Singapore haze improves as PSI turns moderate
Air quality in Singapore has fluctuated between moderate and unhealthy levels due to smoke haze originating from Indonesia. Authorities are monitoring the Pollutant Standards Index and PM2.5 levels as shifting winds and rainfall influence the situation.
Why it matters
Transboundary haze is a recurring environmental and public health issue in Southeast Asia that impacts daily life and economic activity.
Listen SINGAPORE – Air quality in Singapore dipped on Oct 20, with four out of five regions facing unhealthy levels of air pollution.
At 3pm, the 24-hour Pollutant Standards Index (PSI) readings showed moderate air quality in the north (89), but unhealthy levels across the south (104), east (105), west (138) and central (123).
Air quality is considered moderate when the PSI – a 24-hour rolling average of six key air pollutants – is in the range of 51 to 100, and unhealthy when it is in the range of 101 to 200. Beyond 200, it enters the very unhealthy band.
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