Haze watch Oct 21: PM2.5 levels normal in north, east and south Singapore
Singapore is bracing for what could be up to two days of poor air quality, with winds forecast to blow from the east-southeast to south-east — again transporting smoke haze from fires in Kalimantan to the city state.In its daily haze situation update on Oct 20 evening, the National Environment Agency (NEA) said showers are expected over the northern and western regions and the surround region.However, dry conditions are likely to persist over the southern parts of Kalimantan over the next few days."Under prevailing east-southeasterly to southeasterly winds, smoke haze may drift from fires in Kalimantan towards Singapore," NEA said.The 24-hour Pollutant Standard Index (PSI) forecast for Singapore is 110 to 180 — in the unhealthy range.At 9am on Wednesday (Oct 21), hourly PM2.5 in the northern (42), eastern (53) and southern (41) regions were in the normal band (0 to 55µg/m3). PSI in these areas were also in the moderate range (PSI 0 to 100).