Haze Situation Update (18 October 2023)

Singapore, 18 October 2023 – There were thundery showers over many areas in Singapore in the late morning and afternoon today. As at 5pm, the 1-hr PM2.5 concentration readings were 5-12 µg/m3, in Band I (Normal), and the 24-hr PSI was 52-64, in the Moderate range.

Update on Hotspot and Haze Situation

2    Wetter conditions were observed over many parts of the surrounding region today. 100 hotspots were detected in southern and central Sumatra, lower than the 530 hotspots detected yesterday. Localised smoke plumes were observed to emanate from isolated hotspots in southern Sumatra.

3    More showers are forecast for Singapore and the surrounding region over the next few days, which should further improve the regional hotspot and haze situation. The prevailing winds are forecast to weaken and become light and variable in direction. The likelihood of transboundary haze affecting Singapore is assessed to be low. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    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.

5    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) and NEA Twitter (@NEAsg). 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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