Some are giving out warm clothing and blankets to those who have to spend the night outside, while others are helping seniors who prefer not to leave home due to the weather with their grocery shopping.
Senior-care associates from Touch Community Services, for example, have been giving sponge baths to seniors who request one.
Mr Kavin Seow, senior director for the elderly group under Touch Community Services, said the organisation is also keeping closer tabs on senior citizens who may suffer from health issues due to the cool weather, and are unable to leave their home to buy groceries.
Restaurant owner Francis Ng, meanwhile, was distributing blankets to those sleeping on the streets last night.
Mount Elizabeth's Dr Leong agreed, saying: "These measures protect not only from influenza, but colds as well.