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Situated on the high, arid plateau of the Jordanian highlands, Sahab serves as a vital industrial anchor southeast of Amman. At an elevation of approximately 850 meters above sea level, the city is defined by its rugged, semi-desert topography, characterized by rolling limestone hills and sparse vegetation. Its geographic positioning within the Amman Governorate places it at a critical intersection of regional logistics, being home to the Sahab Industrial Estate, which stands as one of the largest manufacturing hubs in the country. This industrial concentration creates a distinct urban character, where sprawling warehouses and heavy manufacturing facilities dominate the skyline, contrasting sharply with the traditional, low-density residential expansion radiating outward. The lack of significant natural water bodies or dense forest cover means that Sahab is highly susceptible to the movement of air masses across the plateau. The regional climate is Mediterranean-continental, yet the local air quality is heavily influenced by the city’s role as an industrial powerhouse and its proximity to the major transport arteries connecting Jordan to Saudi Arabia and Iraq. The terrain, mostly open and exposed, facilitates the rapid dispersal of localized emissions but also makes the area prone to dust transport during high-wind events. As the urban-rural gradient blurs, the interaction between industrial output and the prevailing westerly winds dictates the dispersion patterns of particulate matter. Ultimately, Sahab’s geography is a study in industrial necessity meeting the harsh environmental realities of the Levant, where topographical exposure and economic activity combine to shape the local atmospheric experience.

The seasonal air quality in Sahab is governed by the interplay between the Mediterranean climate and the arid desert influences of the Arabian Peninsula. During the long, dry summer months, spanning June through September, the city experiences peak pollution levels. High temperatures drive intense solar radiation, facilitating the photochemical reaction of nitrogen oxides and volatile organic compounds into ground-level ozone. Furthermore, stagnant air masses and frequent temperature inversions during the nights prevent the vertical mixing of pollutants, trapping industrial emissions near the ground. Summer is also the season for the khamsin, a hot, dry, dust-laden wind that sweeps across the plateau, causing spikes in coarse particulate matter (PM10) that significantly impair visibility and respiratory health. Conversely, the winter season, lasting from December to March, brings cooler, more unstable conditions. While the cold air can occasionally trap pollutants during stable, high-pressure events, the frequent passage of mid-latitude cyclones provides much-needed ventilation, scrubbing the atmosphere through occasional rainfall. Spring and autumn serve as transitional periods; however, spring is particularly challenging due to the increased frequency of dust storms emanating from the desert regions. For sensitive groups, including those with asthma or cardiovascular conditions, late summer and mid-spring represent the most hazardous times for outdoor activity. It is advisable to minimize physical exertion during the midday heat in August and during dust-heavy days in April. By favoring the winter months when the atmosphere is periodically cleansed by convective rains, residents can mitigate the cumulative health impacts of the region’s distinct industrial and meteorological cycle.