Nepal, March 11 -- Kathmandu's air quality has deteriorated, making it the fifth most polluted city in the world with an AQI of 180, according to the Air Quality Index.

Beijing, Kampala, Delhi, and Kuwait occupy the top four spots, with AQI levels ranging from 184 to 240. The poor air quality in Kathmandu is attributed to local wind patterns and the western low-pressure system, which has prevented rainfall.

The sky over the valley is cloudy. Due to the influence of local winds and the influence of the western low pressure system, there has been no rainfall. Due to this, the air quality has become unhealthy.

From a health perspective, an air quality index of 0-50 AQI is considered good, 51-100 AQI is moderate, and 101-150 AQI unhealthy ...