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Titara, a small town nestled in the state of Bihar, India, occupies a geographically significant position within the fertile Gangetic plains. Located at approximately 26.2311° N, 84.2444° E, its coordinates place it squarely within a region characterized by alluvial soil and a relatively flat terrain, typical of the Indo-Gangetic Plain. The town’s elevation is modest, contributing to a tendency for pollutants to accumulate, particularly during periods of atmospheric stability. Titara’s surrounding landscape is predominantly agricultural, with extensive fields of rice, wheat, and maize dominating the rural areas. This agricultural activity, while vital to the regional economy, contributes to air pollution through the burning of crop residue after harvest, a common practice in Bihar. The urban–rural gradient around Titara is gradual, with small villages and agricultural hamlets blending seamlessly into the town’s periphery. While Titara itself lacks major industrial zones within its immediate vicinity, it benefits from, and is potentially impacted by, industrial belts located further west, towards Patna and other larger urban centers. The proximity to the Ganges River, though providing a crucial water source, can also influence local weather patterns and, under certain conditions, contribute to humidity and fog, which exacerbate air quality issues by trapping pollutants. The flat topography and prevailing wind patterns often lead to a stagnation of air, especially during cooler months, hindering the dispersion of pollutants released from agricultural practices and distant industrial sources.

Titara’s air quality experiences a distinct seasonal cycle dictated by the region’s monsoon climate. The monsoon season, typically spanning from June to September, brings relief from accumulated pollutants as heavy rainfall washes away particulate matter and strong winds disperse gaseous pollutants. However, the preceding pre-monsoon months (April-May) often witness a significant deterioration in air quality. High temperatures, low wind speeds, and frequent temperature inversions trap pollutants close to the ground, leading to increased concentrations. Agricultural burning is at its peak during this period, further compounding the problem. The post-monsoon season (October-November) is characterized by cooler temperatures and calmer winds, which, combined with lingering agricultural smoke, can result in periods of poor air quality. Fog is common during these months, further reducing visibility and trapping pollutants. Winter months (December-February) are generally the most challenging, with persistent fog and temperature inversions creating stagnant air conditions. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during these periods, particularly in the early morning and late evening when fog is densest. During the monsoon, while overall air quality improves, heavy rainfall can still lead to localized flooding and the release of mold spores, potentially affecting indoor air quality. Throughout the year, awareness of agricultural burning practices and their impact on air quality is crucial for public health.