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Ahmed Rachedi, nestled within the Mila Province of Algeria, occupies a geographically significant position in the Aurès Mountains. Located at coordinates 36.4000, 6.1167, the city sits at an elevation contributing to a cooler climate compared to lower-lying regions. The surrounding landscape is characterised by rugged mountains, plateaus, and valleys, typical of the Tell Atlas range. This terrain significantly influences air quality, creating localized pockets of stagnant air where pollutants can accumulate. The city’s relatively small population of 14,489 suggests a less intense concentration of industrial or vehicular emissions than larger Algerian urban centres, but agricultural practices in the surrounding valleys – primarily cereal cultivation and olive groves – can contribute to particulate matter from dust and seasonal burning. The urban-rural gradient is quite sharp; the city itself is compact, quickly transitioning to agricultural land and then mountainous terrain. Proximity to larger industrial zones is limited, but regional transport routes passing through the province can introduce pollutants. The prevailing winds, channeled through the mountain passes, play a crucial role in dispersing or concentrating these emissions, impacting local air quality patterns. Understanding this interplay between topography, land use, and wind patterns is vital for assessing and mitigating pollution risks in Ahmed Rachedi.

Ahmed Rachedi experiences a Mediterranean climate with hot, dry summers and mild, wet winters. Air quality generally deteriorates during the summer months (June-August) due to increased temperatures and reduced rainfall, leading to lower dispersion of pollutants. Strong, dry winds can also stir up dust from agricultural lands, exacerbating particulate matter levels. Autumn (September-November) brings a temporary improvement as cooler temperatures and increased precipitation help to cleanse the air. However, the onset of heating using wood and other biomass fuels in households can contribute to localised indoor and outdoor air pollution. Winter (December-February) sees a return of potential stagnation, with temperature inversions trapping pollutants in the valleys. Fog, common during this period, can further reduce visibility and worsen air quality. Spring (March-May) is typically the most favourable season, with moderate temperatures, increased rainfall, and a gradual reduction in heating fuel use. Sensitive groups – children, the elderly, and those with respiratory conditions – should be particularly cautious during the summer and winter months, limiting strenuous outdoor activity on days with poor visibility or known pollution events. Monitoring wind direction and avoiding areas near agricultural burning are also advisable.