With an AQI value of 54, Darjeeling falls in the Moderate range. The air quality is moderate, with PM2.5 at 31 µg/m³ and PM10 at 38 µg/m³ . Ozone levels are measured at 32 ppb , and CO is at 40 ppb . While most people will not be affected, sensitive groups like children and the elderly may experience mild discomfort. Limit outdoor activities if you are prone to respiratory issues.