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Betūl Bazār, nestled in the heart of Madhya Pradesh, India, occupies a geographically significant position within the Satpura Hill range's foothills. Its coordinates (21.9050° N, 77.9020° E) place it in a region characterized by undulating terrain, transitioning from the forested hills to the fertile plains of the Narmada River valley. The city’s elevation, averaging around 330 meters (1,083 feet) above sea level, contributes to localized temperature variations and influences atmospheric stability. The surrounding landscape is predominantly rural, comprising agricultural fields – primarily cultivating cotton, soybean, and wheat – interspersed with deciduous forests. This proximity to agricultural zones introduces seasonal biomass burning as a potential pollution source, particularly during harvest periods. Betūl Bazār’s location is approximately 120 kilometers southeast of Bhopal, the state capital, and lies within a developing industrial belt centered around Betūl, known for its coal mines and thermal power plants. This industrial activity, while economically vital, introduces localized air pollutants. The urban–rural gradient is relatively sharp, with the city acting as a commercial and administrative hub for the surrounding agricultural communities. The Narmada River, though not directly adjacent, influences the regional climate and can impact the dispersion of pollutants, particularly during periods of high humidity. Topographically, the hills to the north can create barriers to wind flow, potentially leading to pollutant accumulation within the city during certain weather conditions. The soil composition, largely black cotton soil, also influences dust generation, a contributing factor to particulate matter pollution.

Betūl Bazār experiences a distinct wet and dry season, significantly impacting its air quality profile. The dry season, typically spanning from October to May, is characterized by lower humidity and increased temperatures. This period often witnesses a rise in particulate matter pollution, exacerbated by agricultural burning as farmers clear fields after the harvest. The lack of rainfall and drier conditions contribute to dust resuspension from construction sites and unpaved roads. Temperature inversions, common during the cooler months (November-February), trap pollutants near the ground, worsening air quality. Fog, prevalent in December and January, further restricts atmospheric mixing and concentrates pollutants. The monsoon season, from June to September, brings relief through frequent rainfall, effectively washing away pollutants and significantly improving air quality. However, the onset of the monsoon can initially be accompanied by increased dust due to strong winds. During the summer months (March-May), high temperatures and stagnant air can lead to ozone formation, although this is generally less pronounced than particulate matter issues. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of agricultural burning and fog. Outdoor activities are generally best avoided during the early morning hours in winter and during peak agricultural burning periods. The transition months of October and May represent periods of fluctuating air quality, requiring vigilance and awareness of local conditions.