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Sedaví sits nestled within the fertile Horta Sud region of the Valencian Community, acting as a transitional zone between the sprawling metropolis of Valencia and the traditional agricultural heartlands. The terrain is characterized by its extreme flatness, typical of the coastal plains formed by the Turia river basin, which offers little topographic resistance to wind patterns. This low-lying geography makes the municipality highly susceptible to the influence of the Mediterranean Sea, located just a few kilometers to the east. The urban character of Sedaví is a blend of residential clusters and industrial pockets, heavily influenced by its proximity to the V-30 highway, a critical logistical artery that funnels heavy vehicular traffic through the region. This positioning creates a complex air quality dynamic; while the open landscape allows for some dispersion, the concentration of transport-related emissions from the highway introduces significant nitrogen dioxide and particulate matter. Surrounding the town are the remnant orchards of the huerta, which provide a vital green lung but also introduce seasonal agricultural emissions. The urban-rural gradient is sharp, with dense residential blocks quickly giving way to citrus groves and greenhouses. Consequently, the air quality is a tug-of-war between the refreshing sea breezes that sweep inland and the stagnant pollutants trapped by the industrial belt. This geographic intersection ensures that Sedaví reflects both the environmental challenges of a growing metropolitan hub and the ecological characteristics of a Mediterranean agrarian landscape.

In Sedaví, air quality shifts in harmony with the Mediterranean cycle. Winter often brings the most stagnant conditions, as temperature inversions can trap pollutants from the V-30 highway and domestic heating near the ground, leading to spikes in particulate matter during cold, windless mornings. This period requires sensitive groups, such as asthmatics, to limit outdoor exertion during dawn. As spring arrives, the narrative shifts toward biological aerosols; the blooming of the surrounding huerta introduces high pollen counts, which, combined with rising temperatures, can exacerbate respiratory distress. Summer represents a challenging phase characterized by intense solar radiation and high temperatures, which catalyze the formation of ground-level ozone. The "cierzo" or sea breezes provide some relief, but the stagnant midday heat often concentrates smog, making late afternoon the ideal time for outdoor activity. Autumn typically offers the cleanest air of the year, as the "gota fría" or heavy torrential rains effectively scrub the atmosphere of suspended particulates and dust, resetting the environmental baseline. However, the transition from summer to autumn can sometimes bring Saharan dust plumes, which temporarily degrade visibility and air quality. For those with chronic obstructive pulmonary disease, the transition between winter and spring is particularly critical. By monitoring these seasonal rhythms, residents can better navigate the interplay between the region's industrial logistics and its natural climatic oscillations, ensuring health is prioritized during peak pollution windows.