1-hour PM2.5 in west of S'pore hits 171 overnight, within high range
The 24-hour PSI readings remain unhealthy.
Singapore's air quality deteriorated overnight on October 9, with the west region experiencing the most haze. The 24-hour Pollutant Standards Index (PSI) reading soared to 171 at 2am, within the high range that falls between 151 and 250. This marked the highest recorded level in Singapore this year, as per CNA. The reading fluctuated over the following hours, dipping to 114 by 10am but still remaining elevated.
Central Singapore also saw high readings from 11pm to 2am, peaking at 163 at 11pm. The rest of the country largely stayed in the elevated range throughout the night. The one-hour PM2.5 readings offer a real-time measure of air quality during hazy conditions, enabling the NEA to provide live updates. When these readings are in the elevated range, the public is advised to limit strenuous outdoor activity for the next hour, especially the elderly, pregnant women, children and those with chronic heart or lung conditions.
Smoke plumes from southern and central Sumatra and West Kalimantan were observed drifting towards Singapore, likely due to prevailing winds.
Written by urgent.news from Mothership's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
