Serian records Malaysia’s highest API reading as haze hits Sarawak and Johor

SARAWAK and Johor accounted for nine of the 14 locations recording unhealthy air quality this morning, with Serian registering the country's highest air pollution index (API) reading at 191 as haze continued to affect parts of Malaysia.

According to the latest data from the Malaysian Air Pollutant Index Management System (APIMS), Sarawak recorded three of the highest readings, with Kuching at 186 and Samarahan at 182, alongside Serian.

In Johor, Batu Pahat and Pasir Gudang both recorded API readings of 159, followed by Kluang (157), Larkin (154), Kota Tinggi (153) and Tangkak (113).

Negeri Sembilan recorded two unhealthy readings, with Seremban at 155 and Nilai at 154.

No locations in the Klang Valley recorded unhealthy air quality as of 7am.

Meanwhile, 43 locations recorded moderate air quality, while 11 registered good readings.

Under the API classification, readings of zero to 50 indicate good air quality, 51 to 100 moderate, 101 to 200 unhealthy, 201 to 300 very unhealthy, and above 300 hazardous. - October 25, 2026