Alert remains as smog persists

China's top meteorological authority today continued to warn of smoggy weather that has battered parts of China for days.

The National Meteorological Center (NMC) issued a yellow alert for smog this morning, the fourth straight day such an alert has been announced.

Smog will persist in the day time in parts of Hebei, Tianjin, Shandong, Henan, Jiangsu, Anhui, Shanghai, Zhejiang, Hubei and Hunan, the NMC said.

The NMC advised people in the affected regions to wear masks. It forecast that smog will ease tomorrow thanks to a moderately strong north wind, which will lead to a drop in temperature.

China's meteorological disaster alerts are categorized as blue, yellow, orange and red as the severity of disasters ascends.