Air quality back at unhealthy levels in central Singapore
The 24-hour Pollutant Standards Index (PSI) in the central region crossed into the unhealthy band at 1pm on Saturday (Sep 19).
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SINGAPORE: Air quality in the central region of Singapore returned to the unhealthy range on Saturday (Sep 19).
The 24-hour Pollutant Standards Index (PSI) in the region hit 102 at 1pm and continued to inch up through the day, rising to 113 by 11pm.
Air quality remained in the moderate range for the other regions of the country.
PSI readings have dipped in and out of the unhealthy range over the past weeks.
The central region last recorded unhealthy air quality on Thursday evening. On Tuesday, all five regions of Singapore recorded unhealthy air quality levels, marking the first time this has happened since September 2019.
On Saturday, the National Environment Agency (NEA) said in its daily haze advisory that the 24-hour PSI was forecast to be in the high moderate to mid unhealthy range.
There is a risk of smoke haze affecting Singapore as the prevailing winds are expected to blow from the east-southeast or southeast, it said.
"Dry conditions continued and are expected to persist over Kalimantan and southern Sumatra," said NEA, adding that smoke plumes from fires in these areas were observed to be drifting towards Singapore.
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