The Tibetan Plateau lacks ground-level O₃ observation due to its unique geographical environment. It is imperative to employ modelling methods to simulate the O₃ level. The present study proposed a novel technique for estimating the surface O₃ level in remote regions. The result captured long-term O₃ concentration on the Tibetan Plateau, which was beneficial for assessing the effects of O₃ on climate change and ecosystem safety, especially in a vulnerable area of the ecological environment.