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Pushkar, nestled in the Ajmer district of Rajasthan, India, occupies a unique geographic position. Situated at 26.4877°N, 74.5559°E, the city lies at an elevation of approximately 520 meters (1,706 feet) within the Thar Desert’s eastern margins. This location, while not directly within the most arid core, contributes to dust storms and dry conditions. The landscape is characterized by undulating sand dunes and rocky terrain, punctuated by the sacred Pushkar Lake, a vital water body but also a potential sink for pollutants. The Aravalli Range lies to the west, offering some degree of wind buffering, but also channeling airflows. Pushkar’s urban character is defined by its dense, historic core surrounding the lake, transitioning to more dispersed settlements as one moves outwards. The surrounding region is predominantly agricultural, with wheat, barley, and pulses being common crops, and livestock farming prevalent. While not a major industrial hub itself, proximity to industrial areas in Ajmer and nearby towns contributes to regional background pollution. The urban-rural gradient is relatively sharp, with agricultural practices like crop residue burning impacting local air quality, particularly during post-harvest seasons. The city’s topography, combined with meteorological conditions, creates localized pollution hotspots.

Pushkar’s air quality follows a distinct seasonal pattern. Winter (November to February) sees the poorest conditions. Cool temperatures and calm winds create temperature inversions, trapping pollutants near the ground, exacerbated by increased wood and biomass burning for heating. Fog further concentrates particulate matter. March and April bring rising temperatures and pre-monsoon dust storms, elevating particulate matter levels. The monsoon season (July to September) offers temporary relief. Rainfall washes away pollutants, and increased humidity suppresses dust. However, increased cloud cover can also trap pollutants. October and early November witness a transition period, with decreasing rainfall and increasing temperatures, leading to a gradual deterioration in air quality. The post-monsoon period often sees agricultural residue burning, adding to the pollution load. Sensitive groups – children, the elderly, and those with respiratory conditions – should avoid strenuous outdoor activity during winter mornings and evenings, and periods of dust storms. During the monsoon, while air is cleaner, increased humidity can trigger respiratory issues in some. Monitoring local conditions and limiting exposure during peak pollution times is crucial.