Haze watch: PSI across Singapore remains unhealthy, PM2.5 improves in northern and southern regions
The 2026 Formula 1 Singapore Grand Prix may be over, with Red Bull Racing's Max Verstappen conquering the Marina Bay Street Circuit, but the haze is still here.At 9am, PSI remains in the unhealthy range across Singapore, ranging from 104 in the northern region to 148 in the western region.The next highest recordings were recorded in central (146) and eastern (133) Singapore.Meanwhile, one-hour PM2.5 is back in the normal band in the southern (44) and northern (53) regions, but remains elevated in western (106), central (80) and eastern (66) Singapore.PSI, weather forecastIn its daily haze situation update on Sunday evening, the National Environment Agency said the 24-hour PSI is forecast to be in the unhealthy range. It explained that the prevailing south-easterly or southerly winds means smoke haze from southern Sumatra and west Kalimantan could continue to affect Singapore.