Science & Tech · Science & Environment · 3 hrs ago
Singapore PM2.5 readings return to normal across the island
Singapore’s one-hour PM2.5 readings returned to normal islandwide by 8am on Sunday, Nov 1.
The west briefly entered the elevated band at 5am and 6am, with readings reaching 59.
At 8am, the 24-hour Pollutant Standards Index was between 68 and 86, in the moderate range.
The National Environment Agency said moderate haze remained over parts of Kalimantan, while showers across the region were expected to keep haze subdued.
The agency forecast a 24-hour PSI of 51 to 70 for Sunday and said people could continue usual outdoor activities.
People should check the PSI for planning and PM2.5 for immediate conditions; when PM2.5 is elevated, vulnerable groups should avoid strenuous outdoor activity for that period.
Singapore’s 1-hour PM2.5 readings were back in the normal range across the island on Sunday, Nov 1.
The western region briefly recorded elevated readings of 59 at 5am and 6am.
At 8am, readings across the five regions ranged from 35 to 51.
The 24-hour PSI ranged from 68 to 86 at 8am, in the moderate range.
The National Environment Agency said showers were expected to keep haze subdued on Sunday.
- Who
- Singapore residents and the National Environment Agency (NEA).
- What
- 1-hour PM2.5 readings returned to the normal range islandwide after elevated readings in the west.
- When
- Sunday, Nov 1, 2026; readings were normal across the island at 8am.
- Where
- Singapore, with the west briefly recording elevated readings.
- Why
- NEA said showers over the region were expected to keep the haze situation subdued.
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Air quality had remained in the good-to-moderate range since 11pm.
NEA said moderate haze remained confined to parts of Kalimantan and forecast showers that could keep haze subdued on Sunday.
The western region recorded elevated 1-hour PM2.5 readings, reaching 59.
Readings across Singapore’s five regions were in the normal band, ranging from 35 to 51.
- 1-hour PM2.5 at 8am
- 35 to 51 across the five regions
- Western region
- Elevated readings reached 59 at 5am and 6am
- 24-hour PSI at 8am
- 68 to 86, in the moderate range
- 24-hour PSI forecast for Sunday
- 51 to 70
- NEA haze advisory
- Moderate haze remained confined to parts of Kalimantan