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Nurkot, a small city nestled in the Punjab province of Pakistan (32.2017° N, 75.1186° E), occupies a geographically significant position within the broader Indo-Gangetic Plain. Its relatively low elevation, approximately 225 meters above sea level, contributes to a basin-like topography that can trap pollutants. The surrounding landscape is predominantly agricultural, characterized by fertile plains cultivated with wheat, rice, and cotton – a major source of particulate matter from seasonal burning practices. To the west, the landscape gradually transitions into more arid regions, influencing regional wind patterns. Nurkot’s proximity to larger urban centers in Punjab, such as Lahore, means it’s susceptible to the transboundary transport of air pollutants. The urban–rural gradient is relatively sharp; the city itself is compact, with a clear delineation between built-up areas and the surrounding agricultural fields. While Nurkot lacks direct access to major rivers, groundwater resources are vital for irrigation, and the region experiences seasonal flooding, which can temporarily exacerbate air quality issues by mobilizing dust and pollutants. The flat terrain and enclosed nature of the plain, combined with agricultural activity and regional industrial zones, create conditions that can lead to stagnant air masses and the accumulation of pollutants, particularly during certain times of the year. The city’s small size doesn’t preclude it from experiencing significant air quality challenges due to these broader regional factors.

Nurkot’s air quality follows a distinct seasonal pattern dictated by the region’s climate and agricultural practices. The winter months (November to February) are typically the most challenging. Cold temperatures frequently lead to temperature inversions, where a layer of warm air traps cooler air near the ground, preventing pollutants from dispersing. Dense fog, a common occurrence during this period, further restricts visibility and concentrates particulate matter. Agricultural burning, a widespread practice for clearing crop residue, significantly contributes to elevated levels of smoke and pollutants. Spring (March to May) brings a gradual improvement as temperatures rise and winds increase, aiding in pollutant dispersion. However, dust storms originating from the Thar Desert to the south can occasionally impact air quality. The monsoon season (June to September) generally offers a respite, with rainfall washing away pollutants and increased wind speeds promoting ventilation. However, heavy rainfall can also lead to localized flooding and the release of pollutants from inundated areas. Finally, autumn (October) sees a return to cooler temperatures and calmer winds, with a gradual increase in agricultural burning as farmers prepare for the next planting season. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the winter months and be mindful of dust storm advisories in the spring. Limiting outdoor exertion during peak pollution episodes and using air purifiers indoors are recommended strategies.