PETALING JAYA: Seven areas recorded very unhealthy Air Pollutant Index (API) readings with Shah Alam being the highest at 299.
As of 8am Sunday, the haze situation worsened in six other areas.
Very unhealthy readings were recorded in Batu Muda (278), Petaling Jaya (250), Banting (244), Port Klang (234), Putrajaya (231) and Seremban (202), according to the Department of Environment’s website.
Twenty-four areas had unhealthy API readings including Nilai (198), Port Dickson (191), Cheras (182), Bukit Rambai (179), Bandaraya Melaka (174) and SK Jalan Pegoh (171).
Other areas include Kuala Selangor (167), Seberang Jaya 2 (162), USM (159), Jalan Tasek (153) and Muar (146).
Moderate readings were recorded in Langkawi (98), Tanjung Malim (94), Kangar (83), Kuching (80) and both Kota Baru and Tanah Merah (77).
The haze, which has affected the country for more than a month, was due to the open burnings in Indonesia's Sumatra and Kalimantan.
It had also forced closure of schools with flights cancelled. The annual Standard Chartered KL Marathon was also called off.
API readings of between 0 and 50 indicate good air quality; 51 and 100 (moderate) 101 and 200 (unhealthy), 201 and 300 (very unhealthy) and over 301 (hazardous).