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Siriāri, nestled in the arid heart of Rajasthan, India, occupies a geographically significant position within the Shekhawati region, a landscape renowned for its historical merchant towns and distinctive architecture. Located at approximately 25.6733° N, 73.8084° E, the town sits at an elevation of roughly 450 meters above sea level, contributing to a generally dry climate. The surrounding terrain is characterized by undulating plains and scattered rocky outcrops, typical of the Thar Desert's fringes. Siriāri’s proximity to the Luni River, though the river's flow is often intermittent, provides a slight moderation of the extreme temperatures and a potential source of localized humidity. The urban character of Siriāri is that of a small, traditional town, largely reliant on agriculture and small-scale industries. The dominant land use is agricultural, with fields of wheat, barley, and pulses extending outwards, creating a gradual urban-rural gradient. Further afield, the broader Shekhawati region hosts some industrial activity, primarily related to textiles and processing of agricultural products, which can contribute to regional air pollution. The prevailing winds, generally from the west and southwest, can transport pollutants from these industrial zones. The relatively flat topography and limited natural barriers exacerbate the potential for pollutant accumulation, particularly during periods of stagnant air. The desert climate, with its low rainfall and high evaporation rates, further influences air quality by impacting particulate matter suspension and dispersion.

Siriāri’s air quality follows a distinct seasonal pattern dictated by the region’s climate. The winter months (November to February) are typically the most challenging. Cold temperatures frequently lead to temperature inversions, where a layer of warm air traps cooler air near the ground, preventing pollutants from dispersing vertically. This, combined with the prevalence of fog, particularly in December and January, significantly reduces visibility and concentrates particulate matter. Agricultural burning, a common practice for clearing fields after harvest, further exacerbates the situation during this period. Spring (March-May) brings a gradual improvement as temperatures rise and winds increase, aiding in pollutant dispersal. However, dust storms, common during this season, can temporarily degrade air quality. The monsoon season (June to September) offers a period of relative respite. Rainfall washes away particulate matter and reduces dust, leading to cleaner air. However, heavy rainfall can also lead to localized flooding and the release of pollutants from waterlogged areas. The post-monsoon period (October) sees a return to drier conditions, with a gradual increase in dust and a potential for localized pollution from agricultural activities. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the winter months, limiting outdoor exposure and wearing appropriate masks. During dust storm events in spring, staying indoors and using air purifiers is recommended. The monsoon provides a window for improved air quality and outdoor activities.