KUALA LUMPUR: Nineteen areas nationwide recorded unhealthy Air Pollutant Index (API) readings as of 8am today, with Pasir Gudang in Johor recording the highest reading at 180.

Johor was the worst-affected state, with eight areas recording unhealthy readings, according to the Department of Environment's (DoE) Air Pollutant Index Management System.

The other affected areas in Johor were Larkin (176), Kota Tinggi (169), Pengerang (166), Batu Pahat (161), Kluang (154), Tangkak (151) and Segamat (133).

In Sarawak, Sri Aman recorded an API reading of 172, followed by Serian (154) and Samarahan (129).