Singapore haze: PSI hits unhealthy range across central, eastern and western regions

Air quality in Singapore deteriorated sharply on 27 September 2026, with the 24-hour Pollutant Standards Index (PSI) reaching 128 in central Singapore, 115 in the east, and 106 in the west — all in the unhealthy range (101–200). The National Environment Agency attributed the haze to dry conditions in neighbouring regions and winds carrying smoke particles to Singapore. A half-marathon race in the city was shortened from 21.1km to 10km due to the poor air quality.