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Susner, a small city nestled in the Malwa Plateau of Madhya Pradesh, India, occupies a geographically significant position within a region characterized by undulating terrain and a gradual urban–rural gradient. Located at approximately 23.9467° N, 76.0882° E, its elevation of around 425 meters above sea level contributes to localized meteorological patterns that influence air quality. The surrounding landscape is predominantly agricultural, with fertile plains supporting extensive cultivation of wheat, cotton, and pulses – a factor that introduces seasonal particulate matter from agricultural burning. While Susner lacks immediate proximity to major rivers or lakes, the Chambal River flows relatively nearby, impacting regional humidity and potentially influencing atmospheric stability. The city’s position within the broader industrial belt of Madhya Pradesh, though not directly adjacent to heavy industry, means it experiences secondary impacts from emissions originating in larger urban centers like Indore and Bhopal. The Malwa Plateau's generally dry climate, coupled with the prevalence of dust-prone soils, exacerbates particulate pollution, particularly during drier periods. The urban character of Susner is evolving, transitioning from a primarily agricultural service center to a small industrial and commercial hub, leading to increased vehicular traffic and localized pollution sources. The plateau's topography can trap pollutants, especially during periods of low wind speed, creating conditions conducive to poor air quality episodes. The surrounding rural areas, while providing agricultural products, also contribute to seasonal biomass burning, a significant factor in Susner's air quality profile.

Susner's air quality follows a distinct seasonal pattern dictated by the region's monsoon climate. The pre-monsoon months (March-May) typically witness the poorest air quality, characterized by elevated particulate matter concentrations. This is largely attributable to agricultural residue burning – farmers clearing fields after harvest – combined with rising temperatures and decreasing wind speeds, which promote pollutant accumulation. Temperature inversions, common during this period, trap pollutants near the ground. The monsoon season (June-September) brings a welcome respite, with increased rainfall and stronger winds effectively flushing out pollutants. Humidity levels also rise, which can affect the chemical composition of airborne particles. Post-monsoon (October-November) sees a gradual return to poorer air quality as agricultural burning resumes, though often less intense than in the pre-monsoon period. Winter months (December-February) are generally cooler, with frequent fog episodes. While temperatures are lower, fog traps pollutants, leading to periods of reduced visibility and potentially elevated localized pollution. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the pre-monsoon and post-monsoon seasons, limiting outdoor exertion and wearing appropriate masks. During foggy winter days, minimizing outdoor activities is advisable. The monsoon months offer the most favorable conditions for outdoor recreation, though pollen allergies may be a concern for some. Understanding these seasonal variations is crucial for managing personal exposure and advocating for effective air quality mitigation strategies.