Air Pollution in Taiyuan City During 2022 to 2024: Status and Influence of Meteorological Factors

The deterioration of environmental air quality is an urgent global issue, and the level of air pollution is particularly severe in developing countries. This study aims to understand the air quality problems in Taiyuan City and explore the evolution of air pollution trends and their relationship with meteorological factors. The result shows that the air quality in Taiyuan has distinct temporal distribution characteristics, with summer being better than winter. Wind speed has an impact on air quality and is closely related to the season. The increase in wind speed in spring is conducive to a reduction in NO2 concentrations, but it leads to an increase in PM10 concentration. In summer, wind speed is negatively correlated with CO and positively correlated with O3. In autumn, except for O3, wind speed is negatively correlated with various air pollutants. During winter, wind speed has a favorable effect on most atmospheric pollutants, except for O3 and PM10. When temperatures soar, it is necessary to be vigilant about the possibility of O3 concentration exceeding standards in summer. But, in winter, an increase in temperature often leads to an increase in PM2.5 and PM10 concentrations. An increase in humidity is very beneficial in spring, helping to lower the concentration of PM10, but in winter it can lead to an increase in the concentrations of both PM2.5 and PM10. Precipitation can improve air quality, especially when it exceeds 3 mm. These findings suggest that pollutant control strategies may need to be adjusted according to the season, especially for particulate matter.