This Technical Report adopts ISO/TR 19167:2019, which facilitates an understanding of the ubiquitous public access context information model, as defined in AS ISO 19154, to establish a UPA-to-geographic information environment. It illustrates how the UPA context information model is designed and implemented to provide an air quality information service from a geographic information system-based air quality information system. KEYWORDS: Ubiquitous public access; Geographic information; Air quality
