SINGAPORE, Oct 19 — Sun shined brightly, along with clearer skies and fresher air continued into a second day today amid a favourable wind direction.

Throughout the day, hourly PM2.5 was mostly in the normal band (0 to 55µg/m3) in the northern, eastern and southern regions, with 24-hour Pollutant Standards Index (PSI) in these areas also remaining in the good-to-moderate range.

In central and western Singapore, the concentration reading was in the low-elevated band, while PSI dropped towards the low-unhealthy range.

At 6pm, concentration readings ranged from 51 in eastern Singapore to 79 in the central region.