Air quality in the 'unhealthy' range across Singapore as haze persists

Singapore's air quality remained in the unhealthy range on Sunday (Oct 11) as lingering haze from southern Sumatra persisted over the island, according to the National Environment Agency (NEA). The 24-hour Pollutant Standards Index (PSI) was recorded in the unhealthy to high unhealthy range across all five regions, with 1-hour PM2.5 readings in the elevated band. The NEA forecasted that the 24-hour PSI would remain in the unhealthy to high unhealthy range for the next 24 hours.

Moderate to dense smoke haze was observed drifting towards Singapore from southern Sumatra, with similar haze also noted in parts of Kalimantan. While some showers were predicted over Singapore and the surrounding area, dry conditions were expected to continue in southern Sumatra and Kalimantan, as stated by the agency.

The haze situation worsened on Friday, with the central region recording a PSI of 192, the highest reading of the year's haze season. At 7am on Saturday, the 24-hour PSI ranged from 116 to 153 across the country, with PM2.5 levels in the elevated band, ranging from 56 to 108. The NEA warned that the 24-hour PSI could surpass 200, entering the Very Unhealthy range, as smoke haze from the region continued to affect Singapore.

The Haze Task Force, consisting of 28 government agencies, has been convened to address the deteriorating air quality. Should the PSI exceed 200, N95 masks will be distributed to eligible Singaporeans, and air-conditioned haze shelters will be set up in community clubs and selected residents' committee and network centers. Preschools and schools may modify or suspend outdoor activities if air quality reaches Very Unhealthy levels, with schools potentially closed if the next day's PSI forecasts exceeding 300.

The Formula 1 Singapore Grand Prix weekend is ongoing, and organizers have implemented contingency measures in case air quality worsens.