Singapore experienced an improvement in air quality on October 26, as PM2.5 levels—the measure of fine particulate pollution—returned to normal ranges. The 24-hour Pollutant Standards Index (PSI), which reflects overall air quality based on six key pollutants, remained in the good-to-moderate band across the island.
According to the National Environment Agency, hourly PM2.5 readings across Singapore’s five regions were between 28 and 40 at 6 p.m., while the 24-hour PSI ranged from 67 to 74. This improvement in air quality provided relief to residents who had been enduring hazy conditions for several weeks. The PSI scale categorizes readings from 0 to 100 as good to moderate, while readings from 101 to 200 are considered unhealthy.
Looking ahead, the agency forecasted a moderate PSI of 60 to 90 for October 27. Despite smoke haze being observed over the Indonesian region of Kalimantan, the likelihood of it impacting Singapore was deemed low due to expected northeasterly or southeasterly winds and anticipated showers.
Further variable winds and showers are expected over the weekend of October 28 and 29, which are likely to help suppress hotspot activity and reduce the risk of smoke haze affecting the city-state. As a precaution, authorities have advised residents—especially children, older adults, and those with existing health conditions—to limit outdoor activities if the air quality reaches unhealthy levels.
