On October 26, Singapore experienced an improvement in air quality, with hourly PM2.5 readings returning to the normal range. The 24-hour Pollutant Standards Index (PSI) also remained in the good-to-moderate band across the island, providing some relief to residents after several weeks of hazy conditions.
At 6 p.m., PM2.5 readings, which measure fine particulate pollution, ranged between 28 and 40 across Singapore’s five regions. Concurrently, the 24-hour PSI, which reflects overall air quality based on six key pollutants, ranged from 67 to 74. A PSI reading between 0 and 100 is considered good to moderate, while readings from 101 to 200 indicate unhealthy air quality.
Looking ahead, the National Environment Agency has forecast a moderate PSI of 60 to 90 for October 27. Although smoke haze was detected over Kalimantan, the likelihood of it affecting Singapore is considered low due to expected northeasterly or southeasterly winds and forecast showers. Authorities anticipate variable winds and further showers on October 28 and 29, which may help suppress hotspot activity and reduce the risk of smoke haze.
Residents, especially children, older adults, and those with existing health conditions, are advised to limit outdoor activities if air quality reaches unhealthy levels. This precaution is part of ongoing efforts to mitigate health risks associated with fluctuating air quality.