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September 24, 2012

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Nice weather continues but cooler Friday

THE city's weather is forecast to be good this week, mainly sunny with some clouds, with today's high to be 27 degrees Celsius and the low around 20 degrees, local meteorologists said.

Temperatures are to be stable through Wednesday with little chance of rain. Things will change later in the week as a cold front is expected on Friday.

Yesterday's air quality was labeled "good" by the Shanghai Environmental Monitoring Center, a change from two days "lightly polluted" air last Wednesday and Thursday. Today's air quality is also forecast to be good. Better readings are mainly because rainfall washed pollutants from the air last Saturday.

The city's readings of PM2.5 fine particulate matter also dropped sharply. As of 5pm yesterday, the average level of PM2.5 in the latest 24 hours was 41.7 micrograms per cubic meter, much improved from last Thursday, when the reading reached its highest at 197 micrograms per cubic meter since Shanghai began to issue PM2.5 readings.

The national PM2.5 standard is 75 micrograms per cubic meter. All the readings at the city's nine monitoring stations were below the standard at 5pm yesterday, with the only exception in Qingpu Dianshanhu area where the reading was 84.8 micrograms per cubic meter. That station is typically higher - it's often downwind of downtown.

Still, autumn has not arrived yet, forecasters say. Autumn officially starts when the daily average is below 22 degrees for five straight days after liqiu, the start of autumn in the Chinese lunar calendar, which fell on August 7.

In the Pacific, tropical storm Jelawat has strengthened into a typhoon at 8am yesterday. The China Meteorological Bureau said the center of Jelawat was in the northwestern Pacific, about 900 kilometers from Manila at 2pm yesterday.

It is moving at 5 kilometers per hour heading northwest, which could put it close to southeast Taiwan. The national weather bureau said Jelawat is strengthening but will not have much influence on China's coast in the next three days.


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