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’Tlat Bni Oukil, nestled within the Béni Mellal-Khénifra region of Morocco, occupies a geographically significant position in the foothills of the Middle Atlas Mountains. Located at coordinates 32.5770, -6.8400, the town’s elevation contributes to a cooler climate compared to lower-lying areas, but also influences air quality. The surrounding landscape is characterised by rolling hills and agricultural lands, primarily dedicated to olive groves, fruit orchards, and cereal cultivation. This agricultural activity, while vital to the local economy, introduces potential sources of particulate matter from dust and seasonal burning of agricultural waste. The town itself is relatively small, with a population of approximately 14,960, exhibiting a typical Moroccan rural-urban gradient. While not directly adjacent to a major body of water, the proximity to mountain streams and seasonal rivers impacts local humidity and potential for temperature inversions. There are no large-scale industrial belts immediately surrounding ’Tlat Bni Oukil, however, regional industrial activity in Béni Mellal can contribute to long-range transport of pollutants. The terrain funnels winds, potentially concentrating pollutants during periods of calm. The urban character is defined by traditional Moroccan architecture, with limited infrastructure for widespread vehicle emissions control, impacting localised air quality.

Air quality in ’Tlat Bni Oukil experiences distinct seasonal variations. Spring (March-May) sees a gradual improvement as winter inversions dissipate, but agricultural burning for land preparation can temporarily elevate particulate matter. Summer (June-August) is generally the clearest period, with prevailing winds dispersing pollutants and higher temperatures promoting atmospheric mixing. However, prolonged drought conditions can exacerbate dust levels. Autumn (September-November) marks a transition, with increased agricultural activity and the return of temperature inversions as temperatures cool. This period often sees a noticeable decline in air quality. Winter (December-February) is typically the most challenging time. Cold, stable air masses lead to frequent temperature inversions, trapping pollutants near the ground. Reduced sunlight hinders pollutant dispersion. Fog, common in the valleys, further exacerbates the issue. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exertion during winter mornings. Months to avoid prolonged outdoor activity are December and January. September and October can be problematic due to agricultural practices. Monitoring wind patterns is crucial; periods of calm are associated with poorer air quality. Local dust storms, particularly in spring, require respiratory protection.