Air Quality Forecast
PSI Forecast: 80 - 130 (Moderate to Unhealthy)
Health Advisory
Healthy persons :PSI Forecast-Unhealthy. To plan for 25 Oct, reduce prolonged or strenuous outdoor physical exertion. For immediate outdoor activities, use 1h PM2.5. If Normal PM2.5, continue with normal activities. If Elevated PM2.5, reduce strenuous outdoor activity.
Elderly, pregnant women & children :PSI Forecast-Unhealthy. To plan for 25 Oct, minimise prolonged or strenuous outdoor physical exertion. For immediate outdoor activities, use 1h PM2.5. If Normal PM2.5, continue with normal activities. If Elevated PM2.5, avoid strenuous outdoor activity for the next hour.
Persons with chronic lung/heart disease :PSI Forecast-Unhealthy. To plan for 25 Oct, avoid prolonged or strenuous outdoor physical exertion. For immediate outdoor activities, use 1h PM2.5. If Normal PM2.5, continue with normal activities. If Elevated PM2.5, avoid strenuous outdoor activity for the next hour.
Refer to the 1-hr PM2.5 for immediate activities, and the 24-hr PSI forecast to plan ahead.
Singapore, 24 October 2026 – The PSI forecast for 25 Oct 2026 is 80 – 130 (Moderate to Unhealthy).
2. The PSI forecast and corresponding health advisories should be used for planning next day outdoor activities.
3. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide on our haze microsite (www.haze.gov.sg) or mobile app (myENV).
Update on Hotspot and Haze Situation
4. Heavy showers fell over parts of Singapore today. As at 5pm, the 1-hr PM2.5 concentration readings were 33 – 97 µg/m3, in (Band 2, Elevated), and the 24-hr PSI was 108 – 151, in the Unhealthy range. Some smoke haze from Sumatra was observed drifting towards Singapore. Smoke haze was also observed over Kalimantan.
5. For tomorrow, winds are expected to blow from the southwest or west, which could limit transport of smoke haze to Singapore. Showers are expected over Singapore and the surrounding region which may help with the haze conditions.
6. For Monday and Tuesday, the winds are expected to continue blowing from the southwest or west. With showers expected over Singapore and the vicinity, the haze situation is likely to improve.
Activity Guidelines
7. The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity.
8. 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. The full extent of the hotspot and smoke haze situation could not be determined due to cloud cover.
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