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Kenitra occupies a strategic position in northwestern Morocco, situated approximately 40 kilometers northeast of Rabat along the Atlantic coast at the mouth of the Sebou River. This port city lies within the fertile Gharb plain, Morocco's most important agricultural region, creating a distinct urban-rural gradient where urban expansion meets extensive farmland. At an elevation of just 26 meters above sea level, Kenitra's flat topography and proximity to both the Atlantic Ocean and the Sebou River estuary significantly influence its microclimate and air quality patterns. The city serves as an industrial and logistical hub within the Rabat-Sale-Kenitra region, with port activities, manufacturing zones, and transportation corridors contributing to urban pollution sources. Kenitra's location between the Atlantic coastline and agricultural hinterlands creates complex air quality dynamics, as sea breezes can disperse pollutants while agricultural burning and fertilizer use in surrounding farmlands introduce particulate matter and ammonia compounds. The city's position along major road and rail networks connecting Rabat to northern Morocco means vehicular emissions are a persistent concern, particularly along the urban corridors. Kenitra's expansion into former agricultural lands has created a patchwork of urban and green spaces that affects local air circulation patterns, with the Sebou River acting as both a natural corridor for air movement and a potential source of humidity that can interact with urban emissions.

Kenitra experiences a Mediterranean climate with distinct seasonal variations that significantly impact air quality throughout the year. During winter months from December to February, cooler temperatures and increased precipitation generally result in better air quality as rains wash pollutants from the atmosphere, though occasional temperature inversions can trap emissions near the ground, particularly during calm, clear nights. Spring brings transitional conditions from March to May, with warming temperatures and variable winds that can either disperse or concentrate pollutants depending on weather patterns; this period often sees increased agricultural activity in surrounding farmlands, potentially introducing pollen and dust into the urban airshed. Summer months from June to August typically present the most challenging air quality conditions, as higher temperatures accelerate photochemical reactions that transform vehicle and industrial emissions into ground-level ozone, while reduced rainfall allows particulate matter to accumulate; sea breezes provide some relief but can also transport marine aerosols that interact with urban pollution. Autumn from September to November offers improving conditions as temperatures moderate and occasional rains return, though this period may experience smoke from agricultural burning as farmers clear fields after harvest. Sensitive groups including those with respiratory conditions, children, and older adults should be particularly cautious during summer afternoons when ozone levels tend to peak, and during calm winter mornings when inversions may concentrate pollutants near the surface. The most favorable periods for outdoor activity generally occur during spring and autumn when temperatures are moderate and air movement is consistent.