Singapore air quality enters unhealthy range in central region

Air quality in the central region of Singapore reached unhealthy levels on Friday (Sep 4), with the 24-hour Pollutant Standards Index (PSI) exceeding 100, according to data from the National Environment Agency (NEA). NEA said that it will issue daily haze advisories when the 24-hour PSI enters the unhealthy range. #sgnews #singapore

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