Delhi's air quality hits hazardous levels even as govt bans BS-III, BS-IV vehicles under GRAP III

Delhi experienced severe air pollution for the fourth day. Smog engulfed the city, reducing visibility and causing health concerns. The Air Quality Index (AQI) reached hazardous levels in multiple areas. Authorities implemented the Graded Response Action Plan (GRAP-III) to combat the pollution. This includes restrictions on vehicle use and construction activities.