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Cloud seeding offers potential relief as haze persists across Malaysia

Malaysia has grappled with hazardous air quality for over a month due to transboundary smoke, with authorities exploring cloud seeding as a possible intervention. The technique could potentially aid air quality improvement in the Sepang area this weekend.

LSN Malaysia · 2 October 2026

Persistent haze has affected multiple regions across Malaysia for more than a month, stemming from transboundary smoke originating from neighbouring areas. The poor air quality has prompted authorities to consider various mitigation strategies, with cloud seeding emerging as a potential solution to accelerate pollutant dispersal and improve visibility.

Cloud seeding involves introducing substances such as silver iodide into clouds to stimulate precipitation and potentially clear suspended particles from the atmosphere. The process works by providing nucleation points around which water droplets can form and coalesce, encouraging rainfall that helps remove haze particles from the air. While not a permanent remedy for transboundary pollution, the technique has been utilised in several countries experiencing similar air quality challenges.

Authorities have indicated that cloud seeding operations could be deployed in the Sepang area during the coming weekend, depending on atmospheric conditions and cloud formation. The effectiveness of such operations depends on various meteorological factors, including humidity levels, temperature, and wind patterns. Officials have cautioned that results may vary and that the intervention represents one component of broader air quality management efforts.

Residents are advised to monitor air quality indices and take appropriate precautions, including wearing protective masks during periods of poor air quality. Authorities continue to coordinate with neighbouring countries to address the root causes of transboundary haze while implementing short-term measures to mitigate its local impact.