Sunday, Monday Shanghai Air Pollution Worst On Record; AQI 329, pm 2.5 @ 280 [View all]

[hatrack]

Shanghai endured another choking day yesterday with the air quality index surging past 300 into the highest range of severe pollution in a six-level system for the first time since official AQI records began a year ago. Heavy pollution is forecast to continue this morning but alleviate later in the day.

By 5pm yesterday, the city’s air had been in the severely polluted zone for 10 hours, making it the worst day for air pollution since the index was launched last December.

The average AQI peaked at 317 at noon, with the highest recording of 329 in Yangpu District.

PM2.5 density stayed above 280 micrograms per cubic meter overnight until 9am, more than 3.7 times the nation’s limit of 75, which made the tiny particles that are hazardous to health the main pollutant. The density of the larger PM10 particles peaked at 360 micrograms per cubic meter from 8am to 9am, 2.4 times the nation’s limit of 150 micrograms.

EDIT

http://english.eastday.com/e/131203/u1a7809364.html