The day temperature at Safdarjung observatory, considered to be the official figure for the city, was 40 degrees Celsius, two notches above normal, the Met department said.
The minimum settled at 30.6 deg C, three notches above normal, it added.
Yesterday, the maximum was recorded at 41.7 degrees Celsius, four notches above normal, and the minimum was five points above normal at 32.7 degrees.
The maximum at Palam observatory was at 41.8 deg C while at Ayanagar and Ridge area, it was recorded at 41.0 deg C.
The MeT department predicted possibility of very light to light rain and thunderstorm in some areas of the city.
"Very light rain and thunderstorms may occur in some areas of the national capital. The maximum and minimum may settle at 39 and 28 degrees, respectively," said a MeT official.