Nanjing vs Johannesburg

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

China
Nanjing
80
Moderate
South Africa
Johannesburg
155
Unhealthy
MetricNanjingJohannesburg
AQI80155
PM2.522.1 μg/m³56 μg/m³
PM1025.4 μg/m³56.8 μg/m³
Ozone15 ppb10 ppb
NO235.7 ppb64.8 ppb

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