This chapter explores the integration of Natural Language Processing (NLP) with Extended Reality (XR) technologies, encompassing Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR), to enhance environmental communication. As XR platforms evolve, effective user interactions within these immersive environments become crucial, particularly for interpreting environmental data and scenarios. By leveraging NLP techniques like language understanding, generation, and sentiment analysis, the chapter highlights how these tools can improve user engagement, real-time data interpretation, and interactive simulations in environmental contexts. Case studies demonstrate the potential of NLP-powered interfaces to create more intuitive and natural interactions. The chapter also examines technical and ethical considerations, such as data privacy and language diversity, and proposes a framework for future research, emphasizing interdisciplinary collaboration and user-centered design to maximize the impact of NLP in XR-based environmental communication.