Air quality back in unhealthy range in central Singapore as haze persists
The 24-hour PSI reading in central Singapore is at 103 as of 7pm on Thursday.
A view from Jurong West of the haze situation in Singapore on Sep 4, 2026. (Photo: CNA/Ili Mansor)
This audio is generated by an AI tool.
SINGAPORE: Air quality in central Singapore remained in the unhealthy range on Thursday (Sep 10), with the 24-hour Pollutant Standards Index (PSI) at 103 at 7pm as haze persisted.
The 24-hour PSI in the central region first crossed into the unhealthy range late on Wednesday, reaching 102 at 11pm, according to the National Environment Agency (NEA).
It rose to 104 by 6am on Thursday, fluctuating slightly and sitting at 103 as of 7pm, while the other regions remained in the moderate range.
In its advisory on Thursday, NEA said that moderate to dense smoke plumes continued to be detected from fires in southern Sumatra and Kalimantan, with some haze from southern Sumatra drifting towards Singapore.
While some showers are forecast over central and northern Sumatra in the coming days, dry conditions are expected to persist over Kalimantan and southern Sumatra, resulting in a risk of haze in Singapore if fires persist.
NEA put the 24-hour PSI forecast for Singapore in the high moderate to low unhealthy range.
Air quality dipped into the unhealthy range for the first time since 2023 on Sep 4, with the PSI reaching as high as 123 in the central region. This persisted into Sep 5 before air quality returned to the moderate range at 9pm that day.
The unhealthy PSI reading prompted NEA to start providing daily haze advisories from the evening of Sep 4.
The unhealthy PSI band runs from 101 to 200, while a reading is considered "very unhealthy" if it is between 201 and 300, and "hazardous" if it is above 300.
