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April 18, 2013

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Cool down today to bring smog in morning

THE city is expected to cool off during the rest of the week, with temperatures edging down starting today.

Under the influence of a cold front, the city's high today should drop to 22 degrees Celsius, 4 degrees lower than yesterday, with the low around 13 degrees, said the Shanghai Meteorological Bureau. It is expected to be overcast to cloudy.

Temperatures should keep dropping tomorrow, with a high of 16 degrees Celsius and a low of 11, the bureau said. It should be cloudy to overcast with a chance of rain.

On Saturday, the high should drop to 14 degrees Celsius and, on Sunday morning, the low should drop below 10 degrees.

"The city should feel shady and chilly," said Zhang Ruiyi, a chief service officer of the bureau.

The cold front also has meant a worsening of the city's air quality.

Smog is expected again this morning in some areas, as it did yesterday morning, the bureau said. The haze is caused by the "accumulation of airborne particulates and weak winds," Zhang said.

The air yesterday was lightly polluted with PM2.5 particles, the major pollutant, higher than 80 micrograms per cubic meter all the day.

The readings reached a peak of about 140 micrograms per cubic meter at noon and dropped to 81.9 at 6pm.

The nation's limit on PM2.5 in the most recent 24 hours is 75 micrograms per cubic meter.


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