OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (17): 2405-2411.

• Treatise——Environment and Health • Previous Articles     Next Articles

Changes in air pollutants and their influencing factors in Urumqi from 2020 to 2024

LAN Jing, WEI Xueyu, DONG Chenxi, YAN Qi()   

  1. Xinjiang Medical UniversityUrumqiXinjiang 830017, China
  • Received:2025-11-21 Revised:2026-01-19 Online:2026-09-01 Published:2026-08-14
  • Contact: YAN Qi E-mail:ggwsyq@xjmu.edu.cn

Abstract:

Objective To investigate the status of air pollution in Urumqi from 2020 to 2024,clarify the variation patterns of air pollutants and their key meteorological driving factors,and provide a scientific basis for air pollution control in Urumqi. Methods Data on the concentrations of major air pollutants such as sulfur dioxide(SO2),nitrogen dioxide(NO2),inhalable particulate matter(PM10),fine particulate matter(PM2.5),carbon monoxide(CO),ozone(O3),and changes in meteorological factors(temperature,humidity,air pressure,wind speed) in Urumqi from 2020 to 2024 were collected and statistically analyzed. Results From 2020 to 2024,the annual median concentrations of the major atmospheric pollutants in Urumqi were in the ranges of 18.00-26.00 μg/m3 for PM2.5,47.00-66.00 μg/m3 for PM10,0.40-0.70 mg/m3 for CO,5.00-8.00 μg/m3 for SO2,25.00-34.00 μg/m3 for NO2,and 85.50-95.00 μg/m3 for O3,showing an overall downward trend. These pollutants exhibited significant seasonal variations,with higher concentrations in winter and spring and lower concentrations in summer and autumn. PM2.5,PM10,CO and NO2 showed significant positive correlations with air pressure and humidity(all P<0.01),but significant negative correlations with atmospheric temperature and wind speed(all P<0.01). By contrast,SO2 and O3 presented significant positive correlations with atmospheric temperature and wind speed(all P<0.01),while showing significant negative correlations with air pressure and humidity(all P<0.01). Conclusion The air pollution situation in Urumqi improved significantly from 2020 to 2024,with the concentrations of major atmospheric pollutants showing an overall downward trend. There are significant correlations between the main pollutants and meteorological factors in Urumqi,and the research results can be used as a reference for formulating meteorological factor-based policies for air pollution control.

Key words: Atmospheric pollutants, Atmospheric environment, Meteorological factors, Air quality, Temporal and spatial variations, Influencing factors

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