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Cəlilabad is situated in the southernmost reaches of Azerbaijan, nestled within the fertile Kura-Aras lowland. This region is characterized by its predominantly flat, alluvial terrain, which facilitates expansive agricultural activities. Positioned strategically near the border with Iran, the town serves as a regional hub for the surrounding rural hinterlands. Its geographic setting is defined by a gentle slope toward the Caspian Sea, though it remains sufficiently inland to be influenced by continental air masses. The urban character of Cəlilabad is relatively low-density, blending small-scale residential clusters with integrated agricultural zones. This rural-urban gradient is critical for its air quality; the abundance of vegetation and open spaces typically helps disperse pollutants. However, the flat topography can lead to atmospheric stagnation during specific meteorological events. The surrounding landscape is dominated by cotton fields and grain crops, which introduce seasonal particulate matter into the atmosphere through tilling and harvesting. Because the city lacks high mountain barriers, it is susceptible to wind-borne dust from the semi-arid plains of the south. Proximity to the Caspian Sea provides a moderating influence on temperature, but the inland position means that maritime breezes do not always penetrate deeply enough to scrub the air of local emissions. Consequently, the air quality is primarily dictated by the interplay between agricultural cycles and the regional wind patterns that sweep across the lowlands, creating a dynamic atmospheric environment reflecting its regional role. The town's layout further emphasizes this connection, as residential areas are often entwined with orchards, which act as natural filters.

In Cəlilabad, air quality follows a rhythm dictated by agricultural cycles and continental weather. Spring is often a period of moderate quality, though it can be marred by wind-borne dust and pollen. As the soil dries, strong gusts sweep particulates across the lowlands, potentially irritating the respiratory systems of sensitive individuals. Summer brings high temperatures and intense sunlight, which can catalyze the formation of ground-level ozone. While the sea breezes occasionally provide relief, the heat often traps pollutants near the surface during stagnant afternoons. Autumn is typically the most challenging season. This period coincides with the harvest and the subsequent burning of agricultural residues, leading to a spike in particulate matter. Smoke from these fires can linger in the air, especially during the cool, damp mornings of October and November. Winter introduces a different challenge: temperature inversions. As cold air settles over the flat terrain, it traps emissions from domestic heating and vehicle exhausts close to the ground. This creates a layer of smog that can persist for several days, particularly in December and January. For those with asthma or chronic obstructive pulmonary disease, winter and autumn are the most critical months to limit prolonged outdoor exertion and exposure. Conversely, late spring and early autumn often offer the freshest air. Residents are advised to monitor local wind patterns, as northerly winds typically clear the basin, while stagnant southern air may concentrate pollutants, requiring caution for vulnerable groups during these times. Proper ventilation and masking during smoke events are highly recommended.