ABSTRACT Adverse health and economic impacts of air pollution in China have been well documented, but few studies have examined how air pollution may affect people’s political trust in their government. From an expectation-performance perspective, we argue that air pollution makes Chinese citizens feel that their basic needs and well-being are under-protected by the government, thereby dampening their political trust. Empirically, we employ a unique dataset (n=3,972) that merges national public opinion survey with satellite-derived ground-level air pollution data to test our argument. Our analyses show that worsening air pollution significantly taints Chinese people’s trust in the government, while the absolute level of local air pollution also erodes their political trust through raised environmental concern and lowered policy satisfaction. Our research adds knowledge to the links from air pollution to people’s political trust in China and sheds new light on future studies of environmental politics and governance elsewhere.