Nanjing vs Chennai

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

China
Nanjing
79
Moderate
India
Chennai
68
Moderate
MetricNanjingChennai
AQI7968
PM2.523.4 μg/m³18.9 μg/m³
PM1026.4 μg/m³22.7 μg/m³
Ozone8 ppb25 ppb
NO244.1 ppb23.3 ppb

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