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Damascus, the capital of Syria, is situated in the southwestern part of the country within the Dimashq Governorate, positioned at coordinates 33.5020°N, 36.2981°E in West Asia. Nestled in a semi-arid basin at an elevation of approximately 680 meters (2,230 feet) above sea level, the city is surrounded by the Anti-Lebanon Mountains to the west and the Syrian Desert to the east, creating a topographical bowl that significantly influences air quality. This basin effect traps pollutants, as the encircling mountains inhibit wind dispersion, leading to frequent temperature inversions that concentrate emissions near ground level. The city lies along the Barada River, which historically supported the Ghouta oasis—an extensive agricultural zone to the east and south that has been impacted by urban expansion and conflict, altering local pollution dynamics. Damascus's urban character blends ancient historic districts with modern developments, creating a dense urban core where vehicular traffic, residential heating, and industrial activities contribute to air pollution. Proximity to industrial belts in surrounding suburbs, such as those in rural-urban fringe areas, adds to particulate matter and chemical emissions. The regional position in a conflict-affected zone has further complicated pollution sources, with damage to infrastructure and reduced environmental monitoring. The urban-rural gradient shows higher pollution in central areas due to congestion, while agricultural zones contribute dust and biomass burning during certain seasons. Overall, Damascus's geography as a mountain-ringed basin exacerbates air quality issues by limiting natural ventilation and trapping pollutants from diverse urban and peri-urban sources.

In Damascus, air quality fluctuates seasonally due to meteorological patterns and human activities, with pollution peaks typically occurring in winter and summer. During winter (December to February), cold temperatures increase the use of heating fuels like diesel and wood, leading to higher emissions of particulate matter and sulfur dioxide. Temperature inversions are common in the basin, trapping pollutants near the surface and reducing dispersion, which can result in hazy conditions and elevated pollution levels. Sensitive groups, such as those with respiratory or cardiovascular conditions, should limit outdoor activities during calm, cold mornings when inversions are strongest. Spring (March to May) often brings improved air quality as increased wind speeds from the west help disperse pollutants, though dust storms from the Syrian Desert can occasionally spike particulate levels, making it a favourable time for outdoor activities with precautions during windy days. Summer (June to August) sees high temperatures that promote ozone formation from vehicle and industrial emissions, with peak pollution in July and August due to intense sunlight and stagnant air; vulnerable individuals should avoid strenuous outdoor exertion during midday heat. Autumn (September to November) generally offers moderate conditions as temperatures cool and winds pick up, though early autumn can still experience residual summer pollution. Throughout the year, weather hazards like fog are minimal, but the lack of monsoon or significant precipitation exacerbates pollutant accumulation. For health guidance, sensitive groups should monitor local air quality reports, use masks during high-pollution episodes, and plan outdoor activities for mornings or evenings when pollution levels are lower.