Highest air pollution Southampton, today and tomorrow
Today (1 July): Air quality in Southampton is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 PM (NO2: 27.0/100).
Tomorrow (2 July 2026): Air quality in Southampton is fair. All pollutants stay as today. Pollution peaks around 9:00 PM (NO2: 24.5/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Southampton's air quality is shaped by its position as one of the UK's busiest container and cruise ship ports, with vessel emissions from the Western Docks contributing significant SO₂ and NOₓ alongside heavy goods vehicle traffic on the M271 and M27 corridor. The Southampton Water estuary provides ventilation on southerly winds, while the city's enclosed urban form limits dispersal on calm days.
Today - 1 July | Pollution peaks at 21:00
AQI:
Fair
27.0/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Fair
27.0/100
O3 (ozone):
Fair
21.3/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
7.3/100
Levels show the poorest local air quality during the day
Tomorrow - 2 July | Pollution peaks at 21:00
AQI:
Fair
24.5/100
PM2.5 (fine particles):
Good
5.6/100
PM10 (coarse particles):
Good
2.1/100
NO2 (nitrogen dioxide):
Fair
24.5/100
O3 (ozone):
Fair
20.9/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
5.1/100
Pollen forecast in Southampton
View pollen forecastFrequently Asked Questions
Is air quality bad in Southampton right now?
On 1 July 2026, overall air quality in Southampton is fair. AQI is the main air quality indicator at 27.0/100. Pollution peaks around 9:00 PM (NO2: 27.0/100).
Will air quality be worse tomorrow in Southampton?
On 2 July 2026, air quality conditions in Southampton will be similar to today, with AQI forecast at fair at 24.5/100. Pollution peaks around 9:00 PM (NO2: 24.5/100).
Are air quality levels in Southampton based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 1 July 2026 at 18:36 CET (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team