摘要：Air pollution has become one of the important concerns of environmental pollution in the Beijing–Tianjin–Hebei region. As an important city in Beijing–Tianjin–Hebei, Shijiazhuang has long been ranked in the bottom ten in terms of air quality in the country. In order to effectively grasp the influencing factors and current distribution of air pollution in Shijiazhuang City, this paper collects data on the top air pollutants in Shijiazhuang from 2017 to 2019, analyzes the characteristics of time changes in the region, and uses the Kriging interpolation method to affect the air pollutants in this area. The spatial distribution characteristics are studied. The results show (1) From 2017 to 2019, the environmental quality of Shijiazhuang City showed a decreasing trend except for O<sub>3</sub>. (2) Seasonal changes show that NO<sub>2</sub>, PM<sub>2.5</sub>, and CO show as winter > autumn > spring > summer, PM<sub>10</sub>, SO<sub>2</sub> show as winter > spring > autumn > summer, and O<sub>3</sub> concentration changes as summer > spring > autumn > winter. (3) The daily change trends of NO<sub>2</sub>, SO<sub>2</sub>, PM<sub>10</sub> and PM<sub>2.5</sub> are similar, while the change trends of O<sub>3</sub> and NO<sub>2</sub> are opposite. (4) The correlations between air quality index (AQI) and concentrations suggest that PM<sub>10</sub>, PM<sub>2.5</sub>, and CO contribute the most to undesirable pollution levels in this area, while NO<sub>2</sub>, SO<sub>2</sub>, and O<sub>3</sub> contribute less to undesirable pollution. We have concluded that the particulate pollution in Shijiazhuang City has been effectively controlled, thanks to the relevant measures introduced by the government, but the O<sub>3</sub>-based compound pollution is gradually increasing, so particulate pollution and O<sub>3</sub> pollution need to be treated together. The research results of this article have important practical significance for urban or regional air environment monitoring and prevention.
