According to Shanghai Municipal Bureau of Ecology and Environment, due to the significant reduction in the impact of precipitation in the city from yesterday night to today, and the remaining sand and dust air masses on the surface of the Northeast sea, it is expected that the city will be affected by the transportation of sand and dust on the sea and PM10 pollution will occur from this morning (30th). The process can reach serious pollution in a short time.
It is estimated that ：
This morning, the pollution index was 490-510, severe pollution, and the primary pollutant PM10
In the afternoon
390-410, severe pollution
At night
185-205, moderate to severe pollution
On the 31st
95-115, mild pollution
On April 1st
40-60, excellent to good
