Malaysia has also been affected by the recurring haze problem, which occurs in the dry season as a result of forest fires in the sprawling Indonesian archipelago, some of them deliberately started to clear land for cultivation.
Haze reached unhealthy levels in Malaysia over the weekend.
On Monday, the Malaysian pollutant index showed unhealthy levels of between 102 and 121 in parts of the states of Pahang, Terengganu and Malacca.
In the capital Kuala Lumpur, the sky remained hazy with a reading of 82.
Southeast Asia's haze problem hit its worst level in 1997-1998, causing widespread health problems and costing the regional economy billions of dollars as a result of business and air transport disruptions.
-AAP