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)
30
Good
London, Greater London
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.58 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.85 μg/m³
0
55
155
255
425
605+
32.12 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
12.07 ppb
0
54
101
361
1250
2050+
0.01 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
London, Greater London
London, Greater London
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AQI 33
Good
5.68μg/m³
PM2.5
15.33μg/m³
PM10
35.15ppb
O3
0.41ppb
SO2
13.39ppb
NO2
0.01ppm
CO
AQI 44
Good
7.81μg/m³
PM2.5
20.63μg/m³
PM10
30.77ppb
O3
0.41ppb
SO2
6.53ppb
NO2
0.01ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
15.25μg/m³
PM10
35.02ppb
O3
0.41ppb
SO2
13.16ppb
NO2
0.01ppm
CO
AQI 30
Good
4.58μg/m³
PM2.5
8.72μg/m³
PM10
32.12ppb
O3
0.39ppb
SO2
4.04ppb
NO2
0.00ppm
CO
AQI 38
Good
6.63μg/m³
PM2.5
10.85μg/m³
PM10
31.14ppb
O3
0.42ppb
SO2
6.22ppb
NO2
0.01ppm
CO
AQI 30
Good
4.25μg/m³
PM2.5
9.54μg/m³
PM10
31.82ppb
O3
0.39ppb
SO2
8.51ppb
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 11:00:00 on 2026-03-28.
In the last 24 hrs, the best air quality in London, Greater London was observed at 04:00:00 on 2026-03-29.
The current air quality in London, Greater London is 31, 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 4.653 μg/m3.
The current PM10 concentration at London, Greater London is 11.921 μg/m3.
The current carbon monoxide (CO) concentration at London, Greater London is 0.005 ppm.
The current sulfur dioxide (SO2) concentration at London, Greater London is 0.418 ppb.
The current ozone (O3) concentration at London, Greater London is 32.514 ppm.
The current nitrogen dioxide (NO2) concentration at London, Greater London is 12.024 ppb.
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