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Turaiyūr, nestled in the Thanjavur district of Tamil Nadu, India, occupies a geographically significant position within the Kaveri Delta, a fertile and densely populated region. Located at approximately 11.1497° N latitude and 78.5987° E longitude, the town’s elevation is relatively low, averaging around 15 meters above sea level, characteristic of deltaic plains. The surrounding landscape is overwhelmingly agricultural, dominated by rice paddies and interspersed with coconut groves and other crops vital to the region’s economy. This proximity to intensive agricultural practices contributes to localized air quality concerns, particularly related to biomass burning during harvest seasons. The town sits near the Vennar River, a tributary of the Kaveri, which influences local humidity and temperature patterns. While the Kaveri River itself isn't immediately adjacent, its influence extends across the delta. Turaiyūr’s urban character is that of a developing market town, serving the surrounding rural communities. The urban–rural gradient is gradual, with agricultural land quickly transitioning to residential and commercial areas within the town limits. There are no major industrial belts directly bordering Turaiyūr, though smaller-scale agricultural processing units and workshops are present. The flat terrain and low elevation can exacerbate air pollution episodes, limiting atmospheric dispersion and potentially trapping pollutants, especially during periods of stagnant air. The delta's geography, while incredibly productive agriculturally, presents challenges for air quality management due to its susceptibility to trapping pollutants and the prevalence of agricultural emissions.

Turaiyūr’s tropical climate dictates a distinct wet and dry seasonal pattern, profoundly impacting air quality. The southwest monsoon, typically from June to September, brings substantial rainfall, generally leading to improved air quality as pollutants are washed from the atmosphere. However, the monsoon season also sees increased humidity, which can trap certain pollutants closer to the ground, particularly particulate matter. The post-monsoon period (October-November) is often characterized by agricultural burning as farmers clear fields for the next planting season. This biomass burning is a significant contributor to elevated particulate matter concentrations, creating periods of poor air quality. The dry season (December-May) is generally warmer, with lower rainfall. Temperature inversions, common during the cooler months (December-February), can trap pollutants near the surface, leading to localized air quality degradation. Fog, frequently occurring during these months, further reduces visibility and can exacerbate the effects of trapped pollutants. The months of October and November are particularly challenging due to the combined effects of agricultural burning and potentially stagnant air. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during these periods and when fog is present. During the monsoon months, while overall air quality tends to be better, those with allergies may experience increased discomfort due to high humidity. Maintaining indoor air quality through ventilation and air purification can be beneficial throughout the year, especially during periods of elevated pollution.