This article engages with air from a posthuman performative perspective to prompt new thinking about postcolonial Hong Kong. Drawing from a small experiential study of Hong Kong air, this article shows how three becoming-with research practices; sensing air, tracing childhood memories, and cominglings were enacted to engage with data differently. Becoming-with Hong Kong air illuminates how new connections are made with data through inter- and intra-actions between human, nonhuman, and the material and discursive. This article argues that becoming-with practices are productive and necessary to rethink postcoloniality in Hong Kong.