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Nagpur, positioned at the geographical heart of India in Maharashtra's Vidarbha region, occupies a strategic location that profoundly influences its air quality patterns. The city sits on the Deccan Plateau at approximately 310 meters above sea level, creating a basin-like topography that traps pollutants. This urban center is surrounded by agricultural zones that transition into forested areas, particularly to the south and east, creating a distinct urban-rural gradient. Nagpur's location near major industrial belts—most notably the Maharashtra Industrial Development Corporation (MIDC) areas and Butibori industrial zone just 20 kilometers southwest—means industrial emissions constantly drift toward the city center. The region's dry, undulating terrain lacks significant water bodies to moderate pollution, with only small rivers like Nag and Pili flowing through. As the 'Orange City' and major trade hub, Nagpur's urban character combines dense commercial districts with sprawling residential areas, all connected by road networks that generate substantial vehicle exhaust. The city's position as a transportation crossroads for central India means heavy freight traffic contributes significantly to particulate matter levels. This geographic context creates a perfect storm where industrial emissions from the southwest combine with local vehicle pollution and construction dust, all trapped by the plateau's topography and exacerbated by the region's seasonal weather patterns.

Nagpur's air quality follows a dramatic seasonal rhythm dictated by its tropical wet-and-dry climate. During winter (November-February), pollution reaches hazardous peaks as cold temperatures create persistent temperature inversions that trap pollutants close to the ground. These months see minimal wind movement, allowing industrial emissions, vehicle exhaust, and agricultural burning residue from surrounding farmlands to accumulate. Dense fog frequently forms, mixing with pollutants to create toxic smog that reduces visibility and respiratory health. Sensitive groups should avoid outdoor activities during morning hours in these months. The pre-monsoon period (March-May) brings extreme heat that photochemically transforms pollutants into ground-level ozone, though occasional thunderstorms provide temporary cleansing. The monsoon (June-September) offers the cleanest air as heavy rains wash away particulate matter and winds disperse pollutants—this is the optimal time for outdoor activities. Post-monsoon (October) sees a rapid deterioration as rains cease but temperatures haven't yet dropped enough to break inversion layers, creating a transition to the hazardous winter period. Throughout the year, construction dust remains a constant concern in this rapidly developing city, while thermal power plant emissions provide a steady baseline of pollution.