The largest city in Pakistan, Karachi, has ranked as the second most polluted city in the world.
Per the Air Quality Index report, the AQI of Karachi was recorded at 172, falling behind India’s New Delhi, which topped the list with 253 AQI.
Following Delhi and Karachi, the other two metropolises of India and Pakistan, Mumbai and Lahore, ranked third and fourth on the list with 166 and 163 AQIs.
On the other end of the spectrum, Phnom Penh of Cambodia ranked as the least polluted city with 0 AQI.
Taipei, Salt Lake City, and Melbourne followed with 2, 5, and 6 AQIs, respectively.
