Highest air pollution London, today and tomorrow
Today (25 June): Air quality in London is poor. AQI and O3 are poor; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 64.8/100).
Tomorrow (26 June 2026): Air quality in London is poor. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 63.5/100). 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
Air quality in London is shaped by traffic, dense urban development, and emissions from buildings across the city. Conditions can also be influenced by pollution transported from surrounding regions in southeast England and mainland Europe.
Today - 25 June | Pollution peaks at 15:00
AQI:
Poor
64.8/100
PM2.5 (fine particles):
Good
9.9/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
10.5/100
O3 (ozone):
Poor
64.8/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 26 June | Pollution peaks at 12:00
AQI:
Poor
63.5/100
PM2.5 (fine particles):
Good
9.5/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
19.1/100
O3 (ozone):
Poor
63.5/100
SO2 (sulfur dioxide):
Good
2.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.4/100
PM1 (ultrafine particles):
Good
8.4/100
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Frequently Asked Questions
Is air quality bad in London right now?
On 25 June 2026, overall air quality in London is poor. AQI is the main air quality indicator at 64.8/100. Pollution peaks around 3:00 PM (O3: 64.8/100).
Will air quality be worse tomorrow in London?
On 26 June 2026, air quality conditions in London will be similar to today, with AQI forecast at poor at 63.5/100. Pollution peaks around 12:00 PM (O3: 63.5/100).
When is air pollution at its highest in London?
Air pollution in London is often higher during busy traffic periods, particularly in central areas where dense streets can limit airflow. Calm conditions and colder weather can trap pollutants, and regional pollution from mainland Europe can sometimes contribute to elevated levels.
Are air quality levels in London 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.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 25 June 2026 at 09:02 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