Abstract: Rapid urbanization significantly modifies the urban morphology, leading to unfavorable wind environment at pedestrian level in neighborhoods.This study utilized a method based on exceeding probability and computational fluid dynamics (CFD) modeling to establish a general way and process on quantitative assessment of wind environment in neighborhoods.A case study was carried out in Chongqing Longfo neighborhoods on aspects of both frequent events and occasional events.The results show that the wind environment exhibits a dramatic regional difference due to complex underlying surfaces.The winds at open spaces, streets parallel to background wind directions and certain regions around tall buildings tend to be stronger than that in densely-built regions and the inner spaces of closed residential estate.The quality of wind environment of the former is graded as level 1b, and the quality of the latter is graded as level 1a.In general, the urban surface can act as frictional force which reduces the overall wind speed in the neighborhoods and further results in a favorable wind environment.These results could aid to promote fine service of urban weather and climate forecasting at neighborhood's scale, and enhance the ability of disaster prevention and reduction on urban meteorology.