Mahela Air Quality Index (AQI)

Loading live AQI data...

Loading historical AQI trends...

Mahela, nestled within the Fianarantsoa Province of Madagascar, occupies a geographically significant position within the island’s central highlands. Located at approximately -20.9687° latitude and 48.4412° longitude, the city sits at an elevation that contributes to its unique microclimate and influences air quality dynamics. The surrounding landscape is dominated by rolling hills and terraced rice paddies, characteristic of the Betsileo region, a major agricultural zone. This proximity to intensive farming practices, particularly the burning of agricultural waste after harvest, represents a key source of particulate matter. Mahela’s urban character is distinctly rural, with a gradual urban–rural gradient extending outwards into the surrounding agricultural lands. The city itself is relatively small, with a population of around 23,000, limiting industrial activity but not eliminating it entirely – small-scale workshops and processing facilities are present. The Betsibarika River flows nearby, offering a potential mitigating factor for air pollutants through deposition, though its impact is likely localized. The terrain, with its slopes and valleys, can also trap pollutants, especially during periods of low wind. The regional position, far from major coastal industrial hubs, generally results in lower baseline pollution levels compared to larger Malagasy cities, but localized sources remain critical. The highland climate, with its distinct wet and dry seasons, further modulates the dispersion and accumulation of airborne contaminants.

Mahela’s air quality follows a predictable seasonal pattern dictated by the island’s tropical climate, exhibiting a clear wet and dry season cycle. The dry season, typically spanning from May to October, often sees a noticeable increase in air pollution. This is primarily due to the prevalence of agricultural burning, as farmers clear fields for the next planting season. Reduced rainfall during this period also limits the natural cleansing effect of precipitation, allowing particulate matter to accumulate. Temperature inversions, common during the cooler nights of the dry season, can trap pollutants close to the ground, exacerbating the issue. Conversely, the wet season (November to April) brings increased rainfall and higher humidity, which naturally washes away pollutants and improves air quality. Stronger winds associated with the monsoon season also aid in dispersing contaminants. Fog, a frequent occurrence in the highlands, can temporarily reduce visibility and trap pollutants, creating localized pockets of poor air quality. Months like September and October, coinciding with peak agricultural burning, are generally periods to avoid strenuous outdoor activity, particularly for vulnerable populations such as children, the elderly, and individuals with respiratory conditions. During the wet season, outdoor activities are generally safer, though periods of heavy fog should still be approached with caution. Maintaining indoor air quality through ventilation and avoiding exposure to smoke from cooking fires remains a year-round priority.