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Dadhar, nestled in the rugged terrain of Balochistan, Pakistan, occupies a geographically significant position within the Makran Desert region. Located at approximately 29.47°N, 67.65°E and an elevation of around 750 meters, the city’s landscape is dominated by arid plains and scattered hills, characteristic of the broader Balochistan plateau. The surrounding environment is largely rural, transitioning from sparse vegetation and scrubland to more extensive agricultural areas further east, supporting date palm cultivation and limited rain-fed crops. The city’s proximity to the Arabian Sea, roughly 150 kilometers to the south, introduces a maritime influence, though this is tempered by the prevailing continental climate and the distance. Dadhar’s urban character is that of a small, developing town, primarily serving as a local trading hub and agricultural support center. There are no major industrial belts immediately adjacent to Dadhar, though some small-scale processing of agricultural products may occur. The urban–rural gradient is relatively sharp, with the built environment quickly giving way to the expansive desert landscape. This isolation, combined with the prevailing wind patterns which often originate from the west, can trap pollutants within the local area, particularly during periods of low wind speed. The topography, with its surrounding hills, further contributes to this potential for localized air quality challenges, hindering the dispersion of emissions from vehicles and any localized agricultural burning practices. The lack of significant water bodies within immediate proximity also limits natural air purification processes.

Dadhar’s air quality experiences a distinct seasonal cycle dictated by its arid climate and prevailing meteorological conditions. The summer months (May to September) are typically characterized by intense heat and minimal rainfall, leading to stagnant air conditions. High temperatures exacerbate ozone formation, a secondary pollutant, and contribute to a build-up of particulate matter from dust storms common in the region. The lack of significant rainfall during this period prevents natural cleansing of the atmosphere. Autumn (October-November) brings a slight respite with cooler temperatures and occasional dust events, but the air can still be affected by agricultural burning practices as farmers clear fields. Winter (December to February) often sees the most challenging air quality, with frequent temperature inversions trapping pollutants close to the ground. These inversions, where a layer of warm air sits above cooler air, prevent vertical mixing and concentrate emissions. Fog, common during these months, further reduces visibility and exacerbates the impact of pollutants. Spring (March-April) offers the most favorable conditions, with increasing wind speeds and slightly higher humidity, aiding in pollutant dispersion. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during winter and summer months, limiting outdoor activity during peak pollution periods. Avoiding strenuous activity during the hottest parts of the day is also advisable. The dry climate necessitates increased hydration and the use of masks during dust events.