Dense to very dense fog to persist in some northern states till Sat - IMD
This story was originally published at 14:27 IST on 5 January 2026
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MUMBAI – Dense to very dense fog conditions are very likely to continue during the morning and late night hours in parts of Punjab, Haryana, and Chandigarh till Saturday, and over east Uttar Pradesh and Madhya Pradesh till Thursday, the India Meteorological Department said. Dense fog conditions are also likely in most parts of northwest, northeast, and some parts of east and central India till Monday, the weather department said.
Visibility drops to 0–50 metres in "very dense fog" conditions, and between 51 and 200 metres in "dense fog" conditions.
The weather department has warned of cold day conditions in parts of east Rajasthan on Tuesday and Wednesday, in west Rajasthan and sub-Himalayan West Bengal till Wednesday, and in Madhya Pradesh, Bihar, and Gangetic West Bengal till Tuesday. Cold wave conditions are expected in parts of Punjab, Haryana, and Chandigarh from Tuesday to Friday, in west Rajasthan from Thursday to Saturday, in east Rajasthan from Tuesday to Saturday, in Chhattisgarh from Tuesday to Thursday, and in Jharkhand on Tuesday and Wednesday.
A cold wave condition is when the minimum temperature drops to 10 degrees Celsius or less for plains and 0 degree Celsius or lower for hilly regions, according to the weather bureau. Cold day conditions are associated with a fall in maximum temperatures, typically occurring due to persistent low clouding. A cold day occurs when the maximum temperature during the day is at least 4.5 degrees Celsius below normal.
Currently, a western disturbance observed as a cyclonic circulation lies over northwest Uttar Pradesh, and another western disturbance over north Pakistan. Both systems are expected to lead to light to moderate rainfall or snowfall over Jammu & Kashmir, Ladakh, Gilgit-Baltistan, and Muzaffarabad till Tuesday, and over Himachal Pradesh and Uttarakhand on Tuesday.
An upper air cyclonic circulation lies over the equatorial Indian Ocean and the adjoining central parts of south Bay of Bengal, while a trough lies over the Maldives and the adjoining Lakshwadeep area. These weather systems are likely to cause heavy rainfall over parts of Tamil Nadu and Kerala on Friday and Saturday, the weather bureau said.
It has warned of ground frost in parts of Uttarakhand till Tuesday. Ground frost is a covering of ice, in one of its many forms, produced by the sublimation of water vapour on objects colder than 0 degree Celsius.
Minimum temperatures in northwest India are likely to fall gradually by 2–3 degrees Celsius in the next four days, the weather bureau said. In east and central India, minimum temperatures are expected to slowly decline in the same range in the next two days, the bureau said, adding that no significant change in minimum temperatures is likely over the rest of the country. End
Reported by Shreya Shetty
Edited by Avishek Dutta
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