This study discusses an innovative green infrastructure model as a pilot project in the aerotropolis area of Yogyakarta International Airport (YIA), Indonesia. This study offers an optimal solution that combines environmental sustainability and improving the quality of life in the area around the airport while setting a new standard for the development of similar areas. This study aims to create a simulation model for green infrastructure that can be applied in many urban areas. This method involves comparing microclimate variations under three scenarios: 1) a map representing the existing conditions, 2) a masterplan map proposed by the Provincial Government of Yogyakarta, and 3) an aerotropolis map proposed by the Researcher. The simulation method uses ENVI-met 5.6.1 software to predict real conditions objectively. The results of this study reveal that the optimization of green infrastructure in the aerotropolis of YIA is most effective on the Provincial Government Map, followed by the Researcher's Proposed Map. The combination of both maps offered a superior solution for dynamic and sustainable urban design. This study presents a green infrastructure simulation model based on ENVI-met 5.6.1 that has the potential to be applied in various urban areas and creates great opportunities for the development of a more balanced and sustainable environment.