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US Air Quality Index
December 4 , 2020
1326 days
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- Lahore has once again topped the list of world’s most polluted cities in the world.
- It was followed by New Delhi and Kathmandu.
- The Air Quality Index is calculated based on five major air pollutants such as ground level Ozone, Sulphur Dioxide, carbon monoxide, Nitrogen dioxide and particulate matter.
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