The Department National Weather Centre senior meteorologist Dr. Hisham Mohd Anip cleared all rumours concerning the hazy air in certain areas of Kuala Lumpur. He stated that the haze has nothing to do with forest fires or hot spots from neighbouring countries and it is highly unlikely for a full blown haze to occur anytime soon.
The hazy conditions is said to be caused by the ongoing dry spell and lack of strong winds. He also established that there is nothing to be worried about as the atmospheric state should improve by Sunday. Do try to stay indoors to avoid being exposed to unhealthy air!
[Source]