Nanjing vs Johannesburg

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

China
Nanjing
154
Unhealthy
South Africa
Johannesburg
90
Moderate
MetricNanjingJohannesburg
AQI15490
PM2.532.9 μg/m³50.9 μg/m³
PM1038.3 μg/m³52 μg/m³
Ozone85 ppb47 ppb
NO241 ppb47.7 ppb

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