Singapore 24-Hour PSI and 1-Hour PM2.5 Readings

Updated:
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24-Hour Weather Forecast

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-°C

PSI Forecast

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North -
PM2.5 -
-
West -
PM2.5 -
-
Central -
PM2.5 -
-
East -
PM2.5 -
-
South -
PM2.5 -
-

24-hour PSI

0-50
GOOD
51-100
MODERATE
101-200
UNHEALTHY
201-300
VERY UNHEALTHY
>301
HAZARDOUS

1-hour PM2.5

0-55
NORMAL
56-150
ELEVATED
151-250
HIGH
>251
VERY HIGH

The 1-hour PM2.5 concentration indicates the current air quality. When planning activities within the next few hours, the public are advised to refer to the latest 1-hr PM2.5 readings before proceeding.

Health Advisory

0-55 GOOD - MODERATE
  • Continue with normal activities
  • Operating normally
56-150 ELEVATED

Healthy persons: Reduce strenuous outdoor activities and work

* Vulnerable persons: Avoid strenuous outdoor activities and work

151-250 HIGH

Healthy persons: Avoid strenuous outdoor activities and work

* Vulnerable persons: Avoid all outdoor activities and work; wear a mask to reduce exposure

>251 VERY HIGH

Healthy persons: Minismise all outdoor activities and work; wear a mask to reduce exposure

* Vulnerable persons: Avoid all outdoor activities and work; wear a mask to reduce exposure

* Vulnerable persons include the elderly, pregnant women, children, and persons with chronic lung disease or heart disease.

Source: haze.gov.sg