Yaoundé Air Quality Index (AQI)

Loading live AQI data...

Loading weather snapshot...

Loading historical AQI trends...

Yaoundé, the political capital of Cameroon, is situated in the Centre Region at coordinates 3.8667°N, 11.5167°E, nestled within the hilly, forested southern plateau of the country at an elevation of approximately 750 meters above sea level. This elevated position in the equatorial zone gives the city a relatively mild climate compared to coastal areas, but its geography significantly influences air quality dynamics. The urban area is characterized by rolling hills and valleys, with the Mfoundi River flowing through the city, though it is not a major body of water that substantially disperses pollutants. Yaoundé's location inland, away from the Atlantic Ocean, means it lacks the cleansing sea breezes that benefit coastal cities like Douala, leading to more stagnant air conditions. The city is surrounded by a mix of tropical rainforest and agricultural zones, with cocoa and coffee plantations prevalent in the region, but urban sprawl has encroached on these green belts, reducing natural air filtration. As a major administrative and economic hub, Yaoundé experiences typical urban pollution sources, including vehicle emissions from its congested road network, industrial activities concentrated in areas like Nlongkak, and biomass burning for cooking in informal settlements. The terrain's valleys can trap pollutants, especially during dry seasons, exacerbating local air quality issues. The urban-rural gradient shows higher pollution in the densely populated central districts, while peripheral areas benefit from more vegetation, though rapid urbanization is blurring this distinction.

Yaoundé's air quality follows a seasonal pattern influenced by its equatorial climate, with two dry seasons and two wet seasons annually. During the long dry season from November to March, pollution tends to peak due to reduced rainfall, which allows particulate matter from vehicles, industrial emissions, and dust to accumulate in the atmosphere. This period often experiences temperature inversions in the early mornings, trapping pollutants near the ground, especially in the city's valleys, making outdoor activities less advisable, particularly for sensitive groups like children, the elderly, and those with respiratory conditions. The short dry season in July and August sees similar issues, though it is less severe. In contrast, the wet seasons—from March to June and September to October—bring heavy rainfall that helps cleanse the air by washing out pollutants, leading to improved air quality. These months are more favourable for outdoor activities, as the rain reduces dust and disperses emissions. However, high humidity during wet periods can sometimes combine with pollutants to form haze, though this is less common than in drier months. Wind patterns are generally mild, with light breezes that do little to disperse pollution, so meteorological factors like rainfall become crucial. Sensitive individuals should monitor local air quality reports and limit exposure during dry spells, using masks if necessary, while taking advantage of the cleaner air during rainy seasons for exercise and outdoor pursuits.