Chennai vs Saint Petersburg

Live air quality comparison. Saint Petersburg has cleaner air right now.

India
Chennai
112
Unhealthy for Sensitive Groups
Russia
Saint Petersburg
41
Good
MetricChennaiSaint Petersburg
AQI11241
PM2.515.5 μg/m³8.9 μg/m³
PM1020.1 μg/m³12.2 μg/m³
Ozone64 ppb29 ppb
NO211.2 ppb55.9 ppb

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