The national capital on Saturday recorded a minimum temperature of 32.4 degree Celsius, four notches above the season's average, according to the India Meteorological Department.
The weather department has predicted mainly clear sky and heat wave conditions with strong surface winds during the day.
The humidity was 38 per cent at 8.30 am. The maximum temperature is likely to settle around 44 degrees Celsius, it stated.
The Air Quality Index (AQI) of the national capital was recorded in the "moderate" category with a reading of 185 at 9 am, according to the Central Pollution Control Board.
An AQI between zero and 50 is considered "good", 51 and 100 "satisfactory", 101 and 200 "moderate", 201 and 300 "poor", 301 and 400 "very poor", and 401 and 500 "severe".