The movement of several trains is affected as dense fog has engulfed the Delhi-NCR region, causing low visibility. According to Indian Railways, as many as 25 Delhi-bound trains have been delayed by up to five to six hours. These include the Poorva Express, Farakka Express, Lucknow Mail, Kashi Vishwanath Express, Padmavat Express, Mewar Express, Sirsa Express, Patalkot Express, UP Sampark Kranti, and Ayodhya Express. Passengers are advised to check the latest status of the trains before arriving at the station to board them.