Antur Air Quality Index (AQI)

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Antur, a municipality nestled within the Kollam district of Kerala, India, occupies a geographically significant position in the state’s coastal plains. Located at coordinates 11.9870° N, 75.3760° E, the town benefits from relatively low elevation, typical of Kerala’s western coastal strip, influencing air dispersion patterns. Antur is situated inland from the Arabian Sea, approximately 15-20 kilometers from the coast, meaning direct marine influences on air quality are moderated but still present, contributing to humidity and salt aerosols. The surrounding landscape is predominantly lush, characterised by coconut plantations, paddy fields, and rubber estates – a typical Kerala agricultural mosaic. While not a major industrial hub itself, Antur lies within reach of industrial areas further north around Kollam city, potentially receiving transported pollutants. The urban-rural gradient is fairly sharp; Antur itself is a relatively small urban centre, quickly transitioning to rural agricultural land. This proximity to agricultural practices introduces potential sources of particulate matter from biomass burning during land preparation and harvesting. The terrain is generally flat, with gentle undulations, which can sometimes trap pollutants during calm weather conditions, impacting local air quality. The dense vegetation, while beneficial for carbon sequestration, can also contribute to biogenic volatile organic compounds (BVOCs) which react to form secondary pollutants.

Antur’s air quality follows a distinct seasonal pattern dictated by Kerala’s tropical monsoon climate. The southwest monsoon, arriving in June and lasting through September, generally brings cleaner air. Heavy rainfall effectively washes away particulate matter, and increased wind speeds aid dispersion. However, high humidity can also promote the formation of mould spores, impacting respiratory health. October to December sees a transition period with decreasing rainfall and calmer winds, leading to a gradual build-up of pollutants. This is often the period with the highest concentrations of dust and local emissions. January to March represents the driest season, characterised by stable atmospheric conditions and potential temperature inversions, trapping pollutants near the ground. This period is typically the most challenging for air quality. April and May, preceding the monsoon, experience rising temperatures and increased convective activity, which can temporarily improve air quality but also exacerbate ozone formation. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during the dry season, particularly February to April. Monitoring local weather patterns and avoiding peak traffic hours are advisable throughout the year.