Chennai vs Rio de Janeiro

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

India
Chennai
71
Moderate
Brazil
Rio de Janeiro
204
Very Unhealthy
MetricChennaiRio de Janeiro
AQI71204
PM2.522.8 μg/m³27.9 μg/m³
PM1033.3 μg/m³28.4 μg/m³
Ozone56 ppb159 ppb
NO217.2 ppb32.8 ppb

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