Karachi ranked as the world’s most polluted city - OyeYeah News
Karachi has been ranked as the world’s most polluted city on Air Quality Index.
Metropolis has been ranked first on the Air Quality Index with 351 particulate matter in the morning, closely followed by Indian capital Delhi and Kyrgyzstan capital city Bishkek.
Around 11:00 am on Tuesday morning, Karachi’s air was still harmful with its AQI at 231 and at third place after Bishkek with 347 AQI and Delhi 272.
While Lahore was also on the list ranked fourth on the index with 214 and Kabul was fifth with 203 particulate matter in the air.
The other five cities on the Air Quality Index were Kolkata 194, Dhaka 189, Mumbai 177, Kathmandu 158, and Wuhan 158.
The Air Quality Index is calculated based on five categories of pollution: ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide.
AQI as high as 151-200 is considered unhealthy, while an AQI between 201 to 300 is more harmful and an AQI over 300 is said to be extremely hazardous.
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