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Nilanga, a town nestled in the Latur district of Maharashtra, India, occupies a geographically significant position within the Deccan Plateau. Located at approximately 18.1161° N latitude and 76.7525° E longitude, the town’s elevation averages around 570 meters (1870 feet) above sea level, contributing to a generally drier climate. The surrounding landscape is predominantly characterized by undulating plains and agricultural fields, reflecting the region’s strong reliance on farming. Nilanga sits within a broad belt of rain-shadowed terrain, shielded from the full force of the southwest monsoon by the Western Ghats, resulting in relatively low annual rainfall. This aridity influences local weather patterns and, consequently, air quality. The town’s urban character is that of a developing market town, serving as a commercial hub for the surrounding rural communities. While Nilanga itself isn't directly adjacent to major rivers or lakes, it draws water from groundwater sources and smaller irrigation canals supporting agricultural activities. The urban–rural gradient is gradual, with agricultural land closely bordering the town limits. The proximity to agricultural zones, particularly those utilizing fertilizers and pesticides, and the presence of smaller-scale industries (often related to agricultural processing) contribute to localized pollution sources. The plateau’s topography can also lead to stagnant air conditions, especially during cooler months, exacerbating the impact of these emissions. The regional position, far from major industrial centers, means Nilanga’s air quality is more directly influenced by local sources than long-range transport of pollutants.

Nilanga’s air quality experiences a distinct seasonal cycle dictated by the interplay of meteorological factors and local activities. The dry season, spanning roughly from October to May, typically sees the poorest air quality. During these months, lower temperatures frequently lead to temperature inversions, trapping pollutants close to the ground. The lack of rainfall means there's minimal atmospheric cleansing, allowing particulate matter and gaseous pollutants to accumulate. Agricultural burning, a common practice for clearing fields after harvest, significantly contributes to particulate pollution during November and December. The summer months (March-May) bring intense heat, which can increase the formation of ground-level ozone, a respiratory irritant, although this is often tempered by drier conditions. The onset of the monsoon season (June-September) brings a dramatic improvement in air quality. The increased rainfall effectively washes pollutants from the atmosphere, and stronger winds disperse any remaining emissions. Fog, common during the cooler months (December-January), can also exacerbate air quality issues by trapping pollutants. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during agricultural burning periods. Outdoor activities are generally best enjoyed during the monsoon months when air quality is significantly improved. The transition periods (spring and autumn) offer a moderate air quality profile, but vigilance is still advised, especially when agricultural practices intensify.