Children swim in a hotel pool as haze from forest fires fills the air above Palangkaraya city in Central Kalimantan, Indonesia, on September 15, 2019. #

Fire burns peatland and forest inside Sebangau National Park on September 14, 2019, on the outskirts of Palangkaraya, Central Kalimantan, Indonesia. #

A firefighter reacts as work continues to extinguish the fire on peatland and fields in Pulang Pisau regency, Central Kalimantan, on September 13, 2019. #

Haze covers the Kahayan river due to a forest fire in Palangka Raya, Central Kalimantan province, on September 14, 2019. #

Borneo orangutans are seen on Salat Island as haze from forest fires blankets the area at Marang, Central Kalimantan, on September 15, 2019. #

Fire burns peatland and fields on September 13, 2019, in Pulang Pisau regency. #

Fields and houses burn on September 13, 2019, in Pulang Pisau regency. #

A firefighter works to extinguish a fire in a forest at Rambutan village, in Ogan Ilir, South Sumatra province, on September 11 , 2019. #

A man distributes masks to motorcyclists as haze from forest fires blankets the area in Palangkaraya city on September 14, 2019. #

Indonesian children rest at a clinic used as a temporary shelter, after they fled their homes due to the haze in Pekanbaru on September 14, 2019. #

A woman walks along a road covered in smoke due to the forest fire in Banjarbaru, South Kalimantan province, Indonesia, on September 6, 2019. #

A villager wearing a superhero costume tries to extinguish burning peatland in Riau, Indonesia, on September 12, 2019. #

Firefighters prepare to extinguish a fire on peatland and fields on September 13, 2019, in Pulang Pisau regency, Central Kalimantan, Indonesia. #

A fire burns on land next to a residential area in Pekanbaru, Riau province, on September 13, 2019. #

An aerial view of burning peatland and trees during a fire patrol on September 14, 2019, in Central Kalimantan, Indonesia #

Indonesian firefighters spray water to help extinguish a fire in Kampar on September 16, 2019. #

The Kuala Lumpur skyline, including the Petronas Twin Towers, is seen shrouded in haze on September 11, 2019. #

Vehicles are seen on a highway in the thick haze that surrounds Pekanbaru city, Riau province, Indonesia, on September 13, 2019. #

A masked child walks near a road as smoke and haze fill the air over Pekanbaru, Riau, Indonesia, on September 15, 2019. #