SINGAPORE - Masks will no longer be mandatory in outdoor settings from Tuesday (March 29).

This is because the risk of outdoor transmission is significantly lower, said Prime Minister Lee Hsien Loong, who on Thursday announced the easing of Covid-19 measures as the Omicron wave subsides.

But indoors, mask wearing will remain mandatory.

Safe distancing requirements will still be maintained in mask-off settings to minimise transmission, which means groups must maintain the 1m distance.

The Ministry of Health also encourages people to wear masks even when outdoors for personal protection and to protect others, especially in crowded areas.

Indoor places refer to all buildings or places with clearly defined entrances and exits, such as office buildings, shopping malls, public transport and hawker centres and coffee shops.

Places which are sheltered but with open access generally, such as HDB void decks, HDB corridors, retail block walkways, bus stops, and naturally ventilated bus interchanges will be regarded as outdoor areas.

Here are some examples of places that are considered indoors and outdoors: