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Guntūr, situated in the coastal plains of Andhra Pradesh in southeastern India, occupies a strategic position in the fertile Krishna River delta region. The city lies approximately 40 kilometers inland from the Bay of Bengal, at a modest elevation of around 30 meters above sea level, creating a flat terrain that influences local air circulation patterns. This urban center serves as the administrative heart of Guntūr district and functions as a major commercial hub for the surrounding agricultural belt, known for its extensive cultivation of chili peppers, cotton, and tobacco. The city's geography places it within the broader industrial corridor connecting Vijayawada to the north and the port city of Machilipatnam to the east, contributing to mixed urban-rural emissions. Guntūr's air quality is particularly affected by its location in this agricultural-intensive zone, where seasonal crop residue burning, especially after harvest periods, releases substantial particulate matter. The city's proximity to the coast provides some moderating influence through sea breezes, but the inland position limits their full cleansing effect. Urban expansion has created a distinct gradient from the densely built-up core to peri-urban agricultural lands, where dust from unpaved roads combines with vehicular emissions and occasional industrial discharges from local textile and food processing units. The flat topography minimizes natural ventilation, allowing pollutants to accumulate during calm weather conditions, while the Krishna River basin's humidity can interact with emissions to form secondary pollutants.

Guntūr's air quality follows a distinct seasonal rhythm shaped by the region's tropical climate and agricultural calendar. During the hot summer months from March to May, temperatures often exceed 40°C, creating thermal inversions that trap pollutants near the surface, while increased energy demand for cooling and agricultural preparation activities elevate emissions. The southwest monsoon arrives in June, bringing substantial rainfall through September that effectively scrubs the atmosphere, resulting in the year's cleanest air—this period offers optimal conditions for outdoor activities. Post-monsoon months of October and November see a concerning deterioration as agricultural burning peaks after the kharif harvest, combining with festive fireworks during Diwali to create hazardous smoke episodes; sensitive groups should minimize exposure during these weeks. Winter from December to February brings cooler temperatures and frequent morning fog, which mixes with pollutants to form dense smog, particularly during temperature inversions that prevent vertical dispersion. While industrial and vehicular emissions remain relatively constant year-round, the interplay of meteorological factors—monsoon cleansing, inversion trapping, and agricultural burning cycles—creates pronounced seasonal variations. Residents with respiratory conditions should be particularly cautious during late autumn and winter mornings when pollution concentrations peak, while planning outdoor exercise for monsoon months when natural cleansing occurs. The city's coastal proximity provides some relief through occasional sea breezes, but these are least effective during the stagnant conditions of winter and early summer.