Air Quality Forecast
24-hour PSI: Moderate – Low Unhealthy
Health Advisory
Healthy persons: If 24 hr PSI is Moderate, normal activities. If 24 hr PSI is Unhealthy, reduce prolonged or strenuous outdoor physical exertion.
Elderly, pregnant women & children: If 24 hr PSI is Moderate, normal activities. If 24 hr PSI is Unhealthy, minimise prolonged or strenuous outdoor physical exertion.
Persons with chronic lung/heart disease: If 24 hr PSI is Moderate, normal activities. If PSI is Unhealthy, avoid prolonged or strenuous outdoor physical exertion.
Refer to the 1-hr PM2.5 for immediate activities, and the 24-hr PSI forecast to plan ahead.
Singapore, 11 September 2026 – Heavy showers fell over Singapore today. As at 6pm, the 1-hr PM2.5 concentration readings were 12 – 20 µg/m3, in Band 1 (Normal), and the 24-hr PSI was 69 – 88, in the Moderate range.
Update on Hotspot and Haze Situation
- Moderate to dense smoke plumes continue to be observed from fires in southern Sumatra and Kalimantan.
- While showers can be expected over northern and central Sumatra over the next few days, dry conditions are forecast over Kalimantan and southern Sumatra. Under the prevailing southeasterly or southerly winds, there remains a risk of smoke haze affecting Singapore. The 24-hr PSI for Singapore is forecast to be in the Moderate – Low Unhealthy range.
Activity Guidelines
- The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.
- For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website ( www.weather.gov.sg), mobile app (myENV) or follow us on NEA Facebook (www.facebook.com/NEASingapore). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at http://asmc.asean.org.
Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.
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