Nanjing vs Johannesburg

Live air quality comparison. Nanjing has cleaner air right now.

China
Nanjing
57
Moderate
South Africa
Johannesburg
157
Unhealthy
MetricNanjingJohannesburg
AQI57157
PM2.55.4 μg/m³54.7 μg/m³
PM106.7 μg/m³54.8 μg/m³
Ozone38 ppb68 ppb
NO221.3 ppb36.3 ppb

Lower values mean cleaner air. Updated hourly. Sources: OpenAQ, Open-Meteo.