Port Klang recorded a very unhealthy Air Pollutant Index (API) reading at 203 as at 1pm Wednesday, while 12 other areas continue to record unhealthy API readings, according to the website of the Department of Environment (DoE).

The 12 areas with unhealthy air quality were Bukit Rambai with API reading of 113, Nilai (162), Port Dickson (113), Seremban (129), Tanjung Malim (113), Banting and Kuala Selangor (162), Petaling Jaya (135), Shah Alam (132), Batu Muda (135), Cheras (123) and Putrajaya (145).

The air quality in two other areas also reaching the unhealthy level, namely Bandaraya Melaka (99) and Sri Aman (96).

API readings of between 0-50 are considered good, moderate (51-100), unhealthy (101-200), very unhealthy (201-300) and dangerous (exceeding 301).

Members of the public can check the API status in their areas by surfing the portal at http://apims.doe.gov.my.