Haze in Singapore: PM2.5 readings return to normal but PSI remains in unhealthy range across the island
Singapore is experiencing unhealthy air quality levels due to smoke haze drifting from Sumatra and Kalimantan. While PM2.5 readings have normalized, the 24-hour PSI remains in the unhealthy range for several regions, prompting health advisories.
Why it matters
Public health in Southeast Asia is frequently impacted by transboundary haze, necessitating ongoing monitoring and government health warnings.
Hazy conditions seen at the Merlion Park at 1.40pm on Oct 24.
Listen SINGAPORE – The hourly PM2.5 readings returned to normal across all five regions in Singapore on the morning of Oct 25, even as the 24-hour PSI levels remain in the “unhealthy” range for three regions.
At 1pm, the PM2.5 readings ranged between 30 and 52, within the “normal” band.
PM2.5 readings are gauged hourly and reflect the current air quality. Scores from zero to 55 represent normal values, and those between 56 and 150 indicate an elevated concentration of fine particles.
Hourly PM2.5 readings across the island had stayed in the elevated range since the evening of Oct 24 and into the early hours of Oct 25.
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