Singapore’s air quality continues to improve as hourly PM2.5 readings remain in the normal range and the 24-hour Pollutant Standards Index stays in the good-to-moderate band across the island. At 6am on Oct 28, the one-hour PM2.5 readings measured between 26 and 46, while the 24-hour PSI stood between 66 and 76 across all five regions, according to data from the National Environment Agency (NEA).
Forecast And Weather Conditions For Oct 28
In its daily haze advisory issued on the evening of Oct 27, the National Environment Agency stated that the PSI for Oct 28 is forecast to range between 60 and 90, keeping air quality in the moderate category. Smoke haze was observed over Kalimantan and Sumatra on Oct 27, while conditions remained dry over Singapore. Showers are expected over Kalimantan, Sumatra, Singapore, and the surrounding region on Oct 28, which could continue to assist with the haze situation. Winds are forecast to blow from the east-northeast.
Did You Know? PM2.5 readings are gauged hourly to reflect current air quality, with scores from zero to 55 representing normal values and readings between 56 and 150 indicating elevated concentrations of fine particles.
Wind Shifts And Regional Outlook For Oct 29 And 30
For Oct 29 and 30, winds are expected to shift and blow from the east-southeast or south-southeast. The National Environment Agency noted that while this shift could transport smoke haze from southern Sumatra, forecasted showers over the region should help lower the risk of haze.
Expert Insight: Transboundary haze events in Singapore depend on regional wind directions and the transport of smoke haze from southern Sumatra and Kalimantan. While shifts in wind patterns can push smoke toward the island, incoming precipitation serves as a critical natural mechanism to cleanse the air and suppress particulate concentration before it reaches unhealthy thresholds.
Air Quality Readings and PSI Forecast for Oct 28
What were the air quality readings at 6am on Oct 28?
At 6am on Oct 28, one-hour PM2.5 readings were between 26 and 46, and the 24-hour PSI stood between 66 and 76 across all five regions.
What is the PSI forecast for Oct 28?
The National Environment Agency forecast the PSI for Oct 28 to be in the good-to-moderate range of 60 to 90.
How are winds expected to change on Oct 29 and 30?
Winds are expected to blow from the east-southeast or south-southeast on Oct 29 and 30, which could transport smoke haze from southern Sumatra.
How do you plan to adjust your outdoor schedule if the regional wind patterns shift later in the week?
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