World · Singapore Bureau
Singapore's air quality deteriorates to unhealthy levels amid regional haze
Singapore experienced a significant decline in air quality on September 5, with the Pollutant Standards Index reaching unhealthy levels in some regions. The central area recorded a PSI of 116 by evening, while other parts of the island registered moderate pollution readings.
LSN Singapore ·
Air quality across Singapore deteriorated throughout September 5, with the National Environment Agency recording PSI measurements ranging from the higher end of moderate to unhealthy levels. By 7pm, the central region had reached a PSI of 116, which falls within the unhealthy range, while other regions recorded readings between 83 and 98, classified as the higher end of moderate pollution.
The Pollutant Standards Index is the primary measure used by Singapore's environmental authorities to gauge daily air quality. Readings between 101 and 200 are classified as unhealthy, posing health risks particularly for vulnerable groups including children, the elderly, and those with respiratory conditions.
Regional haze episodes are common in Southeast Asia, particularly during certain months when weather patterns and agricultural burning activities combine to create transboundary air pollution. The variations in PSI readings across different parts of Singapore suggest that pollution levels were unevenly distributed during the day.