Singapore: MPA updates haze advisory guidance for PSI forecast and PM2.5 readings

The Maritime and Port Authority of Singapore (MPA) on Wednesday (21 October) issued Port Marine Notice  No. 140 of 2026 on maritime companies advised to monitor the haze situation by using the PSI forecast and 1-hour PM2.5 readings: 

The National Environment Agency (NEA) has issued a health advisory on planning outdoor activities during haze, which recommends the use of the PSI forecast for next-day outdoor activities, and the 1-hour PM2.5 readings for immediate outdoor activities.

In line with NEA’s health advisory, the Ministry of Manpower (MOM) has issued additional guidance on the use of 1-hour PM2.5 readings to protect outdoor workers. The MOM press release dated 20 October 2026, containing the updated guidelines, is attached at Annex A for reference.

MPA advises all maritime companies to monitor the haze situation through NEA’s website (www.haze.gov.sg) and observe MOM’s haze guidelines (www.mom.gov.sg/haze) when planning and carrying out outdoor work activities.

Companies should use:

1. a) PSI forecast: For planning outdoor work activities for the following day, including identifying activities that should be reduced or rescheduled.
2. b) 1-hour PM2.5 readings: For monitoring prevailing air quality conditions and making timely adjustments to outdoor work activities.

Maritime companies are reminded to review their haze management plans and implement the necessary precautionary measures to safeguard the health and safety of their workers during haze.

Note: MOM press release dated 20 October 2026, containing the updated guidelines, is attached at Annex A for reference, which can be found here. 

Related: Singapore: MPA alerts maritime sector to potential reduced visibility amid haze

Photo credit: Alex Gindin on Unsplash
Published: 22 October, 2026