Forecast  Rain  Readings  Air Quality  Text  i
24-hr PSI: 67-74; 3-hr PSI: 71                at 3pm on 31 Oct 14
Moderate to heavy thundery showers are expected over many areas of Singapore between 3:20pm and 4:45pm. PUB says flash floods may occur in the event of heavy rain. For flash floods updates, visit PUB Facebook: or PUB Twitter:


24-hr PSI is updated at 8am, 12 noon and 4pm daily.

PSI Value Air Quality Descriptor
0 - 50 Good
51 - 100 Moderate
101 - 200 Unhealthy
201 - 300 Very Unhealthy
Above 300 Hazardous

PM2.5 refers to fine particulate matter of 2.5 µm or less in aerodynamic diameter.

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