Chabāl Kalān Air Quality Index (AQI)

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Chabāl Kalān, nestled in the fertile plains of Punjab, India, occupies a geographically significant position within the Indo-Gangetic Plain. Located at approximately 31.48°N, 74.79°E, the city’s terrain is predominantly flat, characteristic of the alluvial landscape formed by the Indus River system. Its elevation, relatively low at around 235 meters above sea level, contributes to atmospheric stability, a key factor influencing air quality. The surrounding landscape is dominated by intensive agricultural land, a patchwork of wheat, rice, and maize fields, interspersed with smaller villages and rural settlements. This proximity to agricultural zones means the city is susceptible to seasonal agricultural burning, a significant source of particulate matter. Chabāl Kalān sits within the broader Ludhiana Metropolitan Region, experiencing a gradual urban–rural gradient as one moves outwards. While not directly adjacent to a major river, the region receives substantial rainfall during the monsoon season, which can temporarily flush pollutants from the atmosphere. The city’s location within a densely populated state and its connection to regional transportation networks, including roadways, also contribute to air pollution. Industrial activity, though not concentrated directly within Chabāl Kalān itself, is prevalent in nearby areas, impacting regional air quality and subsequently affecting the city. The flat topography and limited natural barriers exacerbate the accumulation of pollutants, particularly during periods of stagnant air.

Chabāl Kalān’s air quality follows a distinct seasonal pattern dictated by meteorological conditions and agricultural practices. The winter months (November to February) are typically the most challenging. Cold temperatures lead to frequent temperature inversions, trapping pollutants close to the ground. Dense fog, a common occurrence during this period, further restricts atmospheric mixing and exacerbates the problem. Agricultural burning, prevalent as farmers clear crop residue after the harvest, releases substantial amounts of smoke and particulate matter, significantly degrading air quality. Spring (March-May) sees a gradual improvement as temperatures rise and winds increase, dispersing pollutants. However, dust storms originating from the Thar Desert can occasionally impact air quality. The monsoon season (June-September) brings relief, with rainfall washing away pollutants and strong winds dispersing them. However, heavy rainfall can also lead to localised flooding and increased humidity, which can affect respiratory health. The post-monsoon period (October) often sees a return to poorer air quality as conditions become more stable and agricultural burning begins. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the winter months, limiting outdoor activity and wearing appropriate masks. During periods of high dust, eye and respiratory protection is also advisable. Maintaining indoor air quality through ventilation and air purifiers can provide some respite during peak pollution times.