黄沙（即黄尘、亚洲粉尘、黄河风或中国沙尘暴）是一种季节性的气象现象，它会于东亚冬春交际时零星地出现。沙尘起源于蒙古沙漠、中国北部和哈萨克斯坦斯坦，而表面高速的风及激烈的尘暴可引起云雾及极小量的干旱泥土。之后这些尘埃经由冬季季风向东吹，并飘过了中国、朝鲜和韩国及日本以及部分俄罗斯远东地区。有些时候，飘尘的情况加剧，在浓度相当高的时候会影响空气质量，甚至飘洋过海影响了更东方的地区，如美国。

在过去的十多年间，由于工业污染物（原先并不构成威胁）与中国的荒漠化，已使沙尘暴成为一个严重的环境问题。在过去数十年间，哈萨克斯坦咸海地区80%的海面已经消失，前苏联的一项农业计划因此失败。

Asian Dust (also yellow dust, yellow sand, yellow wind or China dust storms) is a seasonal meteorological phenomenon which affects much of East Asia sporadically during the months of spring. The dust originates in the deserts of Mongolia, northern China and Kazakhstan where high-speed surface winds and intense dust storms kick up dense clouds of fine, dry soil particles. These clouds are then carried eastward by prevailing winds and pass over China, North and South Korea, and Japan, as well as parts of the Russian Far East. Sometimes, the airborne particulates are carried much further, in significant concentrations which affect air quality as far east as the United States.