SINGAPORE – The air quality across the island deteriorated overnight, with the 24-hour Pollutant Standards Index (PSI) recording unhealthy levels of air pollution early on Oct 24.
At 7am, the PSI readings were 115 in the north and south regions, 117 in the east, 142 in the west and 133 in the central region.
The PM2.5 readings – which are gauged hourly and reflect the current air quality – were also elevated across the country.
At 7am, the PM2.5 readings were 79 in the north, 78 (south), 68 (east), 107 (west) and 94 (central).
There had been a brief respite from the haze early on Oct 23, when PSI readings were in the good to moderate range and PM2.5 levels were in the normal range.
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