Chennai vs Saint Petersburg

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

India
Chennai
65
Moderate
Russia
Saint Petersburg
38
Good
MetricChennaiSaint Petersburg
AQI6538
PM2.517.2 μg/m³4 μg/m³
PM1025.8 μg/m³5.8 μg/m³
Ozone64 ppb34 ppb
NO24.2 ppb22.4 ppb

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