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Serian Air Pollution Hits Critical Levels As API Reading Exceeds 500, Emergency Could Be Declared

Serian’s API rose to 518, and officials said 68 monitoring stations nationwide showed air quality ranging from unhealthy to hazardous.

  • On Friday, Serian in Sarawak recorded a hazardous Air Pollutant Index reading of 518 as of 10am, surpassing the 500 threshold for emergency declarations.
  • The Asean Secretariat activated Alert Level 3 for the southern Asean region following increased hotspot activity, with satellite imagery detecting 144 hotspots in Sumatra and dense smoke from Kalimantan.
  • Aside from Serian, Kuching recorded a hazardous API of 310, while Samarahan and Sri Aman reached 281 and 245 respectively, indicating very unhealthy conditions.
  • Sarawak State Secretary Datuk Zainudin Aman previously stated that authorities would declare a haze emergency or disaster when API readings reached 500 and above.
  • Government agencies continue monitoring air quality through the National Haze Action Plan, with data updated hourly from 68 monitoring stations nationwide to track developments.
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(Kuching, April 4) The haze situation in Sarawak continues to worsen, with Serian's Air Pollution Index (API) exceeding 500 points this morning, soaring to 518 points at 10:00 AM, reaching a dangerous level.

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The Star Kuala Lumpur broke the news in Petaling Jaya, Malaysia on Thursday, September 3, 2026.
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