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Selu, a municipality in Maharashtra’s Parbhani district, occupies a central position within the state’s Deccan Plateau. Located at approximately 19.4551°N latitude and 76.4372°E longitude, the city sits at an elevation of around 430 meters (1411 feet). This plateau setting contributes to a relatively dry climate and influences local air circulation patterns. The surrounding landscape is predominantly agricultural, characterized by cotton, soybean, and jowar cultivation, typical of the Marathwada region. Selu isn’t directly adjacent to major bodies of water, though smaller rivers and seasonal streams dissect the terrain. The urban-rural gradient is pronounced; Selu serves as a market and service center for numerous surrounding villages. While not a major industrial hub itself, its proximity to larger industrial areas in Aurangabad and Nashik means it can experience pollutant transport. The terrain is generally undulating, with gentle slopes, which can trap pollutants during periods of low wind speed. Dust from agricultural activities and unpaved roads contributes significantly to particulate matter levels. The city’s location within a rain shadow area further exacerbates dryness and potential for dust suspension, impacting baseline air quality. Understanding these geographical factors is crucial for assessing and mitigating Selu’s air pollution challenges.

Selu experiences a distinct seasonal air quality pattern dictated by the monsoon and post-monsoon periods. The pre-monsoon months of March to May are typically the worst for air quality. Rising temperatures and dry winds stir up dust from agricultural lands and construction, leading to increased particulate matter. Temperature inversions, common during calm evenings, trap pollutants near the ground. The arrival of the monsoon in June brings a temporary respite, as rainfall washes away pollutants and increases humidity, suppressing dust. However, increased traffic congestion due to monsoon-related disruptions can locally elevate emissions. Post-monsoon, from October to November, sees a gradual deterioration as agricultural burning increases following the harvest. This practice releases significant amounts of smoke and particulate matter. Winter months (December-February) often experience cooler temperatures and calmer winds, leading to pollutant build-up, particularly in the early mornings. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during March-May and October-November. Monitoring wind patterns and avoiding peak agricultural burning periods are key to protecting public health. Fog can also exacerbate pollution during winter mornings.