India, Jan. 5 -- Delhi residents woke up to gloomy skies on Sunday as clouds hung over the capital, obscuring the sun and bringing down the day temperatures.

A cold wave is expected to affect isolated places in the city till January 6, the IMD forecast. A cold wave is declared when the minimum temperature drops by 4.5 - 6.5 degrees Celsius below the normal.

According to the India Meteorological Department (IMD), the maximum temperatures remained appreciably below normal (3.1 to 5.0 degrees Celsius) at isolated places and below normal (1.6 to 3.0 degrees Celsius) in most parts of Delhi.

The national Capital on Sunday logged a maximum temperature of 17.3 degrees Celsius, two degrees below the seasonal average, the IMD said. The minimum t...