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Saatlı, a city nestled in the central plains of Azerbaijan, occupies a geographically significant position within the Saatlı Rayon. Located at coordinates 39.9311° N, 48.3697° E, the city’s terrain is predominantly flat, characteristic of the Kura-Aras Lowland. This lowland, a fertile agricultural region, heavily influences Saatlı’s air quality. The surrounding landscape is dominated by cultivated fields – primarily cotton, grain, and vegetables – interspersed with small settlements. The city’s elevation is relatively low, contributing to potential temperature inversions that can trap pollutants. While not directly adjacent to a major body of water, Saatlı is within reasonable proximity to the Kura River, which plays a role in local humidity and potential for localized fog formation. Saatlı isn’t a major industrial hub, but regional agricultural processing and smaller-scale manufacturing contribute to emissions. The urban-rural gradient is fairly sharp; the city itself is compact, quickly transitioning to open farmland. This proximity to agricultural activity means seasonal burning of crop residue is a key factor impacting air quality. Dust from agricultural practices, particularly during harvest, also contributes to particulate matter concentrations. The prevailing winds, generally from the northwest, can transport pollutants from regional sources towards Saatlı, and the flat terrain offers little resistance to their movement.

Saatlı experiences a semi-arid climate, resulting in distinct seasonal air quality patterns. Spring (March-May) sees a gradual improvement after winter, but agricultural burning begins, increasing particulate matter. Winds can be erratic, sometimes dispersing pollutants, other times concentrating them. Summer (June-August) is typically the clearest period, with higher temperatures and stronger winds aiding dispersion, though ozone formation can become a concern during prolonged heatwaves. However, dry conditions exacerbate dust from fields. Autumn (September-November) marks a deterioration in air quality. The post-harvest burning of agricultural waste peaks, leading to significant spikes in PM2.5 and PM10. Temperature inversions become more frequent as temperatures drop, trapping pollutants near the ground. Winter (December-February) brings stable, cold air masses and increased use of solid fuels for heating, contributing to higher levels of sulfur dioxide and particulate matter. Fog is common, further reducing visibility and trapping pollutants. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during autumn and winter. Spring can also pose risks due to burning. Monitoring wind direction and avoiding peak burning times are advisable. The clearest air is generally found during the summer months.