African cities with the cleanest air for expats and digital nomads — ranked by Air Quality Index.
💨 How we rank: Cities are ranked by Air Quality Index (AQI) — lower is better. AQI 0–50 is Good, 51–100 is Moderate, 101–150 is Unhealthy for sensitive groups. PM2.5 (fine particulate matter) is shown as a secondary indicator — WHO guideline is under 15 μg/m³.