"Train number 02391--Shramjeevi Express (Rajgir to New Delhi), train no 02303-- Howrah Jn Railway Station to New Delhi railway station special, Train no 02225-- Azamgarh to Delhi Kaifiyaat COVID 19 Special and Train number 02393-- Patna to Delhi Sampoorna Kranti COVID 19 SF Special were also delayed for over three hours," a Railway official said.
Earlier on Sunday, India Meteorological Department (IMD) in a tweet said, "Dense to very dense fog was observed over Punjab, West Uttar Pradesh and moderate to dense fog was observed over Haryana, Chandigarh, Delhi, East Uttar Pradesh, Bihar and Assam and Meghalaya at 5.30 am on January 17."
The air quality in Delhi reached 'severe' category with the AQI touching 492, according to the latest estimates updated by System of Air Quality and Weather Forecasting and Research (SAFAR). The slow winds and ventilation conditions are extremely unfavourable for the dispersion of pollutants which lead to deterioration in air quality. The air quality in the national capital continued to deteriorate with the System of Air Quality and Weather Forecasting and Research (SAFAR) recording the Air Quality Index (AQI) at an alarming 492 (severe), nearly maxing out the scale which goes up till 500. Pockets across Delhi too reported severe AQI levels.
Dense to very dense fog extends from Punjab to Delhi and with a slight break at West UP, again starts from East UP and goes up to Sub Himalayan West Bengal," the IMD reported, adding that conditions were likely to continue till the following morning.
The IMD also reported that the minimum temperature was likely to rise by January 18 over the plains of North India.