Shanghai weather emergency plan

Special Emergency Plan for Heavy Air Pollution in Shanghai

(1) blue warning: according to the monitoring forecast, the ambient air quality index (AQI) in the next day will be between 20 1~300;

(2) Yellow warning: According to the monitoring and prediction, the ambient air quality index (AQI) will be between 20 1~300 in the next two days;

(3) orange warning: according to the monitoring and prediction, the ambient air quality index (AQI) in the next day will be between 30 1~450;

(4) Red Warning: According to the monitoring forecast, the ambient air quality index (AQI) will be greater than 450 in the coming day.