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Academic Journal of Environment & Earth Science, 2023, 5(9); doi: 10.25236/AJEE.2023.050907.

Analysis of Air Quality Change Characteristics and Correlation with Meteorological Factors in Yangtze River Delta City Cluster


Hu Chen, Xiaoping Zhang, Wenqiang Yang, Tingting Zhao, Jiayao Li

Corresponding Author:
Xiaoping Zhang

College of Geography and Environmental Science, Northwest Normal University, Lanzhou, China


This study analyzed the changes and correlations of AQI and six basic pollutants (PM2.5, PM10, SO2, N2, CO, O3) in the Yangtze River Delta city cluster from 2016 to 2019 based on air pollutant concentration monitoring data and meteorological factors. The analysis used Kriging interpolation and Pearson correlation methods. The main findings were: (1) The air quality of the study area improved over time; PM2.5, PM10, N2 and CO concentrations were higher in winter; O3 concentration was higher in summer; SO2 concentration was relatively stable across seasons; O3 concentration showed an inverted “U” pattern over time, while the other pollutants showed a “U” pattern. (2) Spatially, AQI was higher in the northwest and lower in the southeast of the study area; PM2.5 and PM10 concentrations had high spatial similarity with AQI. (3) The correlations between each pollutant concentration and meteorological factors varied; precipitation and air temperature had significant correlations with all six pollutants; relative humidity had a more significant correlation with PM10; the other factors had no significant correlations with the pollutants.


AQI; air quality; spatial and temporal distribution; meteorological factors; Yangtze River Delta city cluster

Cite This Paper

Hu Chen, Xiaoping Zhang, Wenqiang Yang, Tingting Zhao, Jiayao Li. Analysis of Air Quality Change Characteristics and Correlation with Meteorological Factors in Yangtze River Delta City Cluster. Academic Journal of Environment & Earth Science (2023) Vol. 5 Issue 9: 51-61. https://doi.org/10.25236/AJEE.2023.050907.


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