Air Pollution Hits Record Levels in Singapore – Yahoo! News


Wall Street Journal (blog)
Air Pollution Hits Record Levels in Singapore
Yahoo! News
At 12:00 p.m. local time (04:00 GMT) Friday (June 21), the Pollution Standards Index — a scale of 0 to 500 to measure air pollution — hit 401 in Singapore, the highest in the country's history. Before this week, the record had been 226, set in 1997
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