24 Hour Pollutant Standards Index (PSI) Singapore Level

You may use the 24 HR PSI index to plan for next day activities.

Region Level
Central 25 - Good
North 20 - Good
South 35 - Good
East 45 - Good
West 21 - Good

24-HR PSI data last updated at 31/01/2023 7:00PM.

1-HR PM2.5 Singapore Level

You may use the PM2.5 index to plan for immediate outdoor activities such as going for a jog.

Region Level
Central 5 (Band 1 - Normal)
North 6 (Band 1 - Normal)
South 9 (Band 1 - Normal)
East 4 (Band 1 - Normal)
West 5 (Band 1 - Normal)

24-HR PSI data last updated at 31/01/2023 7:00PM.

PSI Legend

PSI Level
0 - 50 Good
Normal activities
51 - 100 Moderate
Normal activities
101 - 200 Unhealthy
Healthy Persons: REDUCE prolonged or strenuous outdoor physical exertion
Elderly, Pregnant Woman, Children: MINIMISE prolonged or strenous outdoor physical exertion
Persons with Chronic Lung Disease, Heart Disease: AVOID prolonged or strenous outdoor physical exertion
201 and 300 Very unhealthy
Healthy Persons: AVOID prolonged or strenuous outdoor physical exertion
Elderly, Pregnant Woman, Children: MINIMISE outdoor activity
Persons with Chronic Lung Disease, Heart Disease: AVOID outdoor activity
Above 300 Hazardous
Healthy Persons: MINIMISE outdoor activity
Elderly, Pregnant Woman, Children: AVOID outdoor activity
Persons with Chronic Lung Disease, Heart Disease: AVOID outdoor activity

PM2.5 Legend

PM2.5 Level
0 - 55 Band 1 - Normal
CONTINUE with normal activities
56 - 150 Band 2 - Elevated
REDUCE strenuous outdoor activity for the next hour

Vulnerable persons1: AVOID streneous outdoor activity for the next hour
151 - 250 Band 3 - High
AVOID strenuous outdoor activity for the next hour

Vulnerable persons1: AVOID all outdoor activity for the next hour
251 and above Band 4 - Very High
MINIMISE all outdoor activity for the next hour

Vulnerable persons1: AVOID all outdoor activity for the next hour

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

Source: haze.gov.sg

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