SINGAPORE: Air quality in Singapore worsened on Tuesday afternoon (Sep 17), hitting unhealthy levels after a day of improved readings.
At 4pm, the 24-hour PSI stood at 102 in the west and south, 93 in the east, 92 in the north and 91 in the central region.
AdvertisementAdvertisementAccording to the National Environment Agency (NEA), PSI readings of 50 and below denote “good” air quality, “moderate” for 51-100 and “unhealthy” for 101-200.
The one-hour PM2.5 concentration reading ranged from 73-90 µg/m3 at 4pm, within the elevated range.
???????PM2.5 is a measure of tiny particles less than 2.5 micrometres in diameter in the air. When the PM2.5 reading is in the elevated range, haze particles can affect the heart and lungs, especially in people who have chronic heart or lung conditions.
[h=3]READ: Cutting through the haze: When do you need an N95 mask?[/h] AdvertisementAdvertisementLast Saturday, the PSI reading reached the unhealthy level for the first time since August 2016 as it surpassed the 100 mark.
In a weather advisory on Monday, the Meterological Service Singapore warned of further potential hazy conditions in the next two weeks, depending on wind conditions and the proximity and extent of forest fires in Indonesia.
[h=3]READ: 'Robust action plans' in place to mitigate haze impact: NEA[/h]Authorities have put in place "robust action plans" to minimise and manage the impact of haze on the public, NEA said on Tuesday.
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