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Eski Arab, nestled within the Farg‘ona Region of Uzbekistan, occupies a geographically significant position at approximately 40.3686° N, 71.4231° E. The city’s location within the Fergana Valley, a fertile intermontane basin, dictates much of its character. This valley, bordered by the Tian Shan mountain range to the north and east, and the Gissar-Alay mountain system to the south, creates a unique microclimate and influences air circulation patterns. Eski Arab itself sits at an elevation of roughly 420 meters (1,378 feet), contributing to a relatively moderate climate, but also potentially trapping pollutants under certain atmospheric conditions. The surrounding landscape is predominantly agricultural, with extensive fields of cotton and other crops dominating the rural areas immediately adjacent to the city. This agricultural activity, while vital to the regional economy, can contribute to particulate matter pollution, particularly during planting and harvesting seasons. Further afield, industrial zones within the Farg‘ona Region, including textile and food processing facilities, represent potential sources of air pollution that can be transported to Eski Arab. The urban–rural gradient is relatively sharp, with the city transitioning quickly into agricultural land. The valley’s topography, with its enclosed nature, can limit the dispersion of pollutants, especially during periods of calm winds or temperature inversions. The absence of major nearby water bodies further reduces natural air purification mechanisms, making the valley susceptible to localized air quality challenges.

Eski Arab’s air quality experiences a distinct seasonal cycle heavily influenced by regional weather patterns. Spring (March-May) often sees a gradual improvement as temperatures rise and winds increase, dispersing accumulated winter pollutants. However, agricultural activities, including fertilizer application and initial field preparation, can introduce localized spikes in particulate matter. Summer (June-August) is typically the most challenging period. High temperatures contribute to stagnant air conditions, and the valley’s topography can exacerbate temperature inversions, trapping pollutants close to the ground. Dust storms originating from the surrounding arid regions can also impact air quality. Autumn (September-November) brings a period of relative improvement as winds strengthen and temperatures begin to cool, though agricultural burning practices can temporarily degrade air quality. Winter (December-February) is often characterized by cold, calm conditions and frequent fog, which significantly reduces air dispersion and leads to a build-up of pollutants. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during summer and winter months, limiting outdoor exertion and monitoring for respiratory irritation. During periods of agricultural activity, wearing masks can help reduce exposure to particulate matter. The combination of valley geography, agricultural practices, and seasonal meteorological shifts creates a complex interplay that shapes Eski Arab’s air quality throughout the year. Avoiding strenuous outdoor activity during periods of fog or stagnant air is advisable.