KUALA LUMPUR: Nilai, Negri Sembilan, recorded the country's highest Air Pollutant Index (API) reading of 159 at 5pm today, with 17 monitoring stations reporting unhealthy air quality and 49 recording moderate levels.

The Department of Environment's Air Pollutant Index Management System (Apims) showed Batu Muda in Kuala Lumpur, Klang in Selangor and Seremban in Negri Sembilan recording readings of 157 each.

Johan Setia in Selangor recorded an API reading of 156, followed by Bandaraya Melaka at 154.

In Johor, Batu Pahat and Tangkak recorded readings of 153 each, while Petaling Jaya registered 152.