranked: The Countries With the Most Air Pollution in 2023

In 2022, the Air Quality Life Index (AQLI) found that 97.3% of the world’s population is exposed to levels of PM2.5 that exceed the WHO guidelines. South Asia is a global hotspot with 37 of the 40 most polluted cities worldwide. Here, we map the world’s most polluted countries according to IQAir which captured our audience’s attention as the top piece this week.

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