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)
49
Good
London, Greater London
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.66 μg/m³
0
55
155
255
425
605+
45.91 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
15.57 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 54
Moderate
11.19μg/m³
PM2.5
23.52μg/m³
PM10
50.38ppb
O3
0.65ppb
SO2
13.13ppb
NO2
0.00ppm
CO
AQI 52
Moderate
10.48μg/m³
PM2.5
28.68μg/m³
PM10
48.35ppb
O3
0.65ppb
SO2
25.57ppb
NO2
0.01ppm
CO
AQI 56
Moderate
11.58μg/m³
PM2.5
24.89μg/m³
PM10
50.92ppb
O3
0.65ppb
SO2
13.49ppb
NO2
0.00ppm
CO
AQI 52
Moderate
9.82μg/m³
PM2.5
22.90μg/m³
PM10
47.76ppb
O3
0.64ppb
SO2
6.38ppb
NO2
0.00ppm
CO
AQI 54
Moderate
9.18μg/m³
PM2.5
34.74μg/m³
PM10
55.81ppb
O3
0.73ppb
SO2
15.91ppb
NO2
0.01ppm
CO
AQI 49
Good
9.07μg/m³
PM2.5
26.80μg/m³
PM10
51.68ppb
O3
0.64ppb
SO2
9.59ppb
NO2
0.01ppm
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 12:00:00 on 2026-08-14.
In the last 24 hrs, the best air quality in London, Greater London was observed at 05:00:00 on 2026-08-13.
The current air quality in London, Greater London is 49, 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 8.74 μg/m3.
The current PM10 concentration at London, Greater London is 22.663 μg/m3.
The current carbon monoxide (CO) concentration at London, Greater London is 0.004 ppm.
The current sulfur dioxide (SO2) concentration at London, Greater London is 0.625 ppb.
The current ozone (O3) concentration at London, Greater London is 45.912 ppm.
The current nitrogen dioxide (NO2) concentration at London, Greater London is 15.569 ppb.
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