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Singapore’s Air Quality Hits Unhealthy Range as Haze Returns

Singapore’s air quality reached the unhealthy level this morning, one month after the government passed its first transboundary haze bill.

Singapore’s three-hour Pollutant Standards Index was as high as 113 at 6 a.m., before retreating to 91 at 9 a.m., the National Environment Agency, or NEA, said on its website. The 24-hour Pollutant Standards Index was at 78 to 105 as the government agency reported “hotspots” across Indonesia, with the highest pollutant levels recorded on the island’s western region. A reading of 101 to 200 is deemed “unhealthy.