Hazy conditions return as 24-hour PSI readings edge towards unhealthy region

Today Online 21 Apr 17;

SINGAPORE — Residents in southern and eastern Singapore woke up to the unwelcome sight of hazy skies, as the 24-hour Pollutant Standards Index (PSI) readings edged towards to the unhealthy region on Friday (April 21) morning.

According to the National Environment Agency (NEA), the overall 24-hour PSI readings for Singapore at 7am was between 62 and 93. The southern and eastern parts of Singapore registered the highest readings, at 93 and and 87 respectively.

The 24-hour PSI readings have been steadily climbing in the last 12 hours, from between 60 to 84 at 8pm on Thursday to the current level. The current 24-hour PSI readings are within the moderate range.

The air quality is considered to be in the unhealthy range when the 24-hour PSI readings are above 101, according to the NEA.

Meanwhile, the agency said on Twitter that heavy thundery showers with gusty wind are expected over many areas of Singapore this morning.

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