SINGAPORE, Aug. 26 (UPI) -- Singapore's air quality entered the unhealthy category Friday, with Indonesian forest fires causing a smoky haze over the city.
A three-hour Pollutants Standards Index measured by Singapore's National Environment Agency (NEA) peaked at 215, with a reading of 200 regarded as "very unhealthy," before dropping Friday evening. The haze, however, is expected to remain, and will remain a health hazard for at least the next 24 hours.