Highest air pollution St Paul's Cathedral - London, today and tomorrow
Today (25 June): Air quality in St Paul's Cathedral 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 St Paul's Cathedral 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 around St Paul’s Cathedral is shaped by its location in the City of London, surrounded by dense urban development and busy roads. Conditions are influenced by traffic emissions and limited airflow between buildings in this part of central London.
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
5.0/100
NO2 (nitrogen dioxide):
Good
10.8/100
O3 (ozone):
Poor
64.8/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
8.2/100
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
9.6/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
19.7/100
O3 (ozone):
Poor
63.5/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.4/100
PM1 (ultrafine particles):
Good
8.4/100
Other Landmarks in London
Frequently Asked Questions
Is air quality bad in St Paul's Cathedral right now?
On 25 June 2026, overall air quality in St Paul's Cathedral 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 St Paul's Cathedral?
On 26 June 2026, air quality conditions in St Paul's Cathedral 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 St Paul's Cathedral?
Air pollution near St Paul’s Cathedral is often higher during peak traffic periods, when emissions build up in narrow streets and airflow is restricted by surrounding buildings. Calm weather can further limit dispersion and increase pollution levels.
Are air quality levels in St Paul's Cathedral 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: 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