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Zghartā, nestled in the Liban-Nord Governorate of Lebanon, occupies a unique geographic position influencing its air quality. The city is situated on a plateau approximately 600-700 meters above sea level, within the mountainous region of northern Lebanon. This elevation contributes to cooler temperatures and increased precipitation compared to coastal areas, but also creates conditions conducive to temperature inversions, trapping pollutants. The surrounding landscape is characterized by rugged terrain, olive groves, and agricultural lands, transitioning to more densely forested areas further inland. Zghartā is roughly 20 kilometers inland from the Mediterranean Sea, meaning direct marine influences on air dispersal are limited, though sea breezes can occasionally offer temporary relief. While not directly within a major industrial belt, the broader region experiences agricultural burning, particularly of olive tree remnants, and some small-scale industrial activity in nearby towns. The urban-rural gradient is relatively sharp; Zghartā itself is a significant population center, but quickly gives way to rural agricultural landscapes. This proximity to agricultural practices, combined with the topography, means pollutants generated locally and transported from surrounding areas can accumulate, impacting air quality. The city’s position within a valley also restricts air circulation, exacerbating pollution events.

Zghartā’s air quality follows a distinct seasonal pattern. Spring (March-May) sees a gradual improvement after the winter, but agricultural burning begins, releasing particulate matter and contributing to hazy conditions. Summer (June-August) typically offers the cleanest air, driven by prevailing winds and higher temperatures promoting dispersion, though occasional dust storms from the Syrian desert can impact visibility and air quality. However, increased traffic during the tourist season can locally elevate nitrogen dioxide levels. Autumn (September-November) is often the most challenging period. The burning of agricultural waste intensifies as farmers prepare for winter, creating significant smoke pollution. Temperature inversions become more frequent, trapping pollutants in the valley. Winter (December-February) brings cooler temperatures and increased use of heating fuels, particularly wood and diesel, leading to elevated levels of particulate matter and sulfur dioxide. Sensitive individuals – children, the elderly, and those with respiratory conditions – should limit outdoor activity during autumn and winter months. Spring can also pose risks due to agricultural smoke. Favour summer months for outdoor activities, but remain aware of potential dust events. Monitoring local conditions is crucial, as weather patterns can rapidly change.