Mercury falls to 7.5AdegC in city.

KARACHI -- The cold wave continued to grip Karachi and other parts of the province on Wednesday as temperature in some city areas dropped to 7.5 degrees centigrade.

Despite the fact that some parts of the city witnessed temperatures below 6AdegC, the city's minimum representative temperature remained 7.5AdegC, as it was recorded in the department's oldest standardised observatory, which is located in the old airport area.

The Met office said that it's not possible to measure the city's average temperature because there are only five fully fledged observatories in Karachi, which record round-the-clock temperature. Two of which are run by the Pakistan Air Force where the...