Indonesian Muslims pray for rain during a long drought season and haze in Pekanbaru, Riau province, Indonesia, September 11, 2019. Thousands of Indonesians prayed for rain in haze-hit towns on the islands of Sumatra and Borneo on Wednesday, as forest fires raged at the height of the dry season, the state Antara news agency reported. Antara Foto/Rony Muharrman/ via REUTERS

A woman walks along the road covered in smog due to the forest fire in Banjarbaru, South Kalimantan province, Indonesia, September 6, 2019. Picture taken September 6, 2019. Fires have burnt through parts of Sumatra and Borneo island for more than a month and the government has sent 9,000 military, police and disaster agency personnel to fight the flames. Antara Foto/Bayu Pratama S via REUTERS

A mosque and a church are pictured as smog covers the city due to the forest fire in Pekanbaru, Riau province, Indonesia, September 10, 2019. Picture taken September 10, 2019. Indonesia's neighbours regularly complain about smog caused by its forest blazes, which are often started to clear land for palm oil and pulp plantations. Antara Foto/FB Anggoro via REUTERS

People use wooden boats to cross a river covered in smog due to the forest fire in Pekanbaru, Riau province, Indonesia, September 9, 2019. Picture taken September 9, 2019. But Indonesia said this week it was not to blame and fires had been spotted by satellites in several neighbouring countries. Antara Foto/Rony Muharrman via REUTERS

Indonesian Muslim women pray for rain during a long drought season and haze in Pekanbaru, Riau province, Indonesia, September 11, 2019. Several parts of Southeast Asia have seen unusually dry conditions in recent months including Indonesia, which has seen very little rain because of an El Nino weather pattern, its meteorological department has said. Some communities have taken to prayer in the hope of ending the dry weather, and the haze it brings. Antara Foto/Rony Muharrman/ via REUTERS

Indonesian Muslims gather as they pray for rain during a long drought season and haze in Pekanbaru, Riau province, Indonesia, September 11, 2019. Thousands of people in Pekanbaru, capital of Riau province in Sumatra, held Islamic prayers for rain outside the governor's office. Many of those taking part wore face masks to protect themselves from the smoke, Antara reported. Antara Foto/Rony Muharrman/ via REUTERS