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Amman, the capital of Jordan, occupies a strategic position in West Asia, situated on a series of rolling hills in the country's northwestern highlands at an elevation of approximately 700 to 1,100 meters above sea level. This elevated terrain, part of the ancient Ammonite kingdom's heartland, creates a distinctive urban character where neighborhoods cascade across valleys and ridges, contributing to complex air circulation patterns. The city lies about 80 kilometers east of the Jordan River and the Dead Sea, but its semi-arid climate means no significant bodies of water moderate its air quality locally. Amman is surrounded by arid landscapes to the east and south, including the vast Eastern Desert, which serves as a source of frequent dust storms, while to the west lie more fertile agricultural zones in the Jordan Valley. The urban-rural gradient is sharp, with dense central districts giving way rapidly to sparse settlements and then open desert. This geography exacerbates air pollution through temperature inversions that trap vehicle exhaust and industrial emissions in the bowl-like valleys, while the lack of precipitation allows particulate matter from construction, road dust, and cement factories to accumulate. The city's position along major transport corridors intensifies traffic pollution, and its growth has encroached on natural dust sources, creating a feedback loop where urban expansion and desertification jointly degrade air quality.

Amman's air quality follows a distinct seasonal rhythm shaped by its semi-arid climate. In winter, from November through February, pollution peaks due to a combination of factors: temperature inversions trap vehicle exhaust and emissions from residential heating in the valleys, while calm winds and frequent fog reduce dispersion. This period sees the highest levels of particulate matter, making outdoor activities risky, especially for sensitive groups like children, the elderly, and those with respiratory conditions, who should limit exposure and use air purifiers indoors. Spring, particularly March, continues this trend as dust storms from the eastern desert sweep through, adding coarse particles to the mix. By late spring and summer, from April to September, conditions improve as stronger winds and higher temperatures enhance atmospheric mixing, though extreme heat can intensify ozone formation from vehicle emissions. Summer also brings occasional dust storms, but overall air quality is more favorable for outdoor activities. Autumn, from October onward, marks a transition back to poorer conditions as temperatures drop and inversions reestablish. To minimize health risks, visitors and residents should plan strenuous outdoor activities for the summer months, avoid peak pollution periods in winter, and monitor local forecasts for dust storm warnings year-round.