A traffic policeman signals to drivers during a smoggy day in Harbin, Heilongjiang Province. The second day of heavy smog forced the closure of schools and highways on Monday, according to Xinhua News Agency.
A teacher helps her student put on a face mask at a school in Putrajaya, outside Kuala Lumpur, on Wednesday. The Malaysian capital remains shrouded in haze, as the environmental crisis continues after a week of thick hazardous smog covered the country and its neighbour Singapore
Lai Seng Sin/AP
A motoristcyclist wearing a face mask rides across a bridge covered by light haze in Klang, outside Kuala Lumpur, Malaysia, on Tuesday. Indonesian president Susilo Bambang Yudhoyono apologised on Monday to Singapore and Malaysia for record-setting pollution caused by forest fires in his country.
Children cover their noses near burnt land in Marpoyan Damai sub district, in the outskirts of Pekanbaru, in Indonesia’s Riau province. Haze from fires in Indonesia blanketing Singapore could persist for weeks or longer, Singapore Prime Minister Lee Hsien Loong said on Thursday, as the smoke drove air quality to “hazardous” levels and disrupted business and travel in the region.
A junk sails past the city’s skyline shrouded in a dense blanket of toxic smog in Hong Kong on April 15 2013. The air pollution index reached the “severe” level for the third time in 2013 with high concentrations of nitrogen dioxide present.