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Tanuku is situated in the fertile heart of the West Godavari district in Andhra Pradesh, characterized by the expansive, low-lying alluvial plains of the Godavari river delta. This strategic positioning creates a landscape dominated by lush agricultural stretches, primarily paddy and sugarcane fields, which define the urban-rural gradient of the town. The terrain is remarkably flat, with negligible elevation changes that allow for the unimpeded movement of surface winds, yet this same flatness can lead to the stagnation of pollutants during periods of low atmospheric instability. The city's proximity to an intricate network of canals and the broader Godavari river system introduces significant humidity into the local microclimate, which often interacts with particulate matter to form dense haze. Urban character is defined by a blend of residential clusters and industrial pockets, specifically the presence of rice mills and textile units that punctuate the landscape. These industrial belts, coupled with the heavy reliance on agricultural activities, create a unique emission profile where organic dust and industrial fumes converge. Because Tanuku lacks significant topographical barriers like hills or mountains, it does not suffer from valley-trapped smog, but it is susceptible to the regional transport of pollutants from larger industrial corridors in Andhra Pradesh. The interplay between the humid coastal air and the localized combustion of biomass from surrounding farms significantly influences the town's overall atmospheric composition and daily air quality. The town exists as a node where agrarian traditions meet urban expansion.

Tanuku experiences a tropical climate where air quality is dictated by the rhythmic arrival of the monsoons and the oppressive heat of summer. During the hot dry season from March to May, high temperatures and intense solar radiation catalyze the formation of ground-level ozone, while suspended dust from dried agricultural lands elevates particulate levels. This period requires sensitive groups, particularly those with asthma, to limit midday outdoor excursions. As the southwest monsoon arrives in June, the atmosphere undergoes a dramatic cleansing process. The heavy monsoon rains effectively scrub the air of pollutants, leading to the cleanest air of the year through wet deposition. However, the subsequent transition into the post-monsoon and winter months from November to February introduces new challenges. During these cooler months, temperature inversions frequently occur, trapping pollutants closer to the ground. The combination of morning fog and the seasonal burning of crop residues in the surrounding West Godavari plains leads to peak pollution episodes. This creates a stagnant layer of smog that can aggravate respiratory conditions. Consequently, early morning walks are discouraged for the elderly and children during December and January. The spring transition sees a gradual rise in wind speeds, which helps disperse accumulated pollutants before the summer cycle begins again. Throughout the year, the high humidity levels remain high, which often traps fine particulates in the air, making the use of protective masks advisable during peak agricultural burning windows to ensure long-term pulmonary health and wellness.