The national observatory forecast on Sunday that light to medium smog will continue to shroud northern China over the next two days.
Parts of northern China and provinces along the Yangtze, Yellow and Huaihe rivers will experience light to medium smog from Sunday through Monday, according to a statement on the National Meteorological Center (NMC) website.
The NMC suggested people avoid outdoor activities and take precautions during the period.
Starting Tuesday, rain and a cold front will disperse the smog, said the NMC.
According to the Beijing Environmental Protection Monitoring Center, Beijing experienced serious smog on Saturday despite showers over the past two nights.
The Air Quality Index (AQI) reading was 229 at 6 p.m. Saturday, indicating serious pollution, with the major pollutant being PM2.5, or particulate matter measuring less than 2.5 microns in diameter, according to the center.