Delhi experienced a colder night than hill stations Shimla and Nainital last night. While Delhi shivered at 4 degree Celsius, the lowest so far in the city, the temperature in Shimla and Nainital was around 6 degree Celsius.
Shimla received snowfall last week, but its minimum temperature was degrees above normal. Weather experts say that since Delhi has clear skies and the cold breeze is coming directly to the plains and adding to the cold.
In the next two days, the temperature in Delhi is likely to drop to four degree Celsius, according to India Meteorological Department forecast.
"The minimum temperature was recorded at 4 degrees Celsius, four notches below the season's average. It is the lowest temperature recorded so far in this month," the official of the department said
While the mornings bring the chill and fog, the days are expected to be warmer with the maximum temperature likely to hover around 22 degree Celsius.
"The skies will remain clear and the maximum temperature is expected to hover around 22 degrees Celsius," the weatherman said.
The humidity level recorded at 8.30 am was 94 per cent, he said.
On Wednesday, the minimum temperature settled at 5.2 degrees Celsius, while the maximum temperature was recorded at 22.3 degrees Celsius.
According to the government-run System of Air Quality and Weather Forecasting And Research (SAFAR), the overall air quality index of Delhi continues to be "very poor" at 319.
If the air quality index is in the range of 51 to 100, it is considered satisfactory; 101-200 is moderate and 201-300 falls under the category of poor. 300-400 is considered 'very poor' and 401-500 falls under the category 'hazardous'.
With the minimum temperature falling, there will be additional moisture in Delhi's air, mainly because of a cold wave and ground frost conditions over some parts of northwest India.
"Winds are again becoming partially favourabe for the dispersion. Moist air from IGP-region is continuously passing over Delhi's cool surface by advection and will lead to moderate advection fog," says SAFAR.
Delhi must avoid prolonged or heavy exertion, says the research body in an advisory.
"Go for a short walk instead of a jog and take more breaks. Stop any activity level if you experience any unusual coughing, chest discomfort, wheezing, breathing difficulty, or fatigue. If the room has windows, close them," the advisory reads.
It also advises people to avoid burning wood, candles or incense. "If the air conditioner provides fresh air intake option, keep that closed. Keep the room clean - don't vacuum. Do wet mopping to reduce dust," says the advisory.
(With Inputs From PTI)
Help. Save a life, donate a blanket for the homeless. Here's how
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.