The city of Ludhiana, Punjab, on Saturday, woke up to the season’s first fog. The Indian Meteorological Department (IMD) had issued a yellow alert for dense fog for Saturday and Sunday.
Saturday saw the city's visibility plunge to 500 meters. The dense fog is expected to remain for the foreseeable future, according to the latest weather prediction.
“It has just begun. The coming days will be foggy, and the weather may clear after about a week,” said the director of the IMD Chandigarh Centre, Surennpal Paul.
Fog is classified by visibility levels: visibility ranging from 500 to 200 metres is termed moderate fog; between 50 and 200 metres is categorised as dense fog; and visibility below 50 metres is classified as very dense fog.