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Quick updates at a glance on PSI and PM2.5 readings for the haze situation in Singapore.
The Pollutant Standards Index (PSI) measures the air quality and indicates the severity of haze. A PSI reading of 101 and above is deemed unhealthy. MOH will issue haze health advisories based on the 24-hour PSI when the daily average of PSI levels over a few days is deemed unhealthy.
Oct 7, 2023 · The 24-hour Pollutant Standards Index (PSI) readings ranged between 67 and 123 at 9pm, with the highest recorded reading in the east. A PSI reading of 101 to 200 is in the unhealthy range,...
Sep 19, 2019 · The 24-hour Pollutant Standards Index (PSI) is computed based on six air pollutants - PM2.5, PM10, ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide. It was developed as an...
Oct 2, 2019 · A 24-hour PSI reading of between 51 and 100 falls in the moderate range, for which the public can continue their normal activities. If the PSI reading is in the unhealthy range of 101...
5 days ago · Read about today's 1-HR PM2.5 and 24-HR Pollutants Standard Index live from NEA.
