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)
23
Good
London, Greater London
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.64 μg/m³
0
55
155
255
425
605+
25.15 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
7.74 ppb
0
54
101
361
1250
2050+
0.34 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 49
Good
9.08μg/m³
PM2.5
40.97μg/m³
PM10
28.73ppb
O3
0.52ppb
SO2
3.71ppb
NO2
0.34ppm
CO
AQI 24
Good
3.23μg/m³
PM2.5
12.92μg/m³
PM10
26.11ppb
O3
0.49ppb
SO2
2.88ppb
NO2
0.34ppm
CO
AQI 38
Good
7.31μg/m³
PM2.5
33.24μg/m³
PM10
28.60ppb
O3
0.50ppb
SO2
3.51ppb
NO2
0.34ppm
CO
AQI 24
Good
3.45μg/m³
PM2.5
15.54μg/m³
PM10
26.19ppb
O3
0.52ppb
SO2
4.24ppb
NO2
0.34ppm
CO
AQI 25
Good
4.21μg/m³
PM2.5
18.10μg/m³
PM10
26.73ppb
O3
0.49ppb
SO2
4.18ppb
NO2
0.34ppm
CO
AQI 25
Good
4.45μg/m³
PM2.5
21.66μg/m³
PM10
26.96ppb
O3
0.52ppb
SO2
3.12ppb
NO2
0.34ppm
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 03:00:00 on 2026-09-10.
In the last 24 hrs, the best air quality in London, Greater London was observed at 12:00:00 on 2026-09-11.
The current air quality in London, Greater London is 23, 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 2.404 μg/m3.
The current PM10 concentration at London, Greater London is 10.636 μg/m3.
The current carbon monoxide (CO) concentration at London, Greater London is 0.335 ppm.
The current sulfur dioxide (SO2) concentration at London, Greater London is 0.525 ppb.
The current ozone (O3) concentration at London, Greater London is 25.151 ppm.
The current nitrogen dioxide (NO2) concentration at London, Greater London is 7.739 ppb.
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