According to the air pollutant index management system (Apims) website, the highest API reading at 155 was in Larkin, Johor.

Also recording API readings above 150 were Nilai, Negeri Sembilan, and Bukit Rambai, Melaka, with both readings at 152.

Port Dickson recorded a reading of 151.

Unhealthy API readings were also reported in Cheras here at 144, Batu Pahat, Johor (133), Seberang Jaya, Penang (130), Banting, Selangor (122) and Melaka city (121).

Johor hospitals ready for more patients

All public hospitals in Johor are prepared to receive additional patients because of recent high air pollution from the haze, said state executive councillor Ling Tian Soon.

He said the state health department had advised the public to refrain from carrying out outdoor activities and to drink a lot of water. Those with breathing problems were encouraged to wear face masks, he said after a survey of the Larkin district.

Fellow executive councillor K Raven Kumar said discussions would be held with the state education department on measures to be taken in view of the unhealthy air quality.

Schools may be closed if the API reading exceeds the 200 mark, while all activities outside the classroom must be stopped when the reading goes above 100.