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Air quality deteriorates across Malaysia as 24 regions breach unhealthy levels

Malaysia's air quality index showed significant deterioration across multiple regions this morning, with Pasir Gudang and Larkin recording particularly poor readings. Twenty-four areas nationwide reported unhealthy API levels as of 9am.

LSN Malaysia · 17 October 2026

Air quality deteriorates across Malaysia as 24 regions breach unhealthy levels

Air quality measurements taken at 9am revealed that nearly two dozen locations across Malaysia had breached unhealthy pollution thresholds, prompting fresh concerns about atmospheric conditions in the region.

Pasir Gudang in Johor recorded notably poor air quality readings described as "very unhealthy," while the nearby Larkin area showed signs of improvement during morning hours. The exact API values and specific pollutants driving the deterioration were not immediately detailed.

The widespread nature of the unhealthy readings, affecting 24 separate areas nationwide, suggests regional pollution patterns rather than isolated incidents. This marks a continuation of air quality challenges that periodically affect Malaysia and its neighbours in Southeast Asia.

Authorities typically monitor API levels closely, with readings exceeding 200 classified as unhealthy and those surpassing 300 considered hazardous. Members of vulnerable populations, including children, the elderly, and those with respiratory conditions, are generally advised to limit outdoor activities when unhealthy air quality persists.

The Malaysian Department of Environment continues to track air quality metrics across the country, providing regular updates to guide public health advisories and environmental management responses.