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 12 Delhi-bound trains have been delayed by up to two hours. These include the Poorva Express, Shramjeevi Express, Purushottam Express, Gondwana Express, and Kaifiyat Express. Passengers are advised to check the latest status of the trains before arriving at the station to board them.