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Almazora, nestled in the province of Valencia, Spain, occupies a strategic position within the wider Mediterranean landscape. Located at coordinates 39.9403, -0.0625, the city benefits from a relatively low elevation, contributing to a mild climate but also potentially trapping pollutants. The terrain is characterised by a gentle slope descending towards the Mediterranean Sea, approximately 8km to the east, influencing local wind patterns. Surrounding Almazora is a mix of agricultural land, primarily citrus groves and olive farms, and increasingly, light industrial activity concentrated along the coastal corridor. This blend presents a complex air quality scenario. The urban-rural gradient is noticeable, with air quality generally improving as one moves away from the town centre and towards the surrounding countryside. However, prevailing winds can carry agricultural aerosols – pesticides and dust – into the urban area. The proximity to the Castellón industrial area, further north along the coast, also introduces potential for long-range pollutant transport. The city’s position within a coastal plain means it’s less sheltered from marine air masses, which can both dilute and transport pollutants. Understanding these geographical factors is crucial for managing and mitigating air pollution in Almazora.

Almazora’s air quality follows a distinct seasonal pattern. Summer months (June-August) often see improved air quality due to stronger sea breezes dispersing pollutants and reduced heating demands. However, high temperatures can exacerbate ozone formation, a secondary pollutant, particularly during periods of stagnant air. Autumn (September-November) brings increased agricultural activity – harvesting and land preparation – leading to higher particulate matter from dust and burning of agricultural waste. This is often coupled with the onset of temperature inversions, trapping pollutants near the ground. Winter (December-February) experiences the lowest temperatures and potential for increased wood burning for heating, contributing to particulate matter concentrations. Fog, common during these months, further reduces dispersion. Spring (March-May) is a transitional period, with fluctuating conditions. April and May can see a resurgence of agricultural activity, alongside increasing pollen counts, impacting respiratory health. For sensitive groups – children, the elderly, and those with respiratory conditions – avoiding outdoor exertion during peak agricultural periods in autumn and periods of stagnant air in winter is advisable. Monitoring wind direction and avoiding activity downwind of agricultural areas is also prudent.