Haze Situation Update (21 October 2023)

Singapore, 21 October 2023 – As at 6pm, the 1-hr PM2.5 concentration readings were 5-12 µg/m3, in Band I (Normal), and the 24-hr PSI was 34-56, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2    There were some showers over parts of Singapore and the surrounding region today. Hotspot activity in the region was generally subdued, with seven hotspots detected in southern Sumatra, comparable to the three hotspots detected yesterday. No significant smoke haze was observed due to rain and cloud cover.

3    In the coming days, showers are expected over Singapore and the surrounding region. The prevailing winds are forecast to be light and variable in direction. The regional hotspot and haze situation is expected to remain subdued and 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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