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Unhealthy air quality blankets Peninsular Malaysia as API levels spike

Air pollution has reached unhealthy levels across much of Peninsular Malaysia, with the Klang Valley experiencing particularly poor conditions. Johan Setia in Selangor is approaching very unhealthy status, though Serian in Sarawak currently records the nation's highest Air Pollutant Index reading.

LSN Malaysia · 15 September 2026

Unhealthy air quality blankets Peninsular Malaysia as API levels spike

Air quality has deteriorated significantly across Peninsular Malaysia, with multiple monitoring stations reporting unhealthy pollution levels on Tuesday. The Klang Valley, home to millions of residents and businesses, is among the affected areas, raising concerns about public health and outdoor activities.

Johan Setia in Selangor has emerged as a particular concern, with air quality indices nearing the very unhealthy threshold. The situation has prompted environmental authorities to monitor conditions closely as pollution levels continue to fluctuate.

Nationwide, Serian in Sarawak is currently experiencing the highest API reading, indicating that poor air quality is not confined to the peninsula. The widespread nature of the pollution suggests regional atmospheric conditions are contributing to the degradation across multiple states.

Authorities have advised the public, particularly those with respiratory conditions, the elderly, and children, to limit outdoor activities and consider wearing protective masks. The government continues to monitor air quality trends and may issue further advisories if conditions worsen.