Temperature dips, winter is knocking on Delhi’s door

The winds are coming from Jammu and Kashmir and Himachal Pradesh which have already received snowfall over the past few days.

delhi Updated: Nov 23, 2017 11:25 IST
HT Correspondent
HT Correspondent
Hindustan Times
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The winds are coming from Jammu and Kashmir and Himachal Pradesh which have already received snowfall over the past few days.(Sushil Kumar /HT PHOTO)

Winter is at Delhi’s doorstep. The mercury has dipped by around four degrees over the past one week.

On Thursday mercury recorded the minimum temperature as 9.4 degrees, a marginal dip from the 9.6 degree Celsius recorded a day earlier. While this was the reading at the Safdarjung observatory, which is taken as the base for Delhi’s weather, the temperature declined sharply at Lodhi Road where it touched, 8 degrees Celsius compared to Wednesday’s reading of 8.4 degree Celsius.

Met experts of the Regional Weather Forecasting Centre said that a clear sky and strong north-westerly winds blowing over Delhi has caused the mercury to fall and have also helped to keep the pollution levels low. The Air Quality Index (AQI) on Wednesday was 320, four notches below Tuesday’s level of 324. An AQI value between 301 and 400 is considered ‘very poor’.

“While the dry cold winds from north and north-western parts of India are bringing in the chill, the clear sky has helped the mercury to drop further. Even though the temperature is building up during the day, the land is able to radiate the heat at night allowing the minimum temperature to plummet,” said Kuldeep Srivastava a senior scientist of the Regional Weather Forecasting Centre.

The winds are coming from Jammu and Kashmir and Himachal Pradesh which have already received snowfall over the past few days.

Meanwhile the minimum temperature at Palam was 9.3, recording a difference of over one degree Celsius compared to Wednesday’s 10.5, a weather official said. However, there are predictions that the temperature could rise slightly in the next couple of days.

Experts had earlier told HT that while the dry cold winds from north and north-western parts of India are bringing in the chill, the clear sky has helped the mercury to drop further.

There was no respite for Delhiites on the pollution front as city’s air continued to be in the very poor category. The Air Quality Index around 9am was 316. For the past four days it has been in the very poor category which is normal this times of the year.

The Air Quality Index (AQI) on Wednesday was 320, four notches below Tuesday’s level of 324. An AQI value between 301 and 400 is considered ‘very poor’.

On Tuesday, the night temperature dropped to 8.2 degrees in the Ridge area. On Monday, the mercury had dropped to around 9.4 degrees in Safdarjung.

This month, however, has still not witnessed the lowest temperature in the recent years. In November 2009, the lowest temperature was recorded at 7.9 degree Celsius. The lowest temperature that Delhi has ever recorded in November was in the year 1938 — at 3.9 degree Celsius.

According to the Met department, there could be a marginal rise in temperature over the next few days as clouds could cover the sky. “There are, however, chances that the mercury could spike marginally as a western disturbance could hit north India. The sky could become partially cloudy even though chances of a drizzle are remote,” said Srivastava.

First Published: Nov 22, 2017 22:56 IST