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Kalamariá is a distinctive coastal municipality situated on the eastern edge of the Thessaloniki metropolitan area within the fertile plains of Central Macedonia. Its geography is characterized by a predominantly flat, low-lying terrain that slopes gently toward the shores of the Thermaic Gulf. This strategic maritime position grants the city a unique urban character, blending dense residential blocks with scenic waterfront promenades. As a key part of the wider Thessaloniki urban agglomeration, Kalamariá experiences a seamless transition from high-density urban centers to a more relaxed coastal atmosphere. The absence of significant topographical barriers, such as mountains, allows for the relatively unobstructed movement of air masses, though this also exposes the area to the broader pollution plumes of the metropolitan basin. The city is bordered by the industrial and commercial hubs of Thessaloniki to the west, creating an urban-rural gradient that shifts from intense traffic corridors to quieter residential zones and small-scale urban gardens. The proximity to the sea is the primary driver of its local microclimate, as the Mediterranean waters act as a thermal regulator, mitigating extreme temperature swings. However, this coastal orientation also means that the city is susceptible to sea-salt aerosols and humidity, which can interact with anthropogenic pollutants. The lack of significant elevation means that air stagnation can occur during specific meteorological events, trapping particulate matter and nitrogen oxides from the heavy traffic flowing between the city center and the eastern suburbs, affecting overall breathable air quality.

In Kalamariá, air quality follows a distinct Mediterranean seasonal cycle driven by temperature and wind. Winter is typically the most challenging period; as temperatures drop, residential heating—often relying on older boilers—increases particulate emissions. This is exacerbated by thermal inversions, where a layer of warm air traps pollutants near the ground, leading to smoggy mornings. Sensitive groups, particularly those with asthma, should limit outdoor exertion during these stagnant periods. As spring arrives, the air generally clears due to increased rainfall and shifting winds, though the season introduces high pollen counts that can mimic pollution-induced respiratory distress. Summer brings intense solar radiation and high temperatures, which catalyze the formation of ground-level ozone from precursor gases emitted by heavy traffic. The "meltemi" winds often provide relief by flushing pollutants out to sea, but during heatwaves, the urban heat island effect can intensify ozone concentrations. Late summer and early autumn are generally the most favorable months for outdoor activity, provided there are no regional wildfires in Central Macedonia, which can send plumes of smoke drifting toward the coast. Autumn transitions into a period of atmospheric stability where humidity rises, occasionally trapping urban pollutants before the winter rains arrive. For those with cardiovascular issues, monitoring air quality during the winter inversion peaks and summer ozone spikes is crucial. Prioritizing walks along the waterfront during breezy afternoons ensures the cleanest air, as the sea breeze effectively displaces inland pollutants.