Dongola Air Quality Index (AQI)

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Dongola, situated in northern Sudan at coordinates 19.1769, 30.4839, is a city intrinsically linked to the Nile River. The city occupies a strategic position on the east bank of the Nile, approximately 550km north of Khartoum, serving as a vital trade and agricultural hub for the region. The surrounding landscape is dominated by the Nubian Desert, a vast expanse of arid and semi-arid terrain characterized by rocky plateaus, sand dunes, and sparse vegetation. Dongola’s elevation is relatively low, around 330 meters above sea level, contributing to limited atmospheric dispersion of pollutants. The urban-rural gradient is sharp; the city itself is a concentrated area of activity, quickly giving way to agricultural lands along the Nile’s fertile banks and then to the harsh desert. While Dongola isn’t heavily industrialized, local brick kilns and agricultural practices (particularly burning of crop residue) contribute to particulate matter. Dust storms, frequent in this region, are a significant factor impacting air quality. The Nile, while a source of life, also limits air circulation, potentially trapping pollutants during calm weather conditions. The city’s location within a rain shadow further exacerbates dust accumulation and reduces natural cleansing through precipitation.

Dongola experiences a harsh desert climate with extreme temperature variations. Air quality is generally poorest during the dry season, spanning roughly November to April. This period sees frequent dust storms originating from the surrounding Nubian Desert, dramatically increasing particulate matter concentrations. The lack of rainfall during these months means pollutants aren’t washed away, leading to prolonged periods of poor air quality. January and February are particularly challenging. Conversely, the brief wet season, from July to September, offers temporary relief. While the rainfall is limited, it helps to suppress dust and cleanse the atmosphere. However, increased humidity can also contribute to the formation of secondary pollutants. The ‘khamsin’ winds, hot and dry southerly winds, can exacerbate dust conditions even during the wetter months. October and November see a transition period with fluctuating conditions. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exertion during the dry season, particularly when dust storms are forecast. Staying indoors with windows closed and using air filtration systems are recommended. Monitoring local weather reports for dust storm warnings is crucial.