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The size distribution and stability of soil aggregates have a major influence on the wind erodibility or soils. From field and laboratory studies, we know that aggregale status IS the result oi'external forces actlng on the soil such as tillage. wetting and drying,'freezing and thawing, and freeze drying. The effect of these forces varies with soil properties, cropping manayement, and the severity 01'thc processes. As a result of these forces, soil aggregates may either increase or decrease in size as well as slability. The effects of moisture and temperature can caw significant changes in the aggregates and thus, the erodibility of a soil. In 0'1-der to relate the forces actlng on soils to different properties and to wind eroditlility. standardized methods are needed to measure the aggregate size distribution and aggregate stability. Standardizing these methods would allow comparison of the effects of various treatments and soil types on the aggregate status. This paper reviews the processes and measurement of soil aggregation as it affects wind erosion.