 However, in early November, intermonsoonal winds brought slight haze back to Singapore, with the 3-hour PSI in the moderate range most of the time.The highest 3-hour average PSI recorded prior to that point 226 in September 1997.While some Singaporeans began donning face masks, others frequented shopping malls and public places like VivoCity, with many shopping before Deepavali at Little India, and going to Geylang Serai's annual Hari Raya bazaar.