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During periods of haze, you can use the health advisory, air quality forecast, 1-hr PM2.5 and daily PSI readings to plan your schedule.
Oct 2, 2019 · There are four bands on the PM2.5 concentration scale: 0 to 55 for normal, 56 to 150 for elevated, 151 to 250 for high, and very high for any higher readings. A 24-hour PSI reading of between 51...
Quick updates at a glance on PSI and PM2.5 readings for the haze situation in Singapore.
Oct 7, 2023 · A PSI reading of 101 to 200 is in the unhealthy range, for which the National Environment Agency (NEA) advises the public to cut down on outdoor activities. Residents in the eastern part of...
Singapore experiences haze from time to time, usually caused by forest fires in the region. It can be made worse by dry seasons, changes in wind direction, and when rainfall is low. The Pollutant Standards Index (PSI) measures the air quality and indicates the severity of haze.
Jun 8, 2023 · A 24-hour Pollutant Standards Index (PSI) reading of between 101 and 200 is considered unhealthy. The index measures six pollutants and is used as an indicator of air quality. People...
Oct 7, 2023 · The 24-hour Pollutant Standards Index (PSI) ranged between 67 and 121 as of 11pm, with the highest reading in the east. NEA regards a reading of 101-200 as "unhealthy".
