Beijing officials declared the Paralympics a success yesterday.
They also said tight security checks and traffic controls would be in place today for the Games' closing ceremony.
But city traffic authorities ruled out an extension of traffic restrictions, despite their popularity with environmentalists.
'The Beijing Paralympics received wide praise and applause from both within the country and abroad, and Beijing has fulfilled its promise to the world [to host an excellent Paralympics],' spokesman Liu Zhi said.
'The air quality has been good since the start of the Paralympics, and major pollutants in the air have dropped almost 60 per cent [compared with the same time last year].'
Mr Liu said all food and drinking water supplied for the event had been monitored along the supply pipeline and no contamination had been reported in the past two weeks.