London, Greater London live air quality index now
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)
44
Good
London, Greater London
Last updated: ... (Local time)
Major air pollutants in London, Greater London
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
7.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
29.87 μg/m³
0
55
155
255
425
605+
Ozone (O3)
21.66 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
1.22 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
10.36 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.00 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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London, Greater London air quality map: Track AQI near you
Air quality in nearby cities
Worcester Park, Surrey
AQI 27
Good
5.45μg/m³
PM2.5
15.52μg/m³
PM10
16.16ppb
O3
0.91ppb
SO2
10.07ppb
NO2
0.01ppm
CO
Buckhurst Hill, Essex
AQI 22
Good
4.39μg/m³
PM2.5
18.23μg/m³
PM10
20.51ppb
O3
0.94ppb
SO2
9.07ppb
NO2
0.01ppm
CO
Ewell, Surrey
AQI 27
Good
5.47μg/m³
PM2.5
15.71μg/m³
PM10
16.25ppb
O3
0.90ppb
SO2
10.25ppb
NO2
0.01ppm
CO
Borehamwood, Hertfordshire
AQI 21
Good
3.26μg/m³
PM2.5
6.14μg/m³
PM10
23.01ppb
O3
0.63ppb
SO2
4.16ppb
NO2
0.00ppm
CO
Chigwell, Essex
AQI 27
Good
5.48μg/m³
PM2.5
18.05μg/m³
PM10
15.72ppb
O3
0.89ppb
SO2
12.93ppb
NO2
0.02ppm
CO
West Molesey, Surrey
AQI 20
Good
3.06μg/m³
PM2.5
9.41μg/m³
PM10
21.80ppb
O3
0.71ppb
SO2
6.96ppb
NO2
0.01ppm
CO
How accurate is Greater London, UK air quality data?
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
Frequently asked questions
How often is the air quality data for London, Greater London updated?
The air quality for London, Greater London is updated every hour.
When was the worst air quality at London, Greater London in the last 24 hrs?
The worst air quality in London, Greater London in the last 24 hours was observed at 04:00:00 on 2025-07-23.
When was the best air quality at London, Greater London in the last 24 hrs?
In the last 24 hrs, the best air quality in London, Greater London was observed at 01:00:00 on 2025-07-22.
What is the current air quality in London, Greater London?
The current air quality in London, Greater London is 38, categorized as Good based on real-time data.
What pollutant is the most common in London, Greater London?
The most common pollutant in London, Greater London is PM2.5.
What should I do if the air quality in London, Greater London is poor?
If the air quality in London, Greater London is poor, consider staying indoors and wearing a mask to protect yourself.
What is the current concentration of PM2.5 in London, Greater London?
The current PM2.5 concentration at London, Greater London is 7.476 μg/m3.
What is the current concentration of PM10 in London, Greater London?
The current PM10 concentration at London, Greater London is 29.711 μg/m3.
What is the current concentration of carbon monoxide (CO) in London, Greater London?
The current carbon monoxide (CO) concentration at London, Greater London is 0.005 ppm.
What is the current concentration of sulfur dioxide (SO2) in London, Greater London?
The current sulfur dioxide (SO2) concentration at London, Greater London is 1.222 ppb.
What is the current concentration of ozone (O3) in London, Greater London?
The current ozone (O3) concentration at London, Greater London is 24.355 ppm.
What is the current concentration of nitrogen dioxide (NO2) in London, Greater London?
The current nitrogen dioxide (NO2) concentration at London, Greater London is 9.685 ppb.
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