Stay updated with real-time air quality in London, Greater London featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
26
Good
London, Greater London
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.06 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.47 μg/m³
0
55
155
255
425
605+
27.64 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
8.50 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
London, Greater London
London, Greater London
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AQI 31
Good
5.01μg/m³
PM2.5
13.52μg/m³
PM10
34.04ppb
O3
0.45ppb
SO2
4.37ppb
NO2
0.17ppm
CO
AQI 31
Good
4.80μg/m³
PM2.5
10.29μg/m³
PM10
33.20ppb
O3
0.45ppb
SO2
3.87ppb
NO2
0.17ppm
CO
AQI 31
Good
5.03μg/m³
PM2.5
13.59μg/m³
PM10
33.97ppb
O3
0.45ppb
SO2
4.65ppb
NO2
0.17ppm
CO
AQI 31
Good
4.25μg/m³
PM2.5
8.33μg/m³
PM10
33.47ppb
O3
0.42ppb
SO2
1.44ppb
NO2
0.17ppm
CO
AQI 32
Good
4.39μg/m³
PM2.5
11.57μg/m³
PM10
34.77ppb
O3
0.41ppb
SO2
4.17ppb
NO2
0.17ppm
CO
AQI 31
Good
3.84μg/m³
PM2.5
10.51μg/m³
PM10
32.99ppb
O3
0.41ppb
SO2
4.67ppb
NO2
0.17ppm
CO
Air quality data and pollutant measurements for Greater London, UK adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for London, Greater London is updated every hour.
The worst air quality in London, Greater London in the last 24 hours was observed at 05:00:00 on 2026-06-29.
In the last 24 hrs, the best air quality in London, Greater London was observed at 09:00:00 on 2026-06-29.
The current air quality in London, Greater London is 26, categorized as Good based on real-time data.
The most common pollutant in London, Greater London is O3.
If the air quality in London, Greater London is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at London, Greater London is 4.057 μg/m3.
The current PM10 concentration at London, Greater London is 11.471 μg/m3.
The current carbon monoxide (CO) concentration at London, Greater London is 0.174 ppm.
The current sulfur dioxide (SO2) concentration at London, Greater London is 0.531 ppb.
The current ozone (O3) concentration at London, Greater London is 27.643 ppm.
The current nitrogen dioxide (NO2) concentration at London, Greater London is 8.5 ppb.
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