Singapore Air Quality Remains Unhealthy Sunday, With PSI at 116–153

Singapore’s 24-hour Pollutant Standards Index ranged from 116 to 153 at 7am on October 11, leaving all five regions in the unhealthy range. The highest readings were in the west and central regions, while the south recorded the lowest. The National Environment Agency said in its October 10 advisory that moderate to dense smoke haze from southern Sumatra had drifted towards Singapore. Smoke haze was also observed in parts of Kalimantan. The latest readings followed a range of 118 to 168 at 7pm on October 10.