SINGAPORE \u2013 The air quality in Singapore deteriorated on Oct 9, with the central region hit the hardest.<\/p>\n
The 24-hour Pollutant Standards Index (PSI) level there rose to 186 at 2pm, the highest so far in 2026, while the hourly PM2.5 reading stood in the \u201celevated\u201d band at 131.<\/p>\n
PSI readings across all regions in Singapore \u2013 including that of the central area \u2013 have been inching upwards since morning.<\/p>\n
At 9am, the central region logged a reading of 170, surpassing the previous high of 167 recorded in the same area on Sept 29.<\/p>\n
By 2pm, the PSI in the central region had hit 186.<\/p>\n PSI readings across all five regions in Singapore have remained largely in the unhealthy range over the past 24 hours.<\/p>\n ST PHOTO: KUA CHEE SIONG<\/p>\n<\/figcaption><\/figure>\n Meanwhile, PSI readings in the other parts of the island stood at 130 in the north, 164 in the south, 159 in the east, and 177 in the west.<\/p>\n Air quality is considered unhealthy when the PSI \u2013 a 24-hour rolling average of six key air pollutants \u2013 is in the range of 101 to 200.<\/p>\n PSI readings across all five regions in Singapore have remained largely in the unhealthy range for most of Oct 8 and Oct 9, with some areas dipping into the moderate range between 6pm on Oct 8 and 1am on Oct 9.<\/p>\n Since 2am, all regional readings have returned to the unhealthy range.<\/p>\n<\/picture><\/div>