The Pollutant Standards Index (PSI) hit an all-time high of 321 at 10pm on Wednesday, crossing into the "hazardous" range, according to data from the National Environment Agency (NEA).
- Singapore in smog alarm as Indonesia forest fires rageAFP News - 3 hours ago
- Haze in Singapore reaches all-time record high at 321 PSIYahoo! Newsroom - Mon, Jun 17, 2013
- Singapore in smog alarm as Indonesia forest fires rageAFP News - 1 hour 56 minutes ago
- Singapore pressures Indonesia to identify firms behind hazeReuters - Tue, Jun 18, 2013
- Singapore, Indonesia tussle over haze problemAFP News - Tue, Jun 18, 2013
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