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Kathmandu, the capital of the country, has risen to the first place of the most polluted city in the world. The Air Quality Index (AQI) of Kathmandu, which was measured at 7 pm on Tuesday, reached 204.
According to Air Quality Air, the world's air quality measuring site, Bangladesh's capital Dhaka is second and Vietnam's capital Hanoi is third. Dhaka and Hanoi have AQI of 151 .
Since the last few days, Kathmandu's atmosphere has deteriorated and the air has become polluted. Similarly, on Monday, Kathmandu came to the first number of the world's most polluted city.
In the absence of sufficient rain, the sky of Kathmandu Valley becomes polluted in winter. An AQI of 50 is considered satisfactory and 150 to 200 is considered unhealthy.
For a healthy environment, the amount of particles smaller than 2.5 microns in diameter (PM 2.5) in the air should be 5 micrograms per cubic meter or less. However, it is found that its maximum amount is 120.57 in Kathmandu. These particles contain nitrates, sulphates, black carbon, ammonium and dust particles which are considered very harmful to health.
Photo: Angad Dhakal/Kantipur
