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)
27
Good
London, Greater London
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.09 μg/m³
0
55
155
255
425
605+
19.09 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
13.26 ppb
0
54
101
361
1250
2050+
0.00 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
London, Greater London
London, Greater London
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AQI 22
Good
4.20μg/m³
PM2.5
14.78μg/m³
PM10
23.09ppb
O3
0.66ppb
SO2
11.85ppb
NO2
0.93ppm
CO
AQI 33
Good
5.55μg/m³
PM2.5
12.82μg/m³
PM10
18.56ppb
O3
0.74ppb
SO2
9.26ppb
NO2
0.93ppm
CO
AQI 22
Good
4.25μg/m³
PM2.5
14.93μg/m³
PM10
23.16ppb
O3
0.66ppb
SO2
12.18ppb
NO2
0.93ppm
CO
AQI 27
Good
5.06μg/m³
PM2.5
8.24μg/m³
PM10
16.39ppb
O3
0.76ppb
SO2
7.47ppb
NO2
0.93ppm
CO
AQI 17
Good
3.05μg/m³
PM2.5
7.99μg/m³
PM10
17.75ppb
O3
0.72ppb
SO2
9.74ppb
NO2
0.93ppm
CO
AQI 27
Good
4.59μg/m³
PM2.5
9.54μg/m³
PM10
20.15ppb
O3
0.75ppb
SO2
9.91ppb
NO2
0.93ppm
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 11:00:00 on 2026-01-13.
In the last 24 hrs, the best air quality in London, Greater London was observed at 12:00:00 on 2026-01-14.
The current air quality in London, Greater London is 27, categorized as Good based on real-time data.
The most common pollutant in London, Greater London is PM2.5.
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 5.38 μg/m3.
The current PM10 concentration at London, Greater London is 15.093 μg/m3.
The current carbon monoxide (CO) concentration at London, Greater London is 0.001 ppm.
The current sulfur dioxide (SO2) concentration at London, Greater London is 0.456 ppb.
The current ozone (O3) concentration at London, Greater London is 19.381 ppm.
The current nitrogen dioxide (NO2) concentration at London, Greater London is 12.388 ppb.
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