What is the air quality in Cologne?

Cologne, Germany has an annual US AQI of 59 (Reasonable) and average PM2.5 of 13.8 µg/m³, ranking #1989 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Cologne?

July is typically the cleanest month (AQI 53) and March the most polluted (AQI 68).

Where does Cologne's air quality data come from?

PM2.5: 1998–2026 (monitors 2007–2010, 2015–2026, satellite 1998–2006, 2011–2014, 2018; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Cologne, Germany — Air Quality & Clean City Guide 2026

Cologne Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1989	Cologne, Germany	Europe	AQI 59	PM2.5 13.8 µg/m³