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Mīt Salsīl, nestled within the Ad Daqahlīyah Governorate of Egypt, occupies a crucial position in the Nile Delta. Located at approximately 31.1676°N, 31.8012°E, the city’s geography is defined by the flat, fertile lands characteristic of this region. The elevation is minimal, typical of the Delta, making it highly susceptible to humidity and stagnant air masses. Mīt Salsīl is interwoven with a dense network of irrigation canals branching from the Nile, vital for the surrounding agricultural landscape. This landscape is overwhelmingly dominated by intensive farming, primarily rice cultivation, a significant contributor to methane emissions and potential for seasonal burning of agricultural waste. The urban character of Mīt Salsīl is transitioning, exhibiting a gradient from denser central areas to more dispersed rural settlements. Its proximity to larger urban centres like Mansoura influences its development and pollution exposure. The prevailing winds, generally northwesterly, transport pollutants from these areas, exacerbating local air quality issues. The lack of significant topographical features hinders natural dispersion of pollutants, trapping them within the Delta basin. This flat terrain, combined with agricultural practices and regional industrial activity, creates a complex air quality scenario for Mīt Salsīl.

Air quality in Mīt Salsīl follows a distinct seasonal pattern dictated by Egypt’s Mediterranean climate and agricultural cycles. Winter (December-February) generally experiences the best air quality, with cooler temperatures and occasional rainfall helping to settle dust and pollutants. However, temperature inversions can trap emissions near the ground, particularly during calm, clear nights. Spring (March-May) sees a gradual increase in pollution as agricultural activities intensify, including the burning of rice straw after harvest – a major source of particulate matter. Summer (June-August) brings high temperatures and humidity, potentially leading to the formation of ground-level ozone, especially downwind of urban areas. The heat also exacerbates dust resuspension. Autumn (September-November) is often the worst period, coinciding with peak agricultural burning and the accumulation of pollutants from the preceding months. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exertion during autumn. Fog, common in the cooler months, can trap pollutants and reduce visibility. Avoiding outdoor activity during periods of heavy fog and agricultural burning is advisable. Monitoring local conditions and heeding health advisories is crucial for protecting respiratory health.