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Umm Badr, nestled within the expansive North Kordofan state of Sudan, occupies a geographically significant position on the edge of the Bayuda Desert. Located at approximately 14.2333° N, 27.9500° E, the city’s terrain is predominantly characterized by undulating sandy plains and rocky outcrops, typical of a semi-arid environment. The elevation is relatively low, contributing to a tendency for pollutants to accumulate under certain meteorological conditions. Umm Badr’s urban character is that of a small, developing settlement, largely reliant on agriculture and limited local trade. The surrounding landscape is dominated by sparse vegetation, acacia woodlands, and vast stretches of desert, creating a stark urban–rural gradient. While not directly adjacent to major rivers, the region experiences occasional rainfall during the rainy season, which can temporarily influence air quality by washing particulate matter from the atmosphere. The city’s regional position places it within a zone experiencing increasing desertification, impacting dust levels. There are no significant industrial belts immediately surrounding Umm Badr; however, agricultural activities, particularly livestock rearing and rain-fed farming, contribute to localized emissions, including dust from tilling and potential methane release. The lack of substantial infrastructure and limited vehicle traffic currently mitigate some pollution sources, but future growth could alter this dynamic. The prevailing winds, often originating from the west, play a crucial role in dispersing or concentrating airborne particles, a factor heavily influencing the city’s air quality profile.

Umm Badr’s air quality is inextricably linked to its distinct seasonal patterns. The dry season, spanning roughly from November to April, typically witnesses the highest levels of particulate matter. This is primarily due to increased wind speeds, which stir up dust from the surrounding desert and agricultural lands, combined with a lack of rainfall to settle these particles. Temperature inversions, common during the cooler nights of this period, trap pollutants close to the ground, exacerbating the issue. The months of January and February are often the most challenging for air quality. Conversely, the rainy season, from May to October, brings a degree of respite. Rainfall effectively ‘washes’ the atmosphere, removing particulate matter and reducing dust concentrations. However, the onset of the rainy season can also be accompanied by increased humidity, which can affect respiratory health for some individuals. The intensity of rainfall and the frequency of storms significantly influence the duration and extent of air quality improvement. During the transitional months (April and October), wind patterns are often erratic, leading to unpredictable fluctuations in air quality. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should exercise caution during the dry season, limiting outdoor activities during peak dust events. Maintaining indoor air quality through proper ventilation and filtration is also advisable. The relatively low population density currently limits the impact of human-generated emissions, but as the city grows, monitoring and mitigation strategies will become increasingly important.