Haze in S’pore: Air quality in central region hovers between moderate and unhealthy bands
At 9am on Oct 4, the PSI reading in the central region was 100.
Singapore's central region experienced haze-related air quality fluctuations on October 4, with the 24-hour Pollutant Standards Index (PSI) hovering between moderate and unhealthy bands. The PSI reading began at 100 at 11pm on October 3, rose to 103 by 3am on October 4, and then dropped back to 100 at 9am on October 4. The other parts of Singapore maintained moderate air quality, ranging between 78 and 88 at 9am.
The NEA advises the public to reduce outdoor activities when the 24-hour PSI is in the unhealthy range (101 to 200). Meanwhile, one-hour PM2.5 readings remained in the normal range of 19 to 49 across all regions at 9am, indicating that immediate outdoor activities were not considered elevated. The haze was attributed to smoke plumes drifting from southern Sumatra and fires in Kalimantan, with dry conditions expected to continue on October 4.
Brief written by urgent.news from Straits Times's own syndicated text. Machine-written — may contain errors; check the original before relying on it.
