The sun virtually disappeared for days, particularly between January 16 and January 23, following two consecutive spells of dense fog and low clouds. Hide and seek continued, with city getting good amount of rain on January 18, January 21 and 22, Jenamani said.
January has been consistently getting colder since late 1990s due to prolonged dense-fog hours, smog or low-cloud cover during the day blocking out the sun. “Increased pollution and many other meteorological reasons are responsible for this. The trends have been emerging from 1990s and require further studies,” he said.
The average maximum temperature for the month has been 18.8°Celsius — so far the third coldest average day temperature since 1947. The coldest January got was in 2003, with an average temperature of 17.9°C, followed by 18.5°C in 1999, Jenamani said.
The worst, however, may be over. “Though fog is set to return, days will no longer be as cold as they were in the last few weeks,” he said.