Belagal Air Quality Index (AQI)

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Belagal, nestled in the Kadapa district of Andhra Pradesh, India, occupies a geographically significant position within the Deccan Plateau. Located at approximately 15.8183° N latitude and 77.6702° E longitude, the town’s terrain is characterized by undulating hills and rocky outcrops, typical of the region's ancient geological formations. The elevation, around 550 meters above sea level, contributes to localized temperature variations and influences atmospheric stability. Belagal’s proximity to the Penna River, though not directly adjacent, provides a moderating influence on humidity and temperature, particularly during the hotter months. The surrounding landscape is a mosaic of dry deciduous forests and agricultural fields, primarily cultivating crops like groundnut, sesame, and pulses. This agricultural activity, while vital to the local economy, can contribute to seasonal particulate matter pollution, especially during harvest periods when burning of crop residue is practiced. To the east, the landscape gradually transitions into more arid scrubland. The urban–rural gradient around Belagal is relatively sharp; the town itself is compact, with a clear delineation between the built environment and the surrounding agricultural zones. The town’s location within a broader industrial belt, though not directly a major industrial hub itself, experiences some influence from nearby manufacturing centers in Kadapa and Kurnool districts, potentially impacting air quality through transported pollutants. The prevailing winds, generally from the west, can carry pollutants from these areas, impacting Belagal’s air quality profile. The plateau’s topography can also trap pollutants, especially during periods of low wind speed and temperature inversions.

Belagal’s air quality exhibits a distinct seasonal pattern dictated by the region’s tropical climate and monsoon influences. The pre-monsoon season (March-May) typically witnesses the poorest air quality. High temperatures and low relative humidity create stable atmospheric conditions, often leading to temperature inversions where cooler air is trapped beneath a layer of warmer air, preventing vertical mixing and concentrating pollutants near the ground. Agricultural burning, prevalent during this period as farmers prepare fields for the monsoon, significantly contributes to particulate matter pollution. The monsoon season (June-September) brings relief, with increased rainfall and stronger winds dispersing pollutants. The high humidity also reduces the concentration of certain pollutants. The post-monsoon season (October-November) sees a gradual return to drier conditions, and while rainfall continues intermittently, the air quality can deteriorate as temperatures rise and wind speeds decrease. December and January represent the coolest months, with occasional fog formation, which can trap pollutants and reduce visibility. Outdoor activities are generally best enjoyed during the monsoon months (July-August) when rainfall is frequent and air quality is comparatively better. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the pre-monsoon season and periods of fog, limiting prolonged outdoor exposure and considering the use of air purifiers indoors. The agricultural cycle and weather patterns combine to create a dynamic air quality profile, requiring ongoing monitoring and targeted mitigation strategies.