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Larnaca, situated on the southeastern coast of Cyprus (34.9167° N, 33.6333° E), occupies a geographically significant position within the Eastern Mediterranean. The city’s urban fabric is interwoven with the expansive Larnaca Salt Lake, a Ramsar wetland of international importance, which dramatically influences local microclimates and contributes to unique atmospheric conditions. The surrounding landscape is characterized by a gradual transition from coastal plains to gently rolling hills, rising to the Troodos Mountains in the west, providing a backdrop that impacts regional wind patterns. Larnaca’s terrain is predominantly flat, facilitating urban sprawl and a relatively dense population distribution. The proximity to the Mediterranean Sea is a defining feature, moderating temperatures and influencing sea breezes that play a crucial role in air dispersion. While Larnaca itself has limited heavy industry, it lies within a broader agricultural zone, with citrus groves and other crops extending inland. This agricultural activity, while vital to the Cypriot economy, can contribute to localized emissions, particularly during harvesting and fertilization periods. The urban–rural gradient is relatively smooth, with smaller villages and agricultural land interspersed within the metropolitan area. The prevailing north-easterly winds, known as the Meltemi, are a key factor in Larnaca’s air quality, often dispersing pollutants, but can also trap them under specific meteorological conditions. The shallow depth of the surrounding basin can exacerbate the effects of temperature inversions, hindering vertical mixing and leading to pollutant accumulation.

Larnaca’s air quality experiences a distinct seasonal cycle dictated by its Mediterranean climate. Summers (June-August) are typically characterized by high temperatures and prolonged periods of sunshine, often accompanied by stagnant air conditions. The intense solar radiation promotes photochemical smog formation, particularly during the afternoon hours, as pollutants react in the presence of sunlight. While the Meltemi winds usually provide some relief, their frequency diminishes during the peak summer months, leading to potential pollutant build-up. Spring (March-May) and Autumn (September-November) generally offer the most favourable air quality, with moderate temperatures and more consistent wind patterns that aid in pollutant dispersal. However, agricultural burning, a traditional practice in Cyprus, can significantly impact air quality during these transitional periods, particularly in rural areas surrounding Larnaca. Winter (December-February) brings cooler temperatures and increased rainfall, which helps to cleanse the atmosphere. However, fog events, particularly in coastal areas, can trap pollutants near the ground, creating localized air quality concerns. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during summer afternoons and be mindful of potential agricultural burning events in spring and autumn. Outdoor activities are generally best enjoyed during the cooler morning hours throughout the year, and during the spring and autumn months, when the air is typically fresher. The combination of sunshine, temperature, and wind patterns creates a dynamic air quality profile throughout the year in Larnaca.