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Bodhan, nestled in the Nizamabad district of Andhra Pradesh, India, occupies a relatively flat terrain at an elevation of approximately 380 meters (1247 feet). Its coordinates (18.6700° N, 77.9000° E) place it within the Deccan Plateau, a large, elevated region characterized by basaltic lava flows. The city is situated along the banks of the Godavari River, a crucial lifeline for the region, influencing local humidity and providing irrigation for surrounding agricultural lands. Bodhan’s urban character is that of a growing regional center, serving as a trade hub for agricultural produce, particularly cotton and turmeric. The surrounding landscape is predominantly agricultural, with extensive cotton fields dominating the plains. While not a major industrial center itself, Bodhan is within reach of industrial activity in nearby cities like Hyderabad, contributing to regional pollution transport. The urban-rural gradient is pronounced, with a clear transition from denser built-up areas in the city center to agricultural fields and smaller villages further out. This proximity to agricultural practices, including potential crop residue burning, and the relatively flat topography, which can hinder dispersion, significantly affect local air quality. The Godavari River, while beneficial, can also trap pollutants during periods of low flow and temperature inversions.

Bodhan experiences a tropical climate with distinct wet and dry seasons. Air quality generally worsens during the dry season, from November to May, as reduced rainfall leads to dust accumulation and increased concentration of pollutants. January and February are often the months with the poorest air quality, exacerbated by cooler temperatures and frequent temperature inversions that trap pollutants near the ground. The monsoon season, from June to October, brings significant relief, with heavy rainfall effectively washing away particulate matter and improving air quality. However, increased humidity can also promote the formation of secondary pollutants. Post-monsoon, in October and November, a slight deterioration can occur due to stagnant air and the burning of agricultural residue after the harvest. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during the dry season, particularly in January and February. During the monsoon, while air quality is better, the risk of waterborne diseases increases, requiring precautions. The prevailing winds, generally from the southwest during the monsoon and shifting to northeast during the dry season, play a crucial role in pollutant transport and dispersion. Fog, common during the cooler months, can further exacerbate pollution levels.