Gunupur Air Quality Index (AQI)

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Gunupur, nestled in the Rayagada district of Odisha, India, occupies a geographically significant position within the Eastern Ghats. Located at approximately 19.08°N, 83.82°E, the city sits at an elevation of roughly 450 meters above sea level, contributing to a relatively cooler climate compared to coastal Odisha. The surrounding landscape is characterized by undulating hills, dense forests, and agricultural plains, typical of the region's predominantly rural character. The nearby Nagavali River, a vital water source, influences local microclimates and provides some degree of moisture. Gunupur’s urban footprint is relatively compact, reflecting its smaller population of around 60,000. The urban–rural gradient is sharp; the city transitions quickly into agricultural lands and forested areas. While not directly adjacent to major industrial belts, Gunupur’s proximity to mining activities in the surrounding Rayagada district, particularly bauxite extraction, introduces potential sources of particulate matter. Agricultural practices, including burning of crop residue after harvest, also contribute to localized air pollution episodes. The topography, with its hills and valleys, can trap pollutants, especially during periods of low wind speed. The prevailing wind patterns, generally from the west, influence the dispersion of pollutants, often carrying them eastward. The region's geology, with exposed laterite soils, can also contribute to dust generation, particularly during the dry season. This interplay of topography, land use, and regional industrial activity shapes Gunupur’s air quality profile.

Gunupur’s air quality experiences a distinct seasonal cycle dictated by the region’s tropical climate and monsoon patterns. The dry season, typically spanning from November to May, presents the most challenging period. Reduced rainfall and lower humidity lead to increased dust generation from agricultural fields and unpaved roads. Temperature inversions, common during the cooler nights of December and January, trap pollutants near the ground, exacerbating the problem. Agricultural burning, a widespread practice after the harvest season (December-February), significantly elevates particulate matter concentrations. The monsoon season, from June to October, brings relief as rainfall washes away pollutants and strong winds disperse them. However, periods of prolonged rainfall can lead to damp conditions and increased fungal spores, impacting respiratory health. The transitional months of March-May and September-November see fluctuating conditions, with periods of dust storms interspersed with brief spells of rain. Fog, particularly in December and January, further restricts atmospheric mixing and traps pollutants. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should exercise caution during the dry season, especially during agricultural burning periods. Outdoor activities are best avoided during these times. During the monsoon, while overall air quality improves, those with allergies should be mindful of increased pollen and fungal spore counts. Maintaining indoor air quality through ventilation and air purifiers is advisable throughout the year, but particularly during periods of elevated pollution.