Haze Situation Update (23 October 2023)

Singapore, 23 October 2023 – The haze situation continues to improve with more rainfall in the surrounding region. As at 5pm, the 1-hr PM2.5 concentration readings were 5-22 µg/m3, in Band I (Normal), and the 24-hr PSI was 48-66, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2    There were showers over Singapore and the surrounding region today. 47 hotspots were detected mainly in the southern and central parts of Sumatra, comparable to the hotspot count of 57 yesterday. Moderate smoke haze was observed over the southern parts of Sumatra.

3    The overall hotspot and haze situation is expected to remain subdued due to the expected wet weather over most of the region, and the prevailing winds are forecast to be light and variable in direction in the coming days. The likelihood of transboundary haze affecting Singapore is assessed to remain 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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