Full Breakdown
Haze Emergency Declared in Serian, Sarawak Amid Transboundary Smoke
9/4/2026, 9:46:32 PM
Emergency Triggered by Hazardous Air Quality
On September 4, 2026, Malaysia’s King Sultan Ibrahim Iskandar gave consent to a state of emergency covering the Serian district of Sarawak after the Air Pollutant Index (API) rose above the 500-point emergency threshold. Government data recorded API values ranging from 512 at 8:00 a.m. to a peak of 521 by mid-afternoon, marking the highest hazardous reading in the country that day. The emergency limits non-essential government and private operations while keeping essential services such as supermarkets, petrol stations and banks open.
Background: Regional Fires and Seasonal Haze
The haze originates from forest and peatland fires burning across Indonesia’s Kalimantan region of Borneo. Satellite monitoring by Indonesia’s Forestry Ministry identified 717 hotspots nationwide, with 103 active in the preceding 24 hours. The fires have been intensified by an El Niño pattern that has produced hotter, drier conditions across Southeast Asia. Transboundary haze is a recurring seasonal phenomenon, but the 2026 episode is the worst since 2015, when more than 500,000 people in the region suffered respiratory ailments.
Data & Statistics
- API readings: Serian – 521 (peak); Kuching – 311–313; Samarahan – 281–284; Sri Aman – 236–245.
- School disruptions: Nearly 600 schools around Kuching closed, affecting about 200,000 students; an additional 30 schools closed later, keeping 4,000 children at home. Serian announced its first closure when the API briefly exceeded 200.
- Health impacts: The Ministry of Health reported 1,811 asthma cases during the week of late August, up from 219 the previous week, and 720 conjunctivitis cases, up from 146.
- Fire activity: Hotspots in West Kalimantan rose to 7,377 on September 1, while active fires increased to 104. In Central Kalimantan, hotspots numbered 5,244.
- Cloud-seeding effort: A three-day operation began on September 3, targeting three hydroelectric dams and 13 catchment areas to induce rain and boost water reserves.
Official Statements & Responses
The Prime Minister’s Office said the emergency decision was taken after advice from Prime Minister Anwar Ibrahim, Sarawak Premier Abang Johari Openg, and relevant agencies. Deputy Premier Douglas Uggah Embas explained that areas with API > 500 would be placed under a local emergency, allowing only essential services to operate. The government pledged continuous monitoring, health advice, and mitigation measures, including cloud-seeding flights conducted by the air force, the National Disaster Management Agency and the Malaysian Meteorological Department.
On-the-Ground Reports
Residents in Kuching described “air…very thick” and visibility reduced to about a kilometre. Mother Mia Emylia Hassan recounted that her 10-month-old daughter, still recovering from a lung infection, required repeated emergency-room visits because “she’s not healing properly because her lungs are still developing.”
Conflicting Reports & Gaps
Different outlets reported varying peak API values for Serian on September 4: 521, 519, 518, 515 and 512. All agree the reading exceeded the 500 emergency threshold, but the exact figure remains inconsistent across sources. No source provided a definitive timeline for when the haze will subside, and regional forecasts for rainfall remain uncertain.
What’s Next
Cloud-seeding flights continue while authorities monitor atmospheric conditions for natural rainfall. The Education Ministry will announce whether schools will resume normal operations or shift to home-based learning, as indicated in a statement released on September 4. Regional officials are reviewing the ASEAN Agreement on Transboundary Haze Pollution, with Indonesia’s ambassador expressing support for strengthening the framework.
