On Sunday, 11 October, the 24‑hour PSI was in the unhealthy range in all five regions of Singapore.

The central region recorded a PSI of 192 at 5 pm on Friday, the highest reading of this year’s haze season.

The National Environment Agency warned that the 24‑hour PSI could rise above 200 and enter the Very Unhealthy range. Singapore’s Haze Task Force, made up of 28 government agencies, is ready to act. If the PSI goes over 200, N95 masks will be given out and air‑conditioned haze shelters will be opened.

If the forecast shows the next day’s 24‑hour PSI will be over 300, which is the Hazardous range, schools may be closed. The decision will be announced by the Ministry of Education in the evening.