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Godāwari̇̄ is situated within the fertile Terai plains of Nepal's Sudūrpashchim Province, serving as a vital nodal point between the rugged Himalayan foothills and the sprawling lowlands. This geographic positioning creates a unique atmospheric environment where the flat terrain allows for the accumulation of pollutants, as there are few natural topographic barriers to disperse air masses moving horizontally. The city is characterized by a gradual urban-rural gradient, where residential clusters are interspersed with expansive agricultural zones, primarily dedicated to cereal crops and sugarcane. Its proximity to the border of India ensures that it is heavily influenced by regional air currents, often importing particulate matter from the densely populated industrial and agricultural belts of the neighboring Indian states. The surrounding landscape is dominated by alluvial soils and seasonal river systems that modulate local humidity levels, which in turn influences the suspension of aerosols. Elevation remains relatively low, making the area susceptible to temperature inversions, particularly during the winter months, which trap pollutants close to the ground. The lack of significant industrialization within the city limits means that the primary local pollution sources are domestic biomass combustion and road dust, though the broader regional context introduces a complex cocktail of nitrates and sulfates. Consequently, the air quality is a reflection of both local land-use patterns and the larger transboundary flow of pollutants across the Indo-Gangetic Plain, creating a challenging environment for atmospheric clarity and long-term public respiratory health for the diverse inhabitants of this specific Terai region within the far western province.

Air quality in Godāwari̇̄ follows a stark seasonal rhythm dictated by the South Asian monsoon and regional agricultural cycles. During the summer monsoon, from June to September, the air is at its cleanest; heavy rainfall effectively washes particulate matter from the atmosphere, and strong winds disperse lingering pollutants. This period is ideal for outdoor activities, although high humidity persists. As autumn arrives in October and November, air quality deteriorates rapidly. This decline is driven by the widespread practice of stubble burning in surrounding agricultural fields, which releases massive quantities of smoke and fine particulate matter into the stagnant air. Winter, from December to February, represents the most hazardous period. Cold, dense air settles over the Terai plains, creating temperature inversions that trap domestic smoke and transboundary pollutants close to the surface. Thick winter fog often exacerbates this effect, leading to prolonged periods of poor visibility and hazardous air. Sensitive groups, including children and the elderly, should limit outdoor exertion during these months and consider using air filtration. The pre-monsoon spring, from March to May, introduces a different challenge: wind-blown dust. As the land dries, coarse particles are lifted from the unpaved roads and fields, increasing the concentration of suspended minerals. While less chemically complex than winter smog, this dust can trigger asthma and allergies. Consequently, the window for the healthiest outdoor exposure remains the rainy season, while winter requires significant health precautions, including the use of N95 masks to filter out the dangerous fine particulate matter that permeates the atmosphere.