What is the air quality in Bacău?

Bacău, Romania has an annual US AQI of 65 (Polluted) and average PM2.5 of 16.9 µg/m³, ranking #2786 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Bacău?

May is typically the cleanest month (AQI 53) and January the most polluted (AQI 80).

Where does Bacău's air quality data come from?

PM2.5: 1998–2026 (monitors 2009–2013, 2018, 2020–2021, 2025, satellite 1998–2008, 2013–2024, model 2025–2026). Measured by government monitoring stations. Full sources are on the methodology page.

Bacău, Romania — Air Quality & Clean City Guide 2026

Bacău Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2786	Bacău, Romania	Europe	AQI 65	PM2.5 16.9 µg/m³