Air quality improves on Oct 19 as PM2.5 levels ease; haze may return from Oct 20
Residents in Singapore started the week with clearer skies and fresher air on Monday (Oct 19) morning, extending a welcome respite that started on Sunday after a change in wind directions.In its daily haze situation update on Sunday evening, the National Environment Agency (NEA) explained that the improvement in air quality was due to the turning of winds to blow from the south.At 9am, hourly PM2.5 was in the normal bans in the northern (50µg/m3) and southern (39µg/m3) regions. The 24-hour Pollutant Standards Index (PSI) readings there are also in the good-moderate range (PSI 0 to 100)Elsewhere, concentration readings in western (74), central (70) and eastern (69) Singapore are in the low-elevated band. The 24-hour PSI readings in these regions were in the low-unhealthy range.Weather forecast and PSIShowers are forecast over Singapore and the surrounding region on Monday.