[Objective]The study aimed to discuss the effects of dust weather on air quality in Lanzhou City.[Method]Under the influence of a strong sandstorm during March 8-15,2013 on air quality in Gansu Province,the changes of wind speed,atmospheric visibility and PM_(10)concentration as well as air pollution in Lanzhou were analyzed.[Result]The dust weather during March 8-15,2013 affected Lanzhou City for the longest time in recent 10 years,and the city suffered medium pollution on March 8 and heavy pollution during March 9-15 under the influence of the dust weather,while PM_(10)was the primary pollutant.[Conclusion]The research could provide the corresponding technical support for the prevention and control of environmental pollution in Lanzhou City.
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