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Degāna, a municipality in Rajasthan’s Nagaur district, occupies a relatively flat, arid landscape typical of the Shekhawati region. Situated at 26.8951°N, 74.3222°E, the city’s elevation is approximately 265 meters (869 feet) above sea level. This low-lying terrain contributes to limited natural dispersion of pollutants. Degāna is not proximate to any major bodies of water; the nearest significant water source is the Sambhar Lake, some distance away, which doesn’t exert a direct moderating influence on local climate or air quality. The surrounding area is predominantly agricultural, with millet, pulses, and oilseeds being common crops. However, increasing industrial activity, particularly small-scale stone crushing and processing related to the region’s mineral wealth, is becoming a notable factor. The urban-rural gradient is fairly sharp, with Degāna serving as a market town for surrounding villages. Dust from agricultural practices and unpaved roads, combined with emissions from vehicular traffic and local industries, significantly impacts air quality. The lack of substantial vegetation cover further exacerbates the situation, reducing the natural filtering capacity of the environment. The prevailing winds, often carrying dust from the Thar Desert, contribute to particulate matter concentrations. This geographical setting creates a challenging environment for maintaining clean air.

Degāna experiences a distinct seasonal air quality pattern. Summer (March-June) brings scorching temperatures and strong winds, leading to increased dust storms and high particulate matter levels. This is a period to avoid strenuous outdoor activity, particularly for those with respiratory conditions. The monsoon season (July-September) offers temporary relief, as rainfall washes away pollutants and suppresses dust. However, increased humidity can also foster mold growth, potentially triggering allergies. October-November sees a gradual return to drier conditions, but temperatures remain pleasant, making it a relatively favourable time for outdoor activities. Winter (December-February) is often characterized by temperature inversions, trapping pollutants near the ground and leading to poor air quality, especially in the mornings and evenings. Fog can also exacerbate the problem, reducing visibility and increasing respiratory irritation. Sensitive groups – children, the elderly, and individuals with pre-existing respiratory or cardiovascular diseases – should limit outdoor exposure during winter mornings and evenings. Throughout the year, avoiding peak traffic hours and areas near industrial activity is advisable. Monitoring local conditions and heeding health advisories is crucial for protecting respiratory health.