Air quality in Singapore improved ahead of Sunday (Oct 25) activities as hourly PM2.5 readings islandwide dropped back into the normal band (0 – 55 µg/m3) by 8am.
The northern, central and southern readings were back in the normal band at 7am, with the eastern and western regions doing so an hour later.
At 9am, hourly concentration readings across Singapore ranged from 28 in the western region to 49 in the central region.
Meanwhile, the 24-hour Pollutant Standards Index (PSI) remains in the unhealthy range, for now.
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