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Pernamitta, nestled in the Kurnool district of Andhra Pradesh, India, occupies a geographically significant position within the Deccan Plateau. Located at approximately 15.5333° N latitude and 80.0000° E longitude, the town’s terrain is characterized by gently undulating hills and valleys, typical of the region's granite bedrock. The elevation averages around 350 meters above sea level, contributing to a relatively stable atmospheric layer, though susceptible to temperature inversions under specific conditions. Pernamitta’s surrounding landscape is predominantly rural, comprising agricultural fields cultivating crops like groundnuts, cotton, and pulses, interspersed with scrubland and rocky outcrops. The town sits on the edge of an urban–rural gradient, experiencing a gradual transition from agricultural activity to more concentrated settlement. While not directly adjacent to major rivers, the town draws water from local reservoirs and groundwater sources, influencing regional humidity levels. The proximity to the industrial belt centered around Kurnool, approximately 60 kilometers away, introduces a potential source of pollutants transported by prevailing winds. The Deccan Plateau's generally dry climate, coupled with the plateau's topography, can trap pollutants, particularly during periods of low wind speed. The local geology, with its exposed granite, can also contribute to particulate matter in the air, especially during dry seasons when dust storms are possible. Pernamitta’s relatively small size (population 17,041) means that localized emissions from vehicles and small-scale industries are the primary contributors to its air quality profile, though regional influences are significant.

Pernamitta’s air quality follows a distinct seasonal pattern dictated by the region’s tropical climate, exhibiting a clear wet and dry season cycle. The dry season, typically spanning from October to May, is characterized by lower rainfall and increased temperatures. This period often sees a rise in particulate matter concentrations due to reduced precipitation to wash pollutants from the atmosphere and increased dust generation from agricultural activities and unpaved roads. Temperature inversions, common during the cooler nights of November to February, trap pollutants near the ground, exacerbating the situation. The monsoon season, from June to September, brings relief with frequent rainfall, effectively cleansing the air and significantly reducing pollution levels. However, the onset of the monsoon can initially bring increased humidity and, occasionally, dust storms associated with shifting weather patterns. March and April are particularly challenging months, with high temperatures, low humidity, and often stagnant air, creating conditions ripe for pollution accumulation. During these months, sensitive groups like children, the elderly, and individuals with respiratory conditions should limit outdoor exertion, especially during peak daylight hours. The post-monsoon period (October) can also experience elevated particulate levels as agricultural residue burning commences. Overall, the months of December and January generally offer the most favourable air quality conditions, although vigilance is still advised due to the potential for temperature inversions. Maintaining indoor air quality through ventilation and air purification can be beneficial throughout the year, particularly during periods of elevated pollution.