People look out from the Singapore Flyer Observation Wheel in the backdrop of the Gardens by the Bay shrouded by haze in Singapore October 5, 2015. The 3-hour haze Pollutant Standards Index (PSI) reached a high of 186 at 1600 SGT (0800 GMT) on Monday, according to the National Environment Agency. Slash-and-burn agriculture in neighboring Indonesia has blanketed Singapore in a choking haze for weeks. REUTERS/Edgar Su