Nearly 10,000 lantern-toting people walked 1.6km at the Singapore Sports Hub on Saturday to raise funds for the Association for Persons with Special Needs (APSN) and to try to break the Guinness World Record for the largest lantern parade. However, the haze affected the turnout, and the record - held by 10,568 participants in a Land Transport Authority event on Sept 14, 2008 - could not be broken, APSN said. But its event may set a new Guinness World Record for the most people carrying lanterns made by persons with mild intellectual disabilities. Officials are determining the exact number for the record. When the walk started at 6pm on Saturday, the 24-hour Pollutant Standards Index (PSI) was between 120 and 148, in the unhealthy range (101 to 200). The conditions improved yesterday, with less haze from Indonesia and showers in Singapore. As at 9pm yesterday, the 24-hour PSI was between 74 and 90, in the moderate range (51 to 100).