El Arrouch Air Quality Index (AQI)

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El Arrouch, nestled within the Skikda province of Algeria, occupies a strategically important coastal position along the Mediterranean Sea. Located at approximately 36.65°N, 6.84°E, the city’s geography is characterized by a gently sloping terrain rising from the shoreline towards a backdrop of the Tell Atlas mountains. This gradual elevation change, combined with its proximity to the sea, creates a unique microclimate influencing air quality. The surrounding landscape is a blend of agricultural land, primarily olive groves and citrus orchards, interspersed with pockets of maquis shrubland typical of the Mediterranean region. To the west, the urban sprawl of Skikda city exerts an influence, while eastward, the terrain becomes increasingly rugged, transitioning into the foothills of the Atlas range. This urban–rural gradient means El Arrouch experiences a mix of urban and agricultural emissions. The city’s coastal location exposes it to maritime influences, including sea breezes that can disperse pollutants, but also to salt spray and potential for coastal fog events. Historically, the region has seen some industrial activity, though El Arrouch itself is primarily a residential and agricultural hub. The prevailing winds generally blow from the northwest, carrying potential pollutants from inland sources towards the coast, a factor significantly impacting local air quality patterns. The relatively flat coastal plain facilitates the accumulation of pollutants, particularly during periods of calm weather.

El Arrouch’s air quality follows a distinct seasonal pattern dictated by its Mediterranean climate. The warm, dry summers (June-August) often see a stagnation of air due to high-pressure systems, leading to a build-up of pollutants from local sources like agricultural burning and vehicle emissions. While sea breezes offer some relief, prolonged periods of calm can trap pollutants close to the ground. Spring (March-May) and Autumn (September-November) generally offer the most favourable conditions, with more frequent wind patterns aiding in pollutant dispersion. However, spring can also bring dust storms from the Sahara, significantly degrading air quality. Winter (December-February) presents a different challenge. Cooler temperatures and increased humidity can lead to the formation of fog, particularly in the mornings, trapping pollutants and reducing visibility. Temperature inversions, where a layer of warm air sits above cooler air near the ground, are also more common during winter, further exacerbating the problem. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during periods of stagnant air in summer and foggy conditions in winter. Outdoor activities are generally best enjoyed during the spring and autumn months, avoiding peak traffic times and agricultural burning seasons. While the sea breeze typically provides some cleansing effect, local emissions remain a key factor influencing air quality throughout the year, requiring vigilance and awareness of prevailing weather conditions.