1-hour PM2.5 level rises to elevated band in northern Singapore
The National Environment Agency has said that the likelihood of smoke haze affecting Singapore on Tuesday is low.
People row a canoe along the Kallang river as the haze eases in Singapore on Oct 23, 2026. (File photo: AFP/Roslan Rahman)
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SINGAPORE: The 1-hour PM2.5 level in northern Singapore rose to the elevated range on Tuesday afternoon (Oct 27), although overall air quality across the country remained in the good-to-moderate range.
The 1-hour PM2.5 reading in the north entered the elevated band at 4pm for the first time that day, while readings in the other regions remained within the normal band, ranging from 22 to 40.
The 24-hour Pollutant Standards Index (PSI) ranged from 62 to 76 at 4pm, with the highest reading recorded in the west.
Air quality across Singapore has remained in the good-to-moderate range since 11pm on Sunday.
The National Environment Agency (NEA) has said that the likelihood of smoke haze affecting Singapore is low.
The National Environment Agency (NEA) said prevailing winds were expected to blow from the northeast or southeast, with showers forecast over Singapore and the surrounding region.
"Under these conditions, the likelihood of smoke haze affecting Singapore is low," it said.
For Wednesday and Thursday, winds are forecast to become variable, with showers expected over Singapore and the surrounding region. The wet conditions should help keep hotspot and smoke haze activity suppressed, NEA added.
NEA has advised the public to refer to the 24-hour PSI forecast when planning outdoor activities and to check the latest 1-hour PM2.5 readings before undertaking immediate outdoor activities.
Based on the 24-hour PSI forecast for Tuesday, all individuals can engage in outdoor activities as usual.
When hourly PM2.5 concentrations are in the elevated band, healthy individuals should reduce strenuous outdoor activities for the next hour.
Vulnerable groups, including children, elderly people, pregnant women and those with chronic heart or lung conditions, should avoid strenuous outdoor activities during that period.
