SINGAPORE: Air quality remained unhealthy across Singapore on Sunday (Oct 25), with the 24-hour Pollutant Standards Index (PSI) readings ranging from 105 to 142 at 6am.
Hourly PM2.5 readings, meanwhile, were elevated in all five regions of the country, ranging from 58 to 78.
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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