Smog thins out but air pollution remains

By Ke Jiayun | January 4, 2015, Sunday |

Online Edition

THICK smog that covered much of Shanghai this noon is dissipating thanks to winds from the southeast. But it is too early to know if tomorrow will be a clear day as the temperature is rising, local forecasters said.

The city’s air quality deteriorated this weekend due to warmer temperatures and weak winds. The city was hazy with smog at noon when its air quality index peaked to 244, over the hazardous level.

The density of PM2.5 airborne pollutants also increased near noon to about 200 micrograms per cubic meter, eight times the safety level of 25 micrograms set by the World Health Organization.

But the condition began to improve after 2pm when half of the city’s air quality monitoring stations posted an AQI of 200 or less and changed the air quality status to “moderately polluted.” But the city's average AQI is still bordering the “heavily polluted” level.

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Smog thins out but air pollution remains

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