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Ţalkhā is strategically positioned in the Nile Delta region of Egypt's Ad Daqahlīyah Governorate, approximately 120 kilometers north of Cairo and 40 kilometers from the Mediterranean coast. This urban center sits at a modest elevation of just 5 meters above sea level on the flat, fertile alluvial plains that characterize the Delta's landscape. The city's geography profoundly influences its air quality through multiple mechanisms. Located in one of Egypt's most densely populated agricultural zones, Ţalkhā is surrounded by intensive rice cultivation, cotton fields, and vegetable farms that contribute agricultural emissions including ammonia from fertilizers and biomass burning during harvest seasons. The city's proximity to the Damietta branch of the Nile River provides some natural ventilation but also creates humidity that can trap pollutants. Ţalkhā lies within Egypt's northern industrial belt, with nearby manufacturing centers in Mansoura and Damietta contributing regional pollution that drifts into the city. The urban-rural gradient shows rapid transition from dense urban fabric to agricultural land, creating a mosaic of pollution sources. The flat terrain inhibits natural dispersion of pollutants, while the Mediterranean Sea's influence brings seasonal winds that alternately clear or concentrate contaminants depending on direction and strength. This geographic context creates a complex air quality environment where urban emissions from transportation and residential heating blend with agricultural and industrial pollutants from the surrounding region.

Ţalkhā experiences distinct seasonal air quality patterns shaped by the Mediterranean climate and local emission sources. During winter (December-February), cooler temperatures and frequent temperature inversions trap pollutants close to the ground, creating the year's worst air quality episodes. The burning of agricultural waste after harvests combines with increased residential heating emissions to create persistent haze. Sensitive groups should limit outdoor activities on calm winter mornings when inversion layers are strongest. Spring (March-May) brings improving conditions as rising temperatures break up inversion layers and northwest winds from the Mediterranean disperse pollutants. However, agricultural activities including fertilizer application and field preparation can cause temporary spikes in particulate matter. Summer (June-August) offers the cleanest air despite high temperatures, as strong northwesterly winds provide excellent ventilation and frequent sea breezes flush the Delta region. This is the optimal season for outdoor activities, though ozone formation can occasionally be concern during heatwaves. Autumn (September-November) sees a gradual deterioration as winds weaken and agricultural burning resumes after rice harvests. The transition period in October-November often shows worsening particulate levels. Throughout the year, sensitive individuals should monitor daily conditions, as weather patterns can create sudden changes—calm days in any season can lead to pollutant accumulation, while windy days provide natural cleansing regardless of season.