At 6.9 degrees, Delhi records coldest November morning in 17 years2 min read . Updated: 22 Nov 2020, 01:38 PM IST
- The national capital had recorded a minimum of 7.5 degrees Celsius on Friday, the lowest in the month in 14 years, according to the India Meteorological Department
The minimum temperature in the national capital dropped to 6.9 degrees Celsius on Sunday, the lowest in the month of November since 2003, as a cold wave swept parts of Delhi.
The national capital had recorded a minimum of 7.5 degrees Celsius on Friday, the lowest in the month in 14 years, according to the India Meteorological Department.
As per the IMD forecast dated November 21, the maximum and minimum temperatures would be around 24 and 7 degree Celsius respectively today.
"The Safdarjung Observatory which provides representative data for the city, recorded a minimum of 6.9 degrees Celsius. It is Delhi's lowest minimum temperature in the month since November 2003, when the city recorded a minimum of 6.1 degrees Celsius," said Kuldeep Srivastava, the head of the IMD's regional forecasting centre.
The mercury dropped to 6.1 degrees Celsius at the Palam weather station, he said.
For the plains, the IMD declares a cold wave when the minimum temperature is 10 degrees Celsius or below and is 4.5 notches less than normal for two consecutive days.
“However, for small areas such as Delhi, a cold wave can be declared if the criteria is fulfilled even for a day," Srivastava said.
Delhi had recorded the lowest minimum temperature of 11.5 degrees Celsius last year, 10.5 degrees Celsius in 2018 and 7.6 degrees Celsius in 2017 in the month of November.
The all-time record for the lowest minimum temperature in November is 3.9 degrees Celsius recorded on November 28, 1938.
Srivastava said icy cold winds blowing from snow-laden western Himalayas have led to a dip in the mercury.
However, the minimum temperature will rise by two to three degrees Celsius in the next four to five days under the influence of a fresh Western Disturbance.
The minimum temperature this month, barring on November 16, has remained 2-3 degree Celsius below normal in the absence of a cloud cover, according to IMD officials.
Clouds trap some of the outgoing infrared radiation and radiate it back downward, warming the ground.
The month of October was the coldest in 58 years in the national capital.
The mean minimum temperature in October this year was 17.2 degrees Celsius, the lowest since 1962, when it was 16.9 degrees Celsius.
Meanwhile, the air quality continues to remain in the 'poor' category today with the air quality index (AQI) of Delhi was at 259. An AQI between 0-50 is marked good, 51-100 is satisfactory, 101- 200 is moderate, 201- 300 is poor, 301-400 is very poor and 401-500 is considered severe.
With agency inputs