Alewah Air Quality Index (AQI)

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Alewah, a small city in the Jind district of Haryana, India, occupies a relatively flat expanse of the Indo-Gangetic Plain at approximately 236 meters (774 feet) elevation. Its coordinates (29.4767, 76.4522) place it within a predominantly agricultural landscape, characterized by intensive farming of wheat, rice, and sugarcane. The surrounding terrain is largely alluvial, formed by the deposition of sediments from the ancient Ghaggar-Hakra river system, now a seasonal stream. Alewah’s location isn’t directly adjacent to a major body of water, though groundwater is a crucial resource. The city’s air quality is significantly influenced by its position within the broader National Capital Region (NCR), experiencing pollutant transport from industrial areas around Delhi and Panipat. A noticeable urban-rural gradient exists; while Alewah itself is a smaller urban center, it’s encircled by numerous villages engaged in agricultural practices, including crop residue burning. This practice, alongside vehicular emissions from the Jind-Rohtak highway and local traffic, contributes substantially to particulate matter concentrations. The lack of significant natural windbreaks across the flat terrain exacerbates pollutant dispersion challenges, leading to localized build-up during calm weather conditions. Dust from agricultural fields and unpaved roads further degrades air quality, particularly during drier months.

Alewah’s air quality follows a distinct seasonal pattern. The post-monsoon period, from October to November, is typically the most polluted. The cessation of monsoon rains reduces atmospheric cleansing, while widespread crop residue burning following the rice harvest releases massive amounts of smoke and particulate matter. Shallow temperature inversions during cooler mornings trap pollutants near the ground, worsening conditions. December and January bring cold, calm weather, further exacerbating pollution levels. February sees a gradual improvement as temperatures rise and wind speeds increase. The pre-monsoon months of March to May are characterized by dust storms and rising temperatures, leading to increased particulate matter, though winds offer some dispersion. The monsoon season, from June to September, provides the cleanest air, as rainfall washes away pollutants and high humidity suppresses dust. However, increased humidity can also promote secondary pollutant formation. Sensitive groups – children, the elderly, and those with respiratory conditions – should avoid prolonged outdoor activity during October-November and December-January. March-May requires caution due to dust. Monitoring local conditions is crucial, as variability exists even within seasons. Prioritizing indoor air purification and wearing masks during peak pollution periods is advisable.