Summary:
The air quality in the Delhi and its adjoining areas reached the middle of the 'very poor' category on Monday with the AQI docking at 340, according to government-run System of Air Quality and Weather Forecasting And Research (SAFAR). "A marginal deterioration in air quality is forecasted towards the middle-end of very poor category for 13th January. The trains, which are badly affected due to inclement weather, include Hyderabad-New Delhi Telangana Express (12723), Rewa-Anand Vihar Rewa Express (12427), Chennai-New Delhi Tamil Nadu Express (12621), Howrah-New Delhi Poorva Express (12381) and Dibrugarh Delhi Jn Brahmputra Mail (15955), according to CPRO, Northern Railway. An AQI between 0-50 is considered 'good', 51-100 'satisfactory', 101-200 'moderate', 201-300 'poor', 301-400 'very poor' and 401-500 is marked as 'severe'. An AQI above 500 falls in the 'severe plus' category..