Haze Situation Update (22 October 2023)

Singapore, 22 October 2023 – As at 6pm, the 1-hr PM2.5 concentration readings were 6-19 µg/m3, in Band I (Normal), and the 24-hr PSI was 38-68, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2    Showers were observed over many parts of Singapore and the surrounding region today. 57 hotspots were detected mainly in southern Sumatra, higher than the 7 hotspots detected yesterday. Some slight localised smoke plumes were observed to emanate from a few hotspots in southern Sumatra.

3    For the next few days, showers are expected over most of the region, which should keep the overall hotspot and haze situation subdued. With the prevailing winds forecast to be generally 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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