Delhi chokes on ‘severe plus’ AQI: Smog engulfs city, low visibility; key points

Delhi-NCR choked under severe toxic smog, with air quality hitting 491, the worst this year. Authorities invoked Stage IV GRAP, banning construction and restricting diesel trucks. Schools and offices adopted hybrid models. Experts cite emissions and weather for the crisis, urging emission cuts. Residents advised to stay indoors.