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Sebt Bni Smith, nestled within the Tanger-Tétouan-Al Hoceïma region of Morocco, occupies a unique geographic position in the Rif Mountains. The city’s coordinates (35.1373, -4.7107) place it inland, approximately 20km from the Mediterranean Sea, influencing its climate and, consequently, its air quality. The terrain is characterised by rolling hills and valleys, typical of the Rif range, with an elevation that contributes to localised temperature inversions. Surrounding Sebt Bni Smith are predominantly agricultural lands, primarily focused on olive groves and fruit orchards, alongside some smaller-scale livestock farming. While not a major industrial hub itself, the city’s proximity to larger industrial zones along the coast, particularly around Tangier, means it can experience transboundary pollution. The urban-rural gradient is relatively sharp; the city centre is densely populated, transitioning quickly to rural agricultural landscapes. This proximity to agricultural practices introduces potential sources of particulate matter from dust and seasonal burning of agricultural waste. The prevailing winds, often originating from the Atlantic, can carry pollutants inland, impacting air quality. The city’s location within a mountainous region limits atmospheric dispersion, exacerbating pollution episodes during calm weather conditions. Understanding this interplay of geography and land use is crucial for assessing and mitigating air quality challenges in Sebt Bni Smith.

Air quality in Sebt Bni Smith exhibits a distinct seasonal pattern. Spring (March-May) often sees a moderate increase in particulate matter due to agricultural activities – ploughing and the burning of crop residue – coupled with increasing temperatures that promote photochemical smog formation. Summer (June-August) generally offers the best air quality, benefiting from consistent Atlantic breezes that help disperse pollutants, and reduced agricultural burning. However, prolonged heatwaves can trap pollutants, leading to localised stagnation. Autumn (September-November) marks a transition period, with a resurgence of agricultural burning as harvests conclude, and the onset of cooler, calmer weather conditions that favour temperature inversions, trapping pollutants in the valleys. This is often the period of poorest air quality. Winter (December-February) is characterised by cooler temperatures and increased wood burning for heating, contributing to elevated levels of particulate matter, particularly PM2.5. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during autumn and winter months. Spring can also pose risks due to agricultural dust. Monitoring wind patterns and avoiding outdoor exertion during calm, cool days is advisable. The dry climate generally limits fog formation, but localised humidity can exacerbate particulate matter impacts.