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August 11, 2012

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Home » Metro » Environment

City logs its longest stretch of cleanest air

SHANGHAI'S air quality had been on the best level for 21 consecutive days as of yesterday, the longest period since records have been kept, said the city's environmental authority.

Although the typhoons in the past two weeks brought showers and gales to Shanghai, they also helped clean the city's air.

The average PM2.5 index of the city was 31.8 micrograms per cubic meter by 5pm yesterday, indicating the air quality to be at the green level, the best of the six-color system, according to the Shanghai Environmental Monitoring Center.

The cleanest air yesterday was detected in Chuansha area of the Pudong New Area, where the PM2.5 was only around 25 micrograms per cubic meter, the center said.

"Shanghai had some fine days and then several typhoons, which was good to keep the air quality on a high level," an official said.

However, the excellent air quality is likely to decrease to "good" in the new few days with Typhoon Haikui leaving and the increase in humidity afterwards, which favor the retention of pollutants, forecasters said.

The local weather today and tomorrow should be mostly overcast with showers in some areas, according to the Shanghai Meteorological Bureau.

The maximum temperature should range from 31 to 33 degrees Celsius, the bureau said.

"Shanghai should still be under the edge of the remains of Haikui this weekend, and the showers should be an influence of a trough," Kong Chunyan, a chief service officer of the bureau, said yesterday.

With the strengthening of the subtropical high, the city's temperatures should rise again and reach about 35 degrees next week, according to Kong.


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