Haze: Air quality in Serian improves slightly to very unhealthy levels at 4pm on Sept 5
PETALING JAYA: Serian in Sarawak's hazardous-level Air Pollutant Index (API) readings improved slightly from hazardous levels in the morning to very unhealthy as of 4pm on Saturday (Sept 5), with five other areas nationwide also recording very unhealthy levels.
