A transportation officer wears a mask due to air pollution in Jakarta, capital of Indonesia, Aug. 2, 2019. (Xinhua/Agung Kuncahya B.)

A mist of fumes, dust and smoke blankets the skyline of Jakarta, capital of Indonesia, Aug. 2, 2019. (Xinhua/Agung Kuncahya B.)

A woman wears a mask due to air pollution on street in Jakarta, capital of Indonesia, Aug. 2, 2019. (Xinhua/Agung Kuncahya B.)

A mist of fumes, dust and smoke blankets the skyline of Jakarta, capital of Indonesia, Aug. 2, 2019. (Xinhua/Agung Kuncahya B.)