Air quality has been demonstrated to be an important determinant influencing tourist decision making. In this paper, we investigate the effect of air quality in the place of origin on a resident’s tourism consumption and the moderating effect of household income on this relationship. We develop a conceptual framework to rationalize the effect and empirically examine it at the household level using China Labor-force Dynamics Survey data from 2016. The results show that poor ambient air quality increases tourism consumption. Furthermore, this relationship becomes stronger for the higher-income group: One standard deviation increase in the Air Quality Index would increase tourism expenditure as much as a 22.56% increase in family income. The methods of instrumental variable and functional-coefficient regression were employed for robustness analysis. These findings contribute to the literature by providing a new perspective for tourism demand studies and direct implications for tourism management and policy making.