Singapore’s air quality worsened significantly overnight, with the Pollutant Standards Index (PSI) readings entering the unhealthy category across all regions. The National Environment Agency forecasts conditions will remain variable but hopes for improvement with expected showers in the coming days.
- Air quality PSI hit 108 to 154 on Oct 24 evening.
- Showers expected to help reduce haze in next days.
- NEA issues notices to 10 companies under haze law.
What happened
Air quality across Singapore deteriorated overnight on October 23-24, with the Pollutant Standards Index (PSI) reaching unhealthy levels in all five regions by late evening. At 9pm, PSI readings were highest in the west, ranging from 108 to 154. Hourly PM2.5 particle concentrations—important markers for air pollution—were elevated islandwide, peaking between 64 and 96 micrograms per cubic meter.
The National Environment Agency (NEA) projected the 24-hour PSI for Sunday to range between 80 and 130, indicating a blend of moderate and unhealthy air quality. The agency anticipated winds from the southwest and west could reduce additional smoke haze transport to Singapore, while expected showers were seen as a potential natural aid to improving air conditions over the next few days.
Why it feels good
Despite the current haze, there is reason for optimism as meteorological forecasts predict rainfall over Singapore and surrounding areas, which is likely to help clear the lingering smoke. The presence of wet weather, coupled with shifting winds, offers natural assistance in dispersing haze particles and improving air quality.
Additionally, the government’s proactive approach to tackling the haze problem is gaining momentum. For the first time, the NEA has issued notices under the Transboundary Haze Pollution Act to multiple local companies connected to palm oil and forestry operations, signaling stronger enforcement and accountability measures. Efforts also include a specialist panel to investigate companies’ roles across jurisdictions, underscoring a concerted move towards long-term solutions.
What to enjoy or watch next
Residents are advised to stay informed by checking the latest PSI and PM2.5 readings, which help guide decisions around outdoor activities. Healthy individuals are encouraged to limit prolonged or strenuous exertion outdoors, while vulnerable groups such as children, the elderly, pregnant women, and those with heart or lung conditions should avoid such activities to protect their health during peak haze periods.
Looking ahead, the situation may improve with incoming showers and westerly winds expected to persist into the early part of the week. Meanwhile, keep an eye on developments related to haze investigations and follow any new advisories issued by NEA. Staying indoors with filtered air or enjoying indoor activities can help maintain well-being until air quality returns to safer levels.