Introduction: The aim of this study was to spatial analysis of PM₁₀ concentrations in the ambient air of Yazd in two seasons, and the zoning by using Kriging interpolation method. Finally, different factors affecting the concentrations of PM₁₀ are marked and standards have been investigated

Material and methods: The measurement of PM₁₀ particulates was performed by the monitoring device HAZ-DUST EPAM 5000. 13 sampling stations were identified in various areas of the city in order to take samples of particulate matter PM₁₀ in winter and spring 2013. Eventually Arc GIS software and kriging interpolation method and spatial autocorrelation were used to PM₁₀ spatial distribution.

Results: The seasonal spring average for PM₁₀ (155μg/m³) was more than winter (27.87μg/m³). At 11 stations from 13 stations PM₁₀ concentrations were higher than the WHO standards in winter. Seasonal average of PM₁₀ concentrations in spring were exceeding of WHO standards in all stations.  Particulate matter levels were higher in High-traffic and old areas than the other regions. RMSE index was 45.493 and 56.525 for winter and spring, respectively.

Conclusion: PM₁₀ concentration had the random spatial pattern in two seasons. This study revealed traffic and historical places affecting the concentration of PM₁₀.