Xian vs Nanjing

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

Unhealthy for Sensitive Groups

Metric	Xian	Nanjing
AQI	137	155
PM2.5	37.4 μg/m³	46.2 μg/m³
PM10	73.8 μg/m³	53.9 μg/m³
Ozone	40 ppb	47 ppb
NO2	25.5 ppb	56.3 ppb

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