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Elesvaram, a municipality in Andhra Pradesh, India, sits at coordinates 17.2833°N, 82.1000°E, nestled within the East Godavari district. The city’s geography is characterised by relatively flat, fertile plains typical of the Krishna-Godavari Delta region. This deltaic landscape, formed by the sediment deposition of the Godavari River and its tributaries, contributes to the rich agricultural productivity of the surrounding area. The terrain is generally low-lying, with an elevation hovering around sea level, making it susceptible to localised flooding during heavy rainfall events. Elesvaram’s proximity to the Bay of Bengal introduces a humid, tropical climate and influences wind patterns. The urban-rural gradient is pronounced; the city is a hub for surrounding agricultural villages, serving as a market and service centre. While not a major industrial centre itself, the region experiences industrial activity related to rice milling and food processing, alongside aquaculture. This concentration of agricultural and light industrial activity, coupled with the flat terrain, can contribute to localised air pollution, particularly from dust, biomass burning (agricultural residue), and emissions from small-scale industries. The lack of significant topographical features hinders natural dispersion of pollutants, exacerbating air quality challenges.

Elesvaram experiences a tropical climate with distinct wet and dry seasons heavily influencing air quality. The post-monsoon season (October-November) often sees a temporary improvement in air quality as rainfall washes away accumulated pollutants. However, this is followed by the dry season (December-May), when stagnant air masses and lower humidity lead to increased concentrations of particulate matter, especially from dust and agricultural burning. January and February are typically the months with the poorest air quality. The summer months (March-May) bring high temperatures and potential for temperature inversions, trapping pollutants near the ground. The southwest monsoon (June-September) provides significant relief, with heavy rainfall effectively cleansing the atmosphere. However, increased humidity can also promote the formation of secondary pollutants. During the monsoon, localised flooding can stir up sediment and contribute to microbial air pollution. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during the dry season, particularly January-May. Wearing masks and avoiding peak traffic hours are recommended. Monitoring weather forecasts for wind conditions is crucial, as calm days exacerbate pollution build-up.