Worst air pollution London, today and tomorrow
Today (9 August): Air quality in London is fair. AQI, PM2.5, NO2, O3, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 12:00 AM (O3: 28.9/100).
Tomorrow (10 August 2026): Air quality in London is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 35.5/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Clean south-central kentucky hill-country air is what shapes air quality most in London, and air quality is generally very good outside of pollen peaks. That mix of factors is fairly representative of towns in this part of the country. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 9 August | Pollution peaks at 00:00
AQI:
Fair
28.9/100
PM2.5 (fine particles):
Fair
28.8/100
PM10 (coarse particles):
Good
11.9/100
NO2 (nitrogen dioxide):
Fair
21.1/100
O3 (ozone):
Fair
28.9/100
SO2 (sulfur dioxide):
Good
13.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Fair
20.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 10:00
AQI:
Fair
35.5/100
PM2.5 (fine particles):
Fair
31.9/100
PM10 (coarse particles):
Good
13.4/100
NO2 (nitrogen dioxide):
Fair
21.0/100
O3 (ozone):
Fair
35.5/100
SO2 (sulfur dioxide):
Good
14.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Fair
21.7/100
Pollen forecast in London
View pollen forecastFrequently Asked Questions
Is air quality bad in London right now?
On 9 August 2026, overall air quality in London is fair. AQI is the main air quality indicator at 28.9/100. Pollution peaks around 12:00 AM (O3: 28.9/100).
Will air quality be worse tomorrow in London?
On 10 August 2026, air quality conditions in London will be similar to today, with AQI forecast at fair at 35.5/100. Pollution peaks around 10:00 AM (O3: 35.5/100).
When is air pollution at its worst in London?
London's air quality follows a clear seasonal pattern — mild winter weather usually brings the year's cleanest air, whereas long, hot, humid summers bring the year's worst ozone readings. Dense forest cover nearby means natural plant emissions add to ozone formation even without much traffic.
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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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