A total of 25 locations across Malaysia recorded unhealthy levels of air pollution, with Batu Muda in Kuala Lumpur reporting the highest Air Pollutant Index (API) reading at 166 as of 7 p.m. on Monday, according to data from the Environment Department’s Air Pollutant Index of Malaysia (APIMS) portal.

In Johor, five areas registered unhealthy air quality: Tangkak (158), Pasir Gudang (156), Batu Pahat (153), Larkin (151), and Kota Tinggi (120). Selangor also saw several areas with elevated pollution levels, including Johan Setia (164), Petaling Jaya (160), Shah Alam and Klang (both at 156), and Banting (154).

Several towns in Melaka reported unhealthy API numbers, with Bukit Rambai at 163, Alor Gajah at 160, and Bandaraya Melaka at 159. In Negri Sembilan, both Nilai and Seremban posted readings of 162.

Other affected locations included Cheras (156) and Putrajaya (154) in the Kuala Lumpur metropolitan area. In Pahang, Rompin logged an API of 153, while Indera Mahkota recorded 152 and Balok Baru had a reading of 106, both situated in Kuantan. Perak’s Tasek Ipoh and Pegoh, Ipoh, registered 152 and 151 respectively. In Sarawak, Sri Aman logged 135, and IPD Serian recorded 120.

Beyond the 25 sites with unhealthy air pollution levels, 39 areas were classified under moderate air quality, and four areas reported good air quality readings during the same period. The Environment Department continues to monitor air quality across the country as authorities and residents address the causes and impacts of the pollution.