Delhi Records Lowest September Average AQI in Five Years; Air Quality Improvement Trend Continues in 2026

According to the Ministry of Environment, Forest and Climate Change, Delhi recorded its lowest monthly average Air Quality Index (AQI) for September in 2026, registering 102 compared to previous years from 2022 onwards. The period from January to September 2026 also saw the highest number of days with daily average AQI under 200 ('Moderate' category) at 194 days, and the lowest number of 'Poor to Severe+' days at 79 days over the past five years. Furthermore, Delhi recorded a joint-lowest average PM2.5 concentration of 69 µg/m³ for January–September 2026. The Commission for Air Quality Management (CAQM) continues working with stakeholders to abate air pollution in Delhi-NCR.