Singapore’s air quality worsens, all regions record unhealthy levels

Singapore’s air quality has deteriorated nationwide, with all five regions recording unhealthy 24-hour Pollutant Standards Index (PSI) readings.

Data from the National Environment Agency (NEA) showed that the Central region recorded the highest 24-hour PSI of 166 as of 11 am on Tuesday.

The West recorded a PSI of 149, followed by the East at 136, South at 132 and North at 108.

The 24-hour PSI indicates Singapore’s daily air quality and forms the basis of the NEA’s daily health advisories. Under the PSI scale, air quality is deemed unhealthy when readings range from 101 to 200, very unhealthy from 201 to 300 and hazardous when they exceed 300.

Meanwhile, the Asean Specialised Meteorological Centre (ASMC), in its daily weather and haze report, said moderate transboundary smoke haze was observed covering parts of Peninsular Malaysia, Singapore and the northwestern parts of Borneo. 

Moderate to dense smoke plumes were also observed emanating from hotspot clusters detected in large parts of Kalimantan as well as the central and southern parts of Sumatra. 

“Many air quality stations in Borneo, Sumatra, Singapore and some parts of Peninsular Malaysia are reporting unhealthy to hazardous levels,” it said.