Air quality unhealthy across Singapore amid sustained haze

Singapore's air quality remained largely unchanged early on October 12, with the 24-hour PSI continuing to be in the unhealthy range, according to the National Environment Agency (NEA). The PSI readings ranged from 105 in the north to 148 in the central region, indicating poor air quality. One-hour PM2.5 readings, which gauge current air quality, were in the elevated band across all regions, ranging from 57 in the north to 84 in the central region.

The NEA had forecast this in its daily advisory issued the previous evening, attributing the smoke haze to drifts from southern Sumatra and West Kalimantan. The NEA also noted that showers were forecast over Singapore and its surrounding areas, but dry conditions were predicted to persist over parts of southern Sumatra and Kalimantan, potentially allowing smoke haze to continue drifting towards Singapore under prevailing south-easterly or southerly winds.

The PSI peaked for 2026 on October 9, reaching 192 in the central region between 5pm and 8pm, while the highest hourly PM2.5 reading for the year 2026 was recorded in the west at 171, measured at 2am on October 9. The haze task force had announced measures to be taken if the PSI exceeded 200 and entered the very unhealthy range.

Singapore experienced unhealthy air quality for the first time since October 2023 on September 4, 2026.