Six areas of the IPU's records are unhealthy as of 9 a.m.

KUALA LUMPUR, Sept. 27: Six areas recorded air pollution index (IPU) readings at unhealthy levels as of 9am this morning.

According to the Air Pollution Index Management System (APIMS) data, four areas in Johor recorded the highest readings namely High City (165), Warehouse Sand (163), Pengerang (162) and Larkin (156).

In Sarawak, IPD Serian recorded 152 readings, while Sri Aman (128).

A total of 52 regions recorded moderate readings, while nine regions recorded good readings.

IPU readings between 0 and 50 are categorized as good, 51 to 100 moderate, 101 to 200 unhealthy, 201 to 300 very unhealthy, while 301 up is dangerous. - TVS