Air quality data anywhere you are
World AQI Ranking
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
Units
Most polluted cities among major cities in the world
This hourly ranking includes {number} Bulgaria cities with PM2.5 AQI.
This hourly ranking includes {number} Ruse stations with PM2.5 AQI.
