Tahannawt Air Quality Index (AQI)

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Tahannawt, nestled within the Marrakech-Safi region of Morocco at coordinates 31.3514, -7.9508, is a small urban centre profoundly shaped by its geographical setting. The city sits on the Haouz Plain, a relatively flat expanse south of the Atlas Mountains, at an elevation of approximately 480 meters. This plain, historically fertile due to alluvial deposits from the mountains, is now experiencing increasing pressures from urbanization and agricultural intensification. The proximity of the High Atlas Mountains creates a rain shadow effect, contributing to a semi-arid climate. While not directly on the coast, Tahannawt is approximately 60km inland from the Atlantic Ocean, meaning maritime influences are limited but can occasionally bring humid air. Surrounding Tahannawt are significant olive groves and agricultural lands, alongside smaller-scale industrial activity concentrated around Marrakech city itself. The urban-rural gradient is quite sharp; transitioning quickly from densely populated areas to agricultural fields. This proximity to both agricultural practices (potentially involving burning of agricultural waste) and the larger industrial hub of Marrakech significantly impacts local air quality. Dust from the surrounding plains, exacerbated by wind patterns, is a consistent factor, alongside emissions from transport and domestic heating, particularly during cooler months. The terrain funnels winds, potentially concentrating pollutants during periods of stagnation.

Air quality in Tahannawt follows a distinct seasonal pattern. Spring (March-May) sees improving conditions as rainfall increases, washing away accumulated dust and reducing reliance on heating. However, agricultural burning begins, introducing particulate matter into the air. Summer (June-August) is typically the clearest period, with hot, dry conditions and consistent winds dispersing pollutants. However, intense heat can contribute to ground-level ozone formation. Autumn (September-November) marks a deterioration in air quality. The end of the rainy season means less atmospheric cleansing, and increased use of heating for cooler evenings. Agricultural activities continue, with post-harvest burning adding to particulate pollution. Winter (December-February) is generally the worst period for air quality. Temperature inversions, common in the valley setting, trap pollutants close to the ground. Increased use of wood and charcoal for heating, combined with reduced wind speeds, leads to higher concentrations of particulate matter and other combustion byproducts. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during winter mornings and evenings. Avoiding strenuous exercise near busy roads is advisable year-round. Monitoring local conditions and heeding health advisories is crucial.