Port Klang recorded a very unhealthy Air Pollutant Index (API) reading on Thursday, according to the Department of Environment (DOE).
As of 5 pm, the API registered 233.
13 other areas recorded an unhealthy air quality.
Among them Banting 189, followed by Kuala Selangor 179.
Whileb te readings at Putrajaya is 168. Batu, Kuala Lumpur -163 and Petaling Jaya - 159.
The API reading in several districts in Negri Sembilan also deteriorated to unhealthy levels due to a combination of factors including the prolonged dry spell and fires.
API readings of between 0-50 are considered good, moderate (51-100), unhealthy (101-200), very unhealthy (201-300) and dangerous (exceeding 301).
Meanwhile Kinitv random survey at the Kuala Lumpur International airport KLIA shows that it was covered with thick haze and limited visibility.
