- NEA is closely monitoring air quality as PSI nears unhealthy range in central Singapore.
- On the afternoon of Aug 24, one-hour PM2.5 readings reached elevated levels in the central and east regions at 56ug/m3 and above.
The National Environment Agency (NEA) is actively monitoring air quality in central Singapore as PM2.5 levels hit 56ug/m3, approaching unhealthy ranges. This fine particulate matter, primarily from smoke haze due to Indonesian forest fires, poses significant health risks, especially for vulnerable populations.
During hazy conditions, the NEA emphasizes the importance of checking PM2.5 levels before outdoor activities. The 24-hour PSI is calculated from six pollutants, including PM2.5, and indicates overall air quality. A PSI above 100 signals unhealthy air, prompting advisories for outdoor activity.
On August 24, PM2.5 readings in central and eastern regions reached elevated levels, necessitating caution. The NEA advises that when PM2.5 levels are between 151ug/m3 and 250ug/m3, individuals should avoid strenuous outdoor activities for at least an hour. Vulnerable groups, including seniors, pregnant women, children, and those with lung or heart conditions, should refrain from outdoor activities altogether.2
For short exposures, such as commuting, N95 masks are not required, but they are recommended for prolonged outdoor activities when air quality is hazardous, with a PSI exceeding 300.
“The elevated PM2.5 readings on Aug 24 afternoon were recorded in both central and east regions, with levels at 56ug/m3 and above. The public is advised to refer to the appropriate air quality measures, as explained in the ST Explains guide.”
