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Winds wipe away pollutants
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Strong winds brought by cold front dipped temperatures in the city yesterday, which is expected to further fall today and tomorrow, forecasters said.
The windy condition was just perfect as it drove away the air pollutants. Shanghai’s air quality index (AQI) remained below 50 for much of the day, ensuring a good air quality.
But environmental authorities said the air condition could worsen slightly today in the morning with the AQI exceeding 101 due to the particles brought by the cold air from north.
Yesterday’s PM2.5 density readings mostly remained under 40 micrograms per cubic meter during the day but later soared to 65.6 micrograms at 7pm.
It was sunny yesterday after two days of overcast and rains and the nice weather will last until tomorrow, forecasters said.
It will be cloudy over the weekend.
Temperatures are expected to remain in the single digits but bounce back to 10 degrees on Sunday. The lows in the remainder of this week will hover between 2 and 3 degrees in downtown areas. It could be even lower in the suburban districts.
Sunday is marked Dongzhi, or winter solstice, which is the shortest day of the year.
When cities in neighboring Zhejiang Province experienced their first winter snowfall on Tuesday, it skipped Shanghai because of the city’s humidity and temperatures.
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