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Antigua, nestled on the northeastern coast of Fuerteventura, Canary Islands, Spain, occupies a unique geographic position profoundly influencing its air quality. The island itself, a volcanic remnant, presents a relatively flat terrain, sloping gently towards the sea. Antigua’s elevation is minimal, rarely exceeding 50 meters above sea level, minimizing the potential for topographic trapping of pollutants. Its location within the Macaronesian subtropical zone dictates a consistently mild climate, but also exposes it to the trade winds, a crucial factor in air dispersal. The surrounding landscape is dominated by expansive, arid plains and volcanic rock formations, with limited dense vegetation cover, which reduces natural air filtration. Fuerteventura’s proximity to the African continent (approximately 100km) means it occasionally experiences Saharan dust events, significantly impacting air quality. While Antigua itself is a small village, it sits within a broader agricultural zone focused on potato cultivation and livestock farming, introducing localized sources of ammonia and particulate matter. The urban–rural gradient is gradual, with agricultural land transitioning seamlessly into the village and then to the coastal landscape. There are no major industrial belts nearby; the island’s economy is primarily tourism-driven, with associated vehicle emissions being the most significant localized pollution source. The consistently strong trade winds generally provide good ventilation, but periods of calm can lead to localized pollutant accumulation, particularly near the village center.

Antigua’s air quality follows a distinct seasonal pattern dictated by prevailing winds and temperature fluctuations. The warmer months (June-August) typically see the most significant influence from Saharan dust events, carried across the Atlantic by southerly winds. These episodes can dramatically reduce visibility and increase particulate matter, impacting respiratory health. While the trade winds usually provide good ventilation, prolonged periods of calm during summer can exacerbate localized pollution from vehicle traffic and agricultural activities. Autumn (September-November) often brings a transition period, with a gradual decrease in dust events and a slight increase in humidity. Winter (December-February) generally offers the best air quality, with consistent trade winds effectively dispersing pollutants. However, occasional cold fronts can trigger temperature inversions, trapping pollutants closer to the ground, particularly in the mornings. Spring (March-May) sees a gradual return of Saharan dust, though typically less intense than in summer. The consistently mild temperatures throughout the year minimize the formation of fog, which can otherwise contribute to pollutant accumulation. Sensitive groups, such as children, the elderly, and individuals with respiratory conditions, should monitor local air quality reports and limit outdoor activity during Saharan dust events or periods of temperature inversion. Staying indoors with windows closed and using air purifiers can provide additional protection. During the dust events, wearing a properly fitted mask can also reduce exposure to particulate matter.