At 7am, the 24-hour PSI readings ranged from 104 to 140, while hourly the PM2. 5 readings ranged from 44 to 62.
Singapore haze: Air quality unhealthy across country; PM2.5 readings elevated in two regions
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At 7am, the 24-hour PSI readings ranged from 104 to 140, while hourly the PM2. 5 readings ranged from 44 to 62.