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Touama, a small city nestled within the Marrakech-Safi region of Morocco, presents a unique geographic context influencing its air quality. Located at approximately 31.5339°N latitude and -7.4872°W longitude, the city sits on the edge of the High Atlas Mountains foothills, approximately 60km south of Marrakech. The terrain is characterised by a transition from the relatively flat Haouz Plain to the rugged, higher elevations. This proximity to the mountains impacts wind patterns, creating localised circulations and potential for temperature inversions, trapping pollutants. Touama’s elevation, around 480m above sea level, contributes to cooler temperatures compared to the lower-lying plains, but also influences atmospheric mixing. The surrounding landscape is predominantly agricultural, with olive groves and cereal farming dominating the area. While Touama itself isn’t heavily industrialised, its connection to Marrakech means it’s susceptible to regional pollution transport. The urban-rural gradient is relatively sharp; moving just a few kilometres outside the city limits brings a noticeable improvement in air quality. Dust from the Sahara Desert, a frequent occurrence in Morocco, significantly impacts particulate matter levels, particularly during the drier months. The lack of substantial bodies of water nearby means limited evaporative cooling and a drier atmosphere, exacerbating dust suspension.

Touama’s air quality follows a distinct seasonal pattern, heavily influenced by meteorological conditions. Spring (March-May) sees a gradual improvement as rainfall washes away accumulated dust and pollutants, though agricultural burning can briefly elevate particulate matter. Summer (June-August) is typically the hottest and driest period, with increased dust intrusion from the Sahara, leading to poorer air quality. Strong, dry winds exacerbate the problem, carrying fine particles into the city. Autumn (September-November) brings a transition, with decreasing temperatures and occasional rainfall offering temporary relief. However, this is also a period of increased agricultural activity, including olive harvesting and processing, which can contribute to localised smoke pollution. Winter (December-February) often experiences temperature inversions, trapping pollutants near the ground, particularly during calm, clear weather. These inversions, combined with wood and charcoal burning for heating, can lead to elevated levels of particulate matter and carbon monoxide. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during winter mornings and periods of calm weather. Avoiding outdoor exertion during peak summer dust storms is also advisable. Months of March-April and October-November generally offer the most favourable air quality conditions.