Most polluted cities in Penza Oblast, Russia, July 2024

No city in Penza Oblast, Russia had measurements on 70% of the days, so July 2024 has no board for Penza Oblast, Russia.

Good0–50

Moderate51–100

Sensitive groups101–150

Unhealthy151–200

Very unhealthy201–300

Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales