Singapore endured its worst air pollution levels of the year, as monsoon season brought haze from forest fires in neighboring Indonesia.
The city-state's Pollutant Standards Index (PSI) rose by 20 points from Thursday night to Friday morning, ranging between 65-75 -- well above the normal range of 0 to 50, according to Singapore's National Environmental Agency (NEA).
The Singaporean government advised its citizens to avoid outdoor activities and prolonged exertion, attributing the haze to "an increase in hotspot activities observed over Sumatra" in the past week. Full story
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