Nepal, April 17 -- Air pollution levels in the Kathmandu Valley have once again risen to a high level. According to the latest records, Kathmandu currently ranks as the second most polluted city in the world.

As per data from the international air quality monitoring organization IQAir, the Air Quality Index (AQI) of Kathmandu was 161 as of 11:25 am, indicating an unhealthy level of air pollution.

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Dhaka, the capital of Bangladesh, currently ranks as the most polluted city in the world with an AQI of 169, a level considered unhealthy for human health.

Kathmandu follows closely behind in second place, with an AQI of 161. According to the air quality classifi...