| Pollutant Standards Index |
Website Links For Standards |
Information AboutPollutant Standards Index |
|
The PSI is reported as a number on a scale of 0 to 500 and is the air quality indicator. These index figures enable the public to determine whether the air pollution levels in a particular location are good, unhealthy, hazardous or worse. The PSI is used in a number of countries including the United States and Singapore. However, since 1999, the United States EPA has replaced the Pollution Standards Index (PSI) with the Air Quality Index (AQI) to incorporate new PM2.5 and Ozone standards. PSI IN SINGAPORE The highest PSI reading on record in , 07 October 2006 The PSI chart below is grouped by index values and descriptors, according to the National Environment Agency . {Link without Title} Note: This chart reflects those shown in Singapore and may differ for other countries. REFERENCES SEE ALSO EXTERNAL LINKS Articles about Pollutant Standards Index
|
|
|