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SINGAPORE - The haze has worsened on Thursday (Sept 10), with the three-hour Pollutants Standard Index (PSI) at 5pm hitting 147, the highest so far this year.
The three-hour readings breached 100 at 2am and have been going up since, according to the National Environment Agency's (NEA) website.
The PSI readings on Wednesday were markedly lower, with hourly readings across Singapore staying within the moderate level of 50 to 100.