Heavy snowfall recorded at Lahual-Spiti district.
Intense cold wave conditions on Saturday gripped north India, including Kashmir where snowfall in the upper reaches of the valley marked the beginning of ''Chillai-Kalan'' -- the 40-day period of harshest winter.
In the national capital, foggy conditions and a cloud cover prevented the sunlight from heating the ground. The cold air trapped pollutants, officials said. At 4 pm, the overall air quality index of the city stood at 418, which falls in the severe category.
The city recorded a low of 9.5 degrees Celsius and a high of 18 degrees Celsius, which was three notches below the normal.
Several trains were reported running late due to fog.
The snowfall in Kashmir began early on Friday and continued through the night. Chillai-Kalan, which began on Saturday, is the period when the chances of snowfall in Kashmir are the highest and the maximum temperature drops considerably.
The ski resort of Gulmarg in north Kashmir received 5 cm of snowfall and the mercury settled at a low of minus 9.6 degrees Celsius on Friday night.
Pahalgam, which serves as one of the base camps for the annual Amarnath Yatra in south Kashmir, received 21 cm of snowfall and recorded a minimum temperature of minus 3 degrees Celsius.
Qazigund in south Kashmir received 38.5 cm of snowfall and the mercury settled at a low of minus zero degrees Celsius.
There were reports of other areas in the upper reaches of the valley receiving snowfall, the MeT department said.
The weather in most plains, including Srinagar, remained largely dry during the night after fresh snowfall earlier in the day on Friday.
Srinagar recorded a low of minus 0.4 degree Celsius on Friday night.
Leh district of Ladakh recorded a low of minus 9.5 degrees Celsius, while Drass registered a low of minus 6 degrees Celsius, the officials said.
The early morning sun appeared in Jammu and other parts of the region after clouds shrouded it out for the past five days, providing much needed relief to the people from the bone-chilling cold.
The highway town of Banihal, which received 1.5 cm of fresh snow, was the coldest place in Jammu region with a low of minus 0.5 degrees Celsius.
He said Jammu city recorded a minimum of 6.8 degrees Celsius - a dip of 1.4 degrees below the previous day.
Biting cold persisted in most parts of Punjab and Haryana with Bathinda being the coldest at 5.6 degrees Celsius.
A thick blanket of fog enveloped several parts of both the states, including Amritsar, Ludhiana, Patiala, Bathinda, Hisar, Karnal and Sirsa.
The minimum temperature in Amritsar, Ludhiana and Patiala was recorded at 6.6, 7 and 8.6 degrees Celsius, up to three notches above normal, respectively.
In Haryana, Ambala, Hisar and Karnal braved cold wave conditions at 8.3, 8 and 9.6 degrees Celsius. The minimum temperature in Narnaul, Rohtak and Sirsa settled at 7.8, 9.2 and 6.9 degrees Celsius.
Chandigarh recorded a low of 8.6 degree Celsius, up by two degrees above the season's average.
Parts of the desert state of Rajasthan witnessed a marginal increase in the minimum temperature. Ganganagar was the coldest place in the state recording a low of 6.1 degrees Celsius, it said.
The minimum temperature in Alwar, Vanasthali (Tonk), Pilani, Sikar and Jaipur was 8.2, 8.6, 9.4, 10 and 10.1 degrees Celsius respectively.
Ajmer recorded a low of 11.3 degrees Celsius, while the minimum temperature recorded in Jaisalmer, Jodhpur and Barmer was 12.4, 12.8 and 13.8 degrees Celsius respectively.
Some higher reaches of Himachal Pradesh received fresh snowfall whereas rain occurred at some places in the state, where Keylong was the coldest place at minus 6.4 degrees Celsius.
The minimum temperature in the hill state decreased by one to two notches during the last 24 hours, Shimla Meteorological Centre Director Manmohan Singh said.
Gandhola experienced 5 cm snowfall followed by Keylong (2 cm) and Kothi (1 cm).
Manali and Chamba received 9 mm rainfall each, followed by Dalhousie (8 mm), Banjar and Rampur (3 mm each), Chhatarari (2 mm), Bhuntar, Gaggal, Palampur and Seobagh (1 mm each).
Tourist destinations Manali, Kufri and Dalhousie shivered at 0 degree Celsius.
The minimum temperature in state capital Shimla was 3.4 degrees Celsius.
The highest temperature in the state was recorded in Bilaspur at 21 degrees Celsius.