Delhi witnessed its first wintry spell on December 11 that set the pace for the winter chill. The single-day spell amounting to 7.8 mm as recorded by Safdarjung Observatory and 6.8 mm by Palam Observatory on December 11 helped in plummeting the temperatures.
The maximums that settled at 25°C on December 11 tumbled by a good 6 degrees and settled at 19.8°C. Though a slight increase in the minimums was observed and from 9.8°C on Monday, the temperatures rose to settle at 12°C yesterday.
These rains further helped in washing off the pollution to some extent which was prevalent in the region for a long time thus, giving some cleaner air to the Delhiites. Moreover, these rains were the first December rains since 2014 as the national capital failed to observe any rains in the month of December in the year 2015 and 2016.
Shallow to moderate fog was also witnessed in a few pockets. However, dense fog has remained far from occurring over the region as of now which is more common during the second half of the month in association with rains or the passage of Western Disturbance.