Current PSI Singapore: Air Quality Update for June 2024
If you live in Singapore, you are likely familiar with the term PSI. PSI stands for Pollutant Standards Index, and it is a measure of air quality used by the National Environment Agency (NEA). The PSI is based on the levels of six pollutants: particulate matter (PM10 and PM2.5), sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone.

The NEA releases hourly updates on the PSI, which ranges from 0 to 500. A PSI reading of 0 to 50 is considered good, while a reading of 101 to 200 is considered unhealthy. If the PSI reaches 201 to 300, it is considered very unhealthy, and a reading of 301 to 500 is considered hazardous. During times of haze, the PSI can reach very high levels, causing health concerns for those living in Singapore.
Key Takeaways
- The PSI is a measure of air quality used by the National Environment Agency in Singapore.
- The PSI ranges from 0 to 500, with readings above 100 considered unhealthy.
- During times of haze, the PSI can reach very high levels, causing health concerns for those living in Singapore.
Understanding PSI and Air Quality in Singapore

What Is the Pollutant Standards Index (PSI)?
The Pollutant Standards Index (PSI) is a measure of air quality used in Singapore to provide information on the level of air pollution. It is calculated based on the concentration levels of six pollutants, namely PM2.5, PM10, carbon monoxide, ozone, nitrogen