Pollutant Standards Index (PSI) Singapore
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 | 52 - Moderate |
| North | 44 - Good |
| South | 47 - Good |
| East | 54 - Moderate |
| West | 45 - Good |
24-HR PSI data last updated at 01/02/2026 7:30PM.
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 | 28 (Band 1 - Normal) |
| North | 18 (Band 1 - Normal) |
| South | 20 (Band 1 - Normal) |
| East | 9 (Band 1 - Normal) |
| West | 8 (Band 1 - Normal) |
1 HR PM2.5 data last updated at 01/02/2026 7:30PM.
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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