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Kheïredine occupies a strategic position within the Mostaganem Province of northwestern Algeria, situated in a transitional landscape where the Mediterranean coastal influence meets the rolling hinterlands of the Tell Atlas foothills. This small but significant urban center, with a population of approximately 22,241, is defined by its proximity to the Mediterranean Sea, which serves as a vital atmospheric regulator. The local topography is characterized by undulating plains and low-lying hills, creating a terrain that facilitates both maritime ventilation and occasional localized air stagnation. As an urban settlement embedded within a predominantly agricultural matrix, the city experiences a distinct urban-rural gradient. The surrounding landscape is a mosaic of fertile Mediterranean scrubland and cultivated zones, which plays a dual role in the local airshed. While the vegetation helps mitigate some particulate matter, seasonal agricultural practices, such as biomass burning, introduce organic aerosols into the immediate atmosphere. The city's elevation and coastal proximity mean that air quality is heavily dictated by the interplay between sea breezes and continental air masses. Unlike dense industrial metropolises, Kheïredine’s pollution profile is less about heavy manufacturing and more about the interaction between local vehicular emissions, domestic heating, and the periodic influx of Saharan dust. The regional position, nestled between the coastal hub of Mostaganem and the interior plains, makes the city a recipient of both maritime moisture and continental dust, shaping its unique atmospheric chemistry and local weather patterns. Consequently, residents must remain vigilant regarding the seasonal shifts that define this Mediterranean coastal environment's air quality periodically.

In Kheïredine, the air quality narrative follows the rhythmic shifts of the Mediterranean climate. During the spring months, the atmosphere is often characterized by the arrival of the Sirocco, a warm, dusty wind blowing from the Sahara. This period can see significant spikes in particulate matter, making late March and April challenging for those with respiratory sensitivities. Summer brings intense heat, which can exacerbate ground-level ozone formation, though the refreshing Mediterranean sea breezes often provide periodic cleansing of the urban airshed. Autumn serves as a transitional period where increased humidity and occasional heavy rainfall help to wash away lingering aerosols, often resulting in some of the clearest air of the year. Winter presents a different set of challenges; as temperatures drop, the use of domestic heating for warmth can increase local emissions of nitrogen oxides and fine particulates. Furthermore, during calm, cold winter nights, temperature inversions can trap pollutants near the ground, preventing vertical dispersion. For optimal outdoor activities, the mild periods of late autumn and early spring—when the Sirocco is absent and the air is stable—are generally most favorable. Sensitive groups, including children, the elderly, and individuals with asthma, should monitor local meteorological conditions closely, particularly during high-wind Saharan events or stagnant, cold winter nights. By understanding these seasonal meteorological drivers, residents can better navigate the environmental fluctuations inherent to this unique North African coastal landscape. This proactive approach ensures that the community remains resilient against the varying atmospheric conditions that characterize the Mostaganem region throughout the entire year.