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Yehud, situated in the Central District of Israel, occupies a strategic position within the highly urbanized coastal plain. Its coordinates (32.0333, 34.8833) place it relatively close to the Mediterranean Sea, approximately 15 kilometers inland. The terrain is gently undulating, characteristic of the Judean Foothills, with an elevation ranging from 40 to 80 meters above sea level. This proximity to the coast influences local weather patterns, providing moderating effects but also potential for humidity and sea breezes that can trap pollutants. Yehud is essentially a suburban extension of Tel Aviv, forming part of the greater metropolitan area. Surrounding the city are intensive agricultural zones, particularly citrus groves and vegetable farms, alongside expanding industrial areas concentrated along major transportation corridors. The urban-rural gradient is steep, transitioning rapidly from dense residential areas to open agricultural land. This proximity to both agricultural activity (potential ammonia emissions from fertilizers) and industrial zones (vehicle emissions, manufacturing byproducts) significantly impacts local air quality. The Ben Gurion Airport, a major regional hub, is located immediately adjacent to Yehud, contributing substantially to localized air pollution from aircraft emissions and ground support vehicles. The prevailing winds generally flow from the west, carrying pollutants inland from the coast and Tel Aviv.

Yehud’s air quality follows a distinct seasonal pattern dictated by meteorological conditions and human activity. Summer (June-August) often sees elevated ozone levels due to intense sunlight and high temperatures reacting with vehicle emissions. While winds can offer some dispersion, temperature inversions, particularly in the mornings, can trap pollutants near the ground. Autumn (September-November) brings a transition period, with decreasing temperatures and the potential for increased dust from regional sources. Winter (December-February) is typically the period of best air quality, benefiting from rainfall which effectively washes pollutants from the atmosphere and stronger, more frequent winds. However, increased heating fuel use can contribute to particulate matter. Spring (March-May) sees a gradual increase in pollution as agricultural activity intensifies, with fertilizer application releasing ammonia. The proximity to Ben Gurion Airport means aircraft emissions are a year-round concern, but are potentially more noticeable when winds are calm. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during summer afternoons and periods of calm winds. Monitoring local conditions and heeding health advisories is crucial, particularly during seasonal transitions.