Dense fog enveloped Aligarh city of Uttar Pradesh on January 18. It led to low visibility at various locations. Similar situation of fog was observed in Bihar’s Muzaffarpur today. A thick blanket of dense fog also engulfed Punjab’s Ludhiana. Locals were seen keeping themselves warm near the bonfire amid chilly winter season. The city recorded a minimum temperature of 8 degrees celsius, as per India Meteorological Department (IMD)