A cold front from the north will bring Shanghai's heat wave to an end today, forecasters said, with the high dropping to around 30 degrees Celsius and the low to 25 degrees. Occasional showers and good air quality are expected over the weekend.

Tropical Storm Lionrock is expected to hit Japan and northeastern China today, but Shanghai will not be directly affected.

Yesterday marked the end of the 40-day sanfu period — the hottest days of summer in the Chinese lunar calendar.