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Shanghai issues blue alert for poor air quality
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Shanghai’s air quality worsened today as the city issued a blue alert for air pollution at 3pm, the first alarm since emergency measures have been rolled out on January 15.
The alert, the lowest level after red, orange and yellow in the four-tier alarm system, will be issued when the Air Quality Index is predicted to be between 201 and 300 in the next 24 hours.
The level of tiny PM2.5 particles that are particularly hazardous to health rose to 175.8 micrograms per cubic meter at 5pm—double the national limit of 75, according to the local environment monitor.
The city’s air has been in the severely polluted zone as the air quality index climbed to 210 by 5pm.
Children, the elderly and those suffering heart problems or respiratory illnesses are advised to stay indoors while others were advised to cut down on outdoor activities.
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