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PSI Readings over the last 24 Hours

Air quality readings will be available hourly from 1am to 12am.

24-hr PSI Readings from 1am to 12am on 02 Sep 2014

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
North 62 62 62 62 62 62 62 62 63 62 62 62
South 60 60 60 60 60 60 60 60 60 60 60 60
East 60 60 60 60 60 60 60 59 59 59 59 59
West 65 65 65 65 65 64 65 65 64 64 65 64
Central 59 59 59 59 59 59 59 60 60 60 60 60
Overall Singapore 59-65 59-65 59-65 59-65 59-65 59-64 59-65 59-65 59-64 59-64 59-65 59-64
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
North - - - - - - - - - - - -
South - - - - - - - - - - - -
East - - - - - - - - - - - -
West - - - - - - - - - - - -
Central - - - - - - - - - - - -
Overall Singapore - - - - - - - - - - - -

3-hr PSI Readings from 1am to 12am on 02 Sep 2014

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
3-hr PSI 62 61 60 59 59 59 59 60 61 62 62 64
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
3-hr PSI - - - - - - - - - - - -

Hourly updates of 3-hr PSI readings are provided from 1am to 12am. The 3-hr PSI readings are calculated based on PM2.5 concentrations only.

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