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Iygli, nestled within Morocco’s Souss-Massa region at approximately 29.5001°N, -9.0501°W, is a small city characterized by its proximity to the Atlantic coast and the Anti-Atlas Mountains. The terrain is gently undulating, transitioning from arable land towards the foothills. Situated roughly 20km inland from the Atlantic, Iygli benefits from some maritime influence, but is largely shielded from direct coastal winds by intervening hills. The surrounding landscape is dominated by agricultural zones – primarily argan tree cultivation and smaller-scale farming – which contribute significantly to the local economy. The urban-rural gradient is quite sharp; Iygli itself is a relatively compact settlement, quickly giving way to rural agricultural landscapes. This proximity to agricultural activity, while economically vital, introduces potential sources of particulate matter from dust and agricultural burning. The elevation is modest, around 100-200m above sea level, which limits the potential for strong temperature inversions, but doesn’t eliminate them entirely. The city’s location within a valley can also trap pollutants during calm weather conditions. Limited industrial activity within Iygli itself suggests that the primary air quality concerns are likely linked to agricultural practices, domestic fuel burning, and regional dust transport from the Sahara.

Iygli’s air quality follows a distinct seasonal pattern, largely dictated by meteorological conditions and agricultural cycles. The summer months (June-August) often see a slight deterioration in air quality due to increased temperatures and drier conditions, leading to greater dust resuspension from agricultural fields. Calm winds can exacerbate this, trapping pollutants near the ground. Autumn (September-November) brings a temporary improvement as the first rains settle dust and reduce agricultural activity. However, this is often followed by a period of increased domestic fuel burning for heating as temperatures drop. Winter (December-February) is typically the period of poorest air quality, with temperature inversions becoming more frequent, trapping smoke from wood and charcoal burning close to the ground. Sensitive individuals, particularly those with respiratory conditions, should limit outdoor exertion during these months. Spring (March-May) offers the best air quality, with increased rainfall, moderate temperatures, and the resumption of agricultural activities that are less prone to dust generation. The prevailing winds from the Atlantic generally help to disperse pollutants. Fog, common in the mornings during winter, can also temporarily increase particulate matter concentrations. Avoiding strenuous outdoor activity during calm, cold mornings is advisable.