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Al Mazār ash Shamālī, nestled within the Irbid Governorate of northern Jordan, occupies a geographically significant position at approximately 32.47°N, 35.79°E. The city’s terrain is characterized by rolling hills and valleys, typical of the northern Jordanian highlands, with an elevation averaging around 600 meters above sea level. This elevation contributes to a cooler climate compared to lower-lying regions of Jordan, but also creates conditions conducive to temperature inversions, a key factor influencing air quality. The surrounding landscape is a mosaic of agricultural land, primarily olive groves and vineyards, interspersed with pockets of natural vegetation. Al Mazār ash Shamālī sits on the edge of an urban–rural gradient, transitioning from the more densely populated areas of Irbid city to the quieter agricultural communities of the north. While not directly adjacent to major bodies of water, the nearby Jordan River basin exerts a regional influence on weather patterns. Industrial activity in the immediate vicinity is limited, with the primary economic drivers being agriculture and small-scale local businesses. However, Irbid city, a significant industrial and commercial hub, lies within a reasonable commuting distance, potentially introducing pollutants transported by prevailing winds. The city’s location within a basin can trap pollutants, particularly during periods of calm weather, exacerbating local air quality challenges. The surrounding agricultural practices, including fertilizer use and seasonal burning of crop residues (though increasingly regulated), can also contribute to localized air pollution episodes.

Al Mazār ash Shamālī experiences a distinct Mediterranean climate, characterized by warm, dry summers and cool, wet winters. Air quality patterns are strongly influenced by these seasonal shifts. During the summer months (June-August), high temperatures and reduced precipitation lead to increased photochemical smog formation. Solar radiation drives reactions between pollutants, creating ozone and other secondary pollutants. The lack of significant rainfall and prevailing dry winds contribute to pollutant accumulation. Autumn (September-November) often sees a slight improvement as temperatures cool, but agricultural burning practices can introduce particulate matter into the air, particularly during harvest season. Winter (December-February) typically brings the best air quality due to increased rainfall, which naturally cleanses the atmosphere, and stronger winds that disperse pollutants. However, temperature inversions are more frequent during winter nights, trapping pollutants near the ground and creating localized episodes of poor air quality. Spring (March-May) is a transitional period, with variable air quality influenced by both rainfall and increasing temperatures. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the summer months and on days with stagnant air or visible haze. Avoiding strenuous outdoor activity during peak sunlight hours and monitoring local air quality reports are advisable. The agricultural cycle dictates periods of heightened particulate matter, so awareness during harvest times is crucial. Maintaining indoor air quality through proper ventilation and air filtration can also mitigate exposure.