What is the air quality in Southampton?

Southampton, United Kingdom has an annual US AQI of 53 (Reasonable) and average PM2.5 of 11.4 µg/m³, ranking #1135 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Southampton?

July is typically the cleanest month (AQI 46) and March the most polluted (AQI 63).

Where does Southampton's air quality data come from?

PM2.5: 1998–2026 (monitors 2008–2026, satellite 1998–2008, 2010–2011, 2016–2017; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Southampton, United Kingdom — Air Quality & Clean City Guide 2026

Southampton Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1135	Southampton, United Kingdom	Europe	AQI 53	PM2.5 11.4 µg/m³