SINGAPORE: Air quality remained unhealthy across Singapore on Sunday (Oct 25), with the 24-hour Pollutant Standards Index (PSI) readings ranging from 103 to 138 at 8am.
Hourly PM2.5 readings, however, were in the normal band in all five regions, ranging from 43 to 55.
In its evening advisory on Saturday, the National Environment Agency (NEA) said the 24-hour PSI for Sunday was expected to range from 80 to 130, spanning the good to moderate and unhealthy bands.
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