London Air Quality Index
London, Uk · Real-time AQI data
Air quality is satisfactory, and air pollution poses little or no risk.
Pollutant Breakdown
PM2.5
42µg/m³
PM10
18µg/m³
O₃
28.1ppm
NO₂
24.7ppb
SO₂
1.1ppb
CO
3.7ppm
Station: London · Mar 17, 09:00 PM · Updates every 30 min
Health Recommendations
Air quality is satisfactory, and air pollution poses little or no risk.
How does London compare to other cities?
Compare →AQI Scale Reference
Other Cities in Uk
About Air Quality in London
The Air Quality Index (AQI) in London is measured using monitoring stations that track six key pollutants: PM2.5, PM10, ground-level ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide. The AQI is calculated using US EPA standards and ranges from 0 (excellent) to 500 (hazardous).
PM2.5 is typically the dominant pollutant in London during high-pollution periods. Fine particulate matter from traffic, industry, and seasonal factors can push AQI above 150, which is considered unhealthy for all groups.
Check the health effects guide to understand what today's AQI means for your activity level, or see the global AQI rankings to compare London with other cities worldwide.