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Sarai Jattān, nestled in the fertile plains of Punjab, India, occupies a geographically significant position within a densely populated and agriculturally intensive region. Located at approximately 31.1797° N, 75.6745° E, the town sits at a relatively low elevation, characteristic of the Indo-Gangetic Plain. This flat terrain, averaging around 230 meters above sea level, contributes to poor air circulation, a key factor influencing local air quality. The surrounding landscape is dominated by expansive agricultural fields, primarily cultivating wheat and rice – crops known for their significant contribution to seasonal biomass burning. Sarai Jattān’s proximity to Ludhiana, a major industrial hub approximately 70 kilometers to the north, introduces a secondary source of pollutants, with industrial emissions occasionally impacting air quality. The urban–rural gradient is gradual; the town itself is a small settlement, but it’s interwoven with agricultural activity, blurring the lines between urban and rural environments. The absence of significant bodies of water nearby, such as major rivers or lakes, further limits natural air purification processes. The prevailing winds, often light and variable, can trap pollutants, especially during cooler months. The region's climate, characterized by hot summers and cool winters, also influences atmospheric stability and the potential for temperature inversions, exacerbating air pollution episodes. The soil composition, rich in alluvial deposits, while beneficial for agriculture, can also contribute to dust generation, particularly during dry periods.

Sarai Jattān’s air quality follows a distinct seasonal pattern dictated by agricultural practices and meteorological conditions. The post-harvest period, typically October through November, witnesses a sharp deterioration in air quality due to widespread crop residue burning. Farmers, seeking a quick and inexpensive method of clearing fields for the next planting season, ignite leftover straw and stubble, releasing substantial quantities of particulate matter and noxious gases. This period consistently presents the most challenging air quality conditions. Winter months (December-February) are often characterized by fog, which traps pollutants close to the ground, further reducing visibility and increasing exposure. Temperature inversions, common during these cold nights, prevent vertical mixing of the air, concentrating pollutants. As spring arrives (March-April), temperatures rise, and wind speeds generally increase, leading to some dispersion of pollutants, offering a slight improvement. However, dust storms, common in this region, can temporarily degrade air quality. The monsoon season (June-September) brings relief, with rainfall washing away pollutants and increased wind speeds facilitating their dispersal. However, heavy rainfall can also lead to waterlogging and the release of methane from flooded fields, a potent greenhouse gas. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the post-harvest and winter months, limiting outdoor activities during peak pollution episodes. Maintaining indoor air quality through ventilation and air purification systems is also advisable during these periods. During the monsoon, while generally better, those with allergies should be mindful of pollen and mold spores.