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Risali is situated in the central Indian state of Chhattisgarh, positioned at coordinates 21.2167°N, 81.4500°E within the expansive Chhattisgarh Plain. This urban settlement lies at an elevation of approximately 290 meters above sea level, nestled in the flat to gently undulating terrain characteristic of the region's sedimentary basin. Geographically, Risali forms part of the larger Bhilai-Durg-Raipur industrial corridor, one of India's most significant steel-producing regions, placing it directly within an intense manufacturing landscape. The city's proximity to the Bhilai Steel Plant—just kilometers away—creates a distinct urban-industrial gradient where residential areas blend seamlessly with heavy industry. Surrounding landscapes include agricultural zones growing rice, maize, and pulses, though these are increasingly giving way to urban expansion. No major rivers flow directly through Risali, though the Sheonath River lies to the northwest, providing limited moderating influence on local climate. The city's location in this industrial belt fundamentally shapes its air quality, as prevailing winds from the northeast during winter months trap industrial emissions, vehicle exhaust, and construction dust within the shallow atmospheric boundary layer of the plain. The absence of significant topographic features means pollutants disperse poorly, particularly during the cooler months when temperature inversions become frequent. Urban development patterns with dense, unplanned growth further exacerbate pollution retention, creating a challenging environmental scenario for this industrial satellite city.

Risali's air quality follows a pronounced seasonal rhythm dictated by its tropical wet-and-dry climate and industrial activity patterns. During winter (November-February), pollution peaks dramatically as cooler temperatures create persistent temperature inversions that trap emissions from the Bhilai Steel Plant, vehicle exhaust, and dust near the surface. Calm winds and frequent morning fog further inhibit dispersion, making these months particularly hazardous for outdoor activity, especially for sensitive groups like children, elderly residents, and those with respiratory conditions. Spring (March-May) brings gradually improving conditions as temperatures rise and atmospheric mixing increases, though extreme heat events can occasionally elevate ozone levels. The monsoon season (June-September) offers the cleanest air as heavy rainfall effectively scrubs pollutants from the atmosphere, while strong southwesterly winds facilitate dispersion—this period represents the optimal time for outdoor activities. Post-monsoon (October) sees a rapid deterioration as industrial activity resumes fully after the rains, emissions accumulate, and meteorological conditions begin favoring pollution buildup. Sensitive groups should limit outdoor exposure during morning hours in peak pollution months, utilize air purifiers indoors, and schedule essential activities for afternoons when mixing is slightly better. The transition months of March and October offer moderate conditions, while the monsoon provides the healthiest outdoor environment despite occasional thunderstorms.