LSN News › Singapore

World · Singapore Bureau

Singapore PSI expected to reach 100-190 on October 19

The National Environment Agency forecasts moderate to unhealthy air quality levels for Singapore on October 19, with rainfall and winds expected to limit transboundary smoke haze from Kalimantan.

LSN Singapore · 18 October 2026

Singapore PSI expected to reach 100-190 on October 19

Singapore's Pollutant Standards Index is expected to range between 100 and 190 on October 19, according to a forecast issued by the National Environment Agency (NEA).

The PSI reading at the higher end of this range would indicate unhealthy air quality, while the lower end falls within the moderate range. The 24-hour PSI measures concentrations of five key pollutants and guides public health advisories.

Weather conditions on the day are expected to play a significant role in containing smoke haze pollution. Forecasts indicate that rainfall and winds will help limit the transport of smoke haze from Kalimantan across the region to Singapore. These meteorological conditions typically restrict the movement of transboundary haze that originates from land and forest fires in neighbouring Indonesia.

Residents are advised to monitor air quality updates from the NEA throughout the day, particularly those with respiratory conditions or elderly individuals who may be more vulnerable to poor air quality. The agency recommends checking real-time PSI readings and following health guidelines based on the prevailing air quality index.