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Skhour Rehamna, nestled within the Marrakech-Safi region of Morocco, occupies a geographically significant position at approximately 32.48°N, -7.92°W. The city’s terrain is characterized by a gently sloping landscape, part of the broader High Atlas foothills, resulting in an elevation of around 650 meters above sea level. This location places it within a transitional zone between the fertile plains of the Saïss valley and the rugged mountainous interior. The surrounding landscape is a mosaic of agricultural fields – primarily olive groves and orchards – interspersed with traditional Berber villages. The proximity to Marrakech, a major urban center approximately 20 kilometers to the northeast, exerts a considerable influence on Skhour Rehamna, creating a gradual urban-rural gradient. While Skhour Rehamna itself retains a distinctly rural character, the increasing connectivity and commuter flows from Marrakech contribute to localized air quality challenges. The absence of major rivers or lakes within immediate proximity means humidity levels are generally low, a factor impacting atmospheric stability and pollutant dispersion. Further afield, the Atlantic coast, roughly 50 kilometers west, influences prevailing wind patterns, though the Atlas Mountains often disrupt these, creating localized variations in airflow. The region’s agricultural practices, including the use of fertilizers and occasional burning of crop residues, alongside the increasing vehicular traffic linked to Marrakech, contribute to the city’s air quality profile. The topography, combined with these factors, can lead to stagnant air conditions, particularly during periods of calm weather.

Skhour Rehamna experiences a Mediterranean climate, dictating a distinct seasonal pattern in air quality. The dry season, spanning roughly from April to October, is typically characterized by high temperatures and minimal rainfall. During the summer months (July-August), intense solar radiation and reduced precipitation lead to increased photochemical smog formation, as volatile organic compounds (VOCs) emitted from agricultural activities and vehicle exhaust react with sunlight. The lack of rainfall and relatively low humidity exacerbate this issue. Autumn (September-November) often sees a slight improvement as temperatures begin to cool, but stagnant air conditions can still occur, trapping pollutants. Winter (December-March) brings cooler temperatures and occasional rainfall, which helps to cleanse the atmosphere and reduce particulate matter. However, temperature inversions, common during clear, cold nights, can trap pollutants near the ground, leading to localized episodes of poor air quality. Fog, while infrequent, can also exacerbate this effect. Spring (March-April) is generally the most pleasant time for outdoor activities, with moderate temperatures and increasing rainfall. Sensitive groups, such as children, the elderly, and individuals with respiratory conditions, should exercise caution during the summer months and be mindful of potential temperature inversions in winter. Agricultural workers should be aware of potential exposure to pesticides and fertilizers, and take appropriate protective measures. Periods of calm winds, particularly during the transition seasons, are often associated with elevated pollutant concentrations, making it prudent to limit strenuous outdoor activity during these times.