Several prominent cities in the world are grappling with alarming levels of pollution, posing a serious threat to public health. Let's take a look at some of the most polluted cities in the world.

Most polluted cities in world

1. Delhi: One of the top three most polluted cities in India and in the world, Delhi's air quality continues to turn unhealthy to very unhealthy. Especially, with Diwali and stubble burning during the month of October-November, the AQI deteriorates every year, posing serious challenges to the residents. Despite the Graded Response Action Plan (GRAP), residents continue to suffer from respiratory issues.

2. Beijing: Beijing ranks second in the IQAir list with an average Air Quality Index (AQI) of 180, indicating "unhealthy" air. The primary reasons are the vehic

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