Malaysia, Brunei, Indonesia, and Singapore could face severe transboundary haze in the coming months as Southeast Asia has been placed on red alert for an elevated haze risk, according to the Singapore Institute of International Affairs (Siia).

In its Haze Outlook 2026 report released on Wednesday, Siia identified August and September as the peak risk period, with the threat compounded by the El Niño and Indian Ocean Dipole (IOD) weather phenomena...