Tebourba Air Quality Index (AQI)

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Tebourba, nestled within the Manouba Governorate of Tunisia, presents a fascinating case study in urban geography and air quality. Located at approximately 36.8333°N, 9.8333°E, the city occupies a position in the northern part of the country, characterized by rolling hills and fertile agricultural land. The terrain is undulating, a transition zone between the coastal plains and the higher elevations of the Dorsal Mountains. This topography significantly influences air circulation, potentially creating localized pockets of stagnant air where pollutants can accumulate. Tebourba’s elevation, around 750m above sea level, contributes to cooler temperatures compared to coastal areas, but also increases the likelihood of temperature inversions, trapping pollutants near the ground. The Medjerda River valley lies relatively close, influencing humidity and potentially contributing to the transport of agricultural aerosols. While not heavily industrialized itself, Tebourba’s proximity to the greater Tunis metropolitan area, a significant industrial and commercial hub, means it’s susceptible to regional pollution transport. The surrounding landscape is dominated by olive groves and cereal farming, contributing to particulate matter from agricultural activities, particularly during harvest seasons. The urban-rural gradient is relatively sharp, with agricultural land immediately bordering the city limits, creating a complex interplay of emissions sources.

Tebourba’s air quality follows a distinct seasonal pattern, largely dictated by meteorological conditions and agricultural practices. Spring (March-May) sees a gradual improvement in air quality as rainfall increases, washing away accumulated pollutants from the drier winter months. However, pollen counts are high, impacting those with allergies. Summer (June-August) is typically the clearest period, with prevailing winds dispersing pollutants and high temperatures promoting atmospheric mixing. However, heatwaves can exacerbate ozone formation. Autumn (September-November) marks a deterioration in air quality. The harvest season for olives and cereals generates significant dust and particulate matter, particularly when fields are prepared and crops are processed. Temperature inversions become more frequent, trapping pollutants in the valleys. Winter (December-February) is often the most polluted time. Reduced rainfall means pollutants accumulate, and wood burning for heating becomes common, adding to particulate matter levels. Calm, stable air masses exacerbate the problem. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during autumn and winter. Months to favour for outdoor activity are June, July and August, but even then, monitoring conditions is advisable.