What is the air quality in Bo?

Bo, Sierra Leone has an annual US AQI of 69 (Polluted) and average PM2.5 of 19.3 µg/m³, ranking #3166 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Bo?

September is typically the cleanest month (AQI 48) and March the most polluted (AQI 98).

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Global rank	City	Continent	AQI	PM2.5
3166	Bo, Sierra Leone	Africa & Middle East	AQI 69	PM2.5 19.3 µg/m³