Haze from Indonesian fires pushed air quality into the unhealthy range across all five regions of Singapore on 7 October 2026.
At 11pm, the 24-hour PSI ranged from 109 in the north to 150 in the west, National Environment Agency (NEA) data shows. Central Singapore read 144, the east 132 and the south 120.
NEA classifies a 24-hour PSI of 101 to 200 as unhealthy.
Worse through the day
The readings climbed all day.
At 8am, only three regions were unhealthy: central at 130, east at 119 and west at 118. The north and south crossed 100 by late morning.
The west rose from 118 at 8am to 150 by night.
Where the smoke comes from
NEA said moderate to dense smoke plumes from southern Sumatra and West Kalimantan were drifting towards Singapore.
Hotspots in Kalimantan fell from 438 on 5 October to 178 on 6 October, according to the ASEAN Specialised Meteorological Centre. The smoke kept coming anyway.
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Indonesia is in its worst fire season in years, Bloomberg reported, with blazes burning through dried-out peatland in Kalimantan and Sumatra.
Videos of fires near homes in Kalimantan are spreading on social media. FIS could not verify where or when each clip was taken.
More haze ahead
NEA expects the haze to continue, with east-south-easterly to south-easterly winds and dry weather forecast over Kalimantan and southern and central Sumatra.
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What to do
NEA advises checking the latest one-hour PM2.5 reading before you go outdoors. When it reaches 151 to 250 µg/m³, healthy people should avoid strenuous outdoor activity, and vulnerable people should avoid outdoor activity.
Working outdoors or caring for an elderly employer? Keep windows closed when the readings rise, and keep N95 masks at home.
