A layer of polluted haze shrouds the atmosphere of Kathmandu Valley as the Air Quality Index (AQI) dips in Kathmandu, Nepal, on November 2, 2024. According to readings from the Air Pollution station of the US Embassy in Kathmandu, the AQI of Kathmandu stands at 165 on November 2 at noon, making the air of the national capital unhealthy to breathe. The PM 2.5 of Kathmandu stands at 69.8 ug/m3, while the PM 10 measures at 99.5 ug/m3. (Photo by Subaas Shrestha/NurPhoto)

polluted haze atmosphere Kathmandu Valley Air Quality Index AQI air pollution US Embassy Kathmandu unhealthy air national capital PM 2.5 PM 10 µg/m³ air quality pollution levels 2nd November 2024 air monitoring air pollution station Subaas Shrestha NurPhoto particulate matter health impact environmental concern air measurement air safety air standards pollution data public health air contamination atmospheric conditions pollution sources air quality monitoring.