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Urganch, situated in the Xorazm Region of Uzbekistan at coordinates 41.5500°N, 60.6333°E, occupies a crucial position in the Amu Darya River delta. The city’s landscape is predominantly flat, characteristic of the extensive alluvial plains formed by centuries of river deposition. Elevation is low, averaging around 80 meters above sea level, contributing to limited atmospheric dispersion of pollutants. Urganch is surrounded by intensely cultivated agricultural lands, primarily cotton fields, a legacy of the Soviet era. This agricultural dominance significantly impacts air quality through dust storms, pesticide drift, and the burning of agricultural residue. The Amu Darya River, while a vital water source, also contributes to humidity and potential for localised fog formation, trapping pollutants. The urban-rural gradient is relatively sharp; the city itself is a concentrated hub, contrasting with the surrounding agricultural expanse. Industrial activity, though not as dominant as agriculture, is present in and around Urganch, adding to the pollution burden. The city’s location within a continental climate zone, far from moderating oceanic influences, exacerbates temperature extremes and influences wind patterns, affecting pollutant concentration and dispersal. The regional dust transport from the Kyzylkum Desert also plays a role, particularly during spring.

Urganch experiences a distinct continental climate, profoundly influencing its air quality throughout the year. Spring (March-May) sees a surge in particulate matter due to dust storms originating from the surrounding deserts and agricultural activities like field preparation and burning of crop residue. Winds are often strong, exacerbating dust dispersal. Summer (June-August) brings intense heat and stable atmospheric conditions, leading to temperature inversions that trap pollutants near the ground, particularly from vehicle emissions and localised industrial sources. August is typically the least favourable month for outdoor activity for those with respiratory sensitivities. Autumn (September-November) offers a brief respite with cooler temperatures and increased precipitation, helping to wash away pollutants. However, the burning of agricultural waste after the cotton harvest can create localised spikes in particulate matter. Winter (December-February) is characterised by cold temperatures and infrequent precipitation. Heating using coal and wood in residential areas contributes to increased levels of smoke and particulate matter. Fog is common, further reducing visibility and trapping pollutants. Sensitive groups, including children and the elderly, should limit outdoor exposure during these periods. Overall, avoiding outdoor exertion during peak agricultural burning and winter heating seasons is advisable.