New Delhi, Jun 4 (PTI) The minimum temperature in Delhi on Saturday settled at 28.7 degrees Celsius, a notch above normal, the India Meteorological Department (IMD) said.
The maximum temperature is expected to touch 44 degrees Celsius, it said.
The IMD uses four colour codes for weather warnings -- green (no action needed), yellow (watch and stay updated), orange (be prepared) and red (take action).
The IMD has issued a yellow alert, warning of a heatwave at isolated places in the capital. The mercury may increase to 44 degrees Celsius at the Safdarjung observatory, it said.
A heatwave is declared when the maximum temperature is over 40 degrees Celsius and at least 4.5 notches above normal.
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The national capital is likely to witness clear skies during the day and heatwave conditions are expected at a few places, the weather office said.
The Safdarjung observatory, Delhi's base station, had recorded a maximum temperature of 42.9 degrees Celsius on Friday.
"Heatwave is back over parts of Rajasthan, Madhya Pradesh, south Uttar Pradesh and isolated pockets of Delhi-NCR," said Mahesh Palawat, vice president (climate change and meteorology), Skymet Weather.
