Tourists visit a look-out point while the Singapore city skyline is seen partially covered in haze in the background, Tuesday, June 18, 2013 in Singapore. The Pollutant Standards Index, Singapore’s ... more 
Tourists visit a look-out point while the Singapore city skyline is seen partially covered in haze in the background, Tuesday, June 18, 2013 in Singapore. The Pollutant Standards Index, Singapore’s main measure to determine air quality, crept into the “unhealthy” classification Monday as smoke from roaring blazes on Indonesia’s Sumatra island drifted across the sea and cast a gray pall over the city-state’s skyscrapers. (AP Photo/Wong Maye-E) less 
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Associated Press | Photo By Wong Maye-E
Tue, Jun 18, 2013 10:18 PM EDT