Haze blanketing parts of Kuala Lumpur in this Oct 18 file photo. (Bernama pic)PETALING JAYA: Sixteen areas nationwide recorded unhealthy air pollutant index (API) readings as of 11am, with Johan Setia in Selangor reporting the highest reading of 159.

According to the environment department’s Air Pollutant Index Management System portal, Klang in Selangor and Seremban in Negeri Sembilan recorded the second-highest readings of 158 each, followed by Batu Muda in Kuala Lumpur and Nilai in Negeri Sembilan at 157 each.

Selangor recorded the highest number of areas with unhealthy API readings at five, followed by Melaka with three.

Negeri Sembilan, Kuala Lumpur and Johor recorded two areas each, while Putrajaya and Sarawak recorded one each.