Too Many Air Quality Indicators Could Confuse Singapore's Haze Messages, Says Grace Fu

Published 2026-11-03

Singapore's National Environment Agency (NEA) currently gives the public two main indicators of air quality. The first is the Pollutant Standards Index (PSI) forecast, which covers the next 24 hours. The second is an hourly reading of PM2.5, which measures very fine particles in the air that can enter the lungs. Some people may find it hard to understand both at the same time.

Senior Minister of State for Sustainability and the Environment Grace Fu has said that having too many air quality indicators may make public messaging about haze more difficult. When there is haze, people need clear and simple information so that they can decide quickly whether they should stay indoors, wear a mask or change their plans. If the numbers seem to give different messages, residents may become confused about what action to take.

The NEA is reviewing how air quality information is shared with the public. Officials are looking at whether one clear measure would be easier for residents to use in their daily lives. Any change would aim to help people protect their health, especially the elderly, young children and those with breathing problems. Further details about the review have not yet been announced.

For now, residents are advised to check the latest PSI forecast and hourly PM2.5 readings regularly, particularly during the haze season. The NEA also recommends that people follow health advisories and reduce strenuous outdoor activities when air quality is poor.

Sources: The Straits Times

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