New Delhi, April 21 -- As Delhi on Sunday recorded its highest minimum temperature in April in three years with the mercury settling at 26 degrees Celsius, 4.4 degrees above the season's average, the Delhi government is likely to announce a heat wave action plan on Monday.

The last time the city saw such high minimum temperature was in 2022, when it touched 26.2 degrees Celsius. The maximum temperature on Sunday was at 39.8 degrees Celsius, three notches above normal. Humidity levels fluctuated between 63 per cent and 38 per cent.

The plan proposed that different departments should ensure availability of shade, drinking water, ORS packets etc., at bus and auto stands, proper shade for traffic police, using non-functional schools as shelte...