Kathmandu Valley’s Air Crisis: Why the AQI Is Dropping — and Why Winter Will Make It Worse
A Troubling Trend Air quality in the Kathmandu Valley has been declining for months. Many monitoring stations now report high concentrations of PM2.5 and PM10 almost daily. These readings often push the Kathmandu Valley Air Quality index (AQI) into the “unhealthy” or even “very unhealthy” range. Several locations have recorded PM2.5 levels above 100 µg/m³,…