Reuters: Singapore's air quality deteriorated to "hazardous" levels on Thursday as smoke from forest fires in Indonesia obscured skies over the wealthy city-state and parts of Malaysia and disrupted some businesses and travel.
In Singapore, air traffic controllers gave more time for aircraft between taking off and landing at Changi Airport, a major aviation hub, because of poor visibility.
Work at several Singapore construction sites slowed with few workers seen outdoors and fast-food operator McDonald's...