Heavy haze has continued to engulf north and east China, affecting highways, flights and authorities have upgraded the warning level for thick for to the highest red in Hebei province.
The smoggy weather has affected China's land from north to south, including Beijing, Hebei, Shandong, Jiangsu, Shanghai, Zhejiang, Hunan, Guangxi and Guangdong, with visibility less than 50 meters in some regions.
The smog has created problems for a number of people forcing them to seek treatment for respiratory problems.
According to China Daily, meteorological authorities upgraded the warning level as visibility was further reduced due to the polluting weather hitting several major cities like Shijiazhuang, the provincial capital, and Baoding.
On Saturday evening, the National Meteorological Center (NMC) continued to issue an orange alert for haze, forecasting the polluting weather will linger in Jiangsu, Zhejiang, Shandong, Henan, Beijing and Tianjin by weekend.
The Ministry of Environmental Protection said that with a strong cold front, the air quality in north China and east China's Yangtze Delta area will significantly improve between Sunday and Wednesday next week, the report added.