Grey skies prompt 2nd yellow warning

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January 15, 2016

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Grey skies prompt 2nd yellow warning

By Ma Yue and Ke Jiayun | January 15, 2016, Friday |

Print Edition

THE Shanghai Environmental Protection Bureau issued a yellow smog warning yesterday as the air quality index rose to 225 points.

The lowest in the city’s four-tier system, yellow alerts come when the AQI is forecast to be between 201 and 225 for the next 24 hours.

Yesterday’s warning was issued at 11am and was the second since the turn of the year just two weeks ago.

PM2.5 particles were again the major pollutant, with their density in some parts of the city surpassing 160 micrograms per cubic meter, or six times the World Health Organization’s safe level.

The alert meant that activity was suspended at selected building sites and heavy polluting factories, while vehicles carrying construction materials were ordered off the roads.

The Shanghai Environmental Monitoring Center blamed the poor air quality on pollutants blown into the city from northern and western regions, as well as a lack of wind to disperse them.

Today’s AQI is expected to be between 205 and 225 in the morning, before falling to between 185 and 205 in the afternoon.

Despite the gloomy outlook, today and tomorrow should be slightly warmer, with the high set to reach 10 or 11 degrees Celsius. Sunday will be wet and cooler, with a maximum temperature of 8 degrees, forecasters said.

The mercury managed only a fraction above freezing in the downtown Xujiahui area yesterday, while in some suburban areas, it fell to as low as minus 4 degrees.

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Grey skies prompt 2nd yellow warning

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