Real-time air quality index in Greater London, UK today
Stay updated with real-time air quality in Greater London, UK 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
Greater London, UK
Last updated: ... (Local time)
Common air pollutants in Greater London, UK
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
7.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
31.23 μg/m³
0
55
155
255
425
605+
Ozone (O3)
25.11 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
1.13 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
9.65 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Greater London, UK
Greater London, UK
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Greater London, UK air quality map: Real-time AQI near you
Air quality in cities of Greater London, UK
| No results found | |||||||
| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
Air quality in nearby states
Hertfordshire, UK
AQI 20
Good
3.46μg/m³
PM2.5
8.66μg/m³
PM10
22.36ppb
O3
0.86ppb
SO2
8.57ppb
NO2
0.01ppm
CO
Thurrock, UK
AQI 19
Good
3.49μg/m³
PM2.5
9.15μg/m³
PM10
21.14ppb
O3
0.81ppb
SO2
8.84ppb
NO2
0.03ppm
CO
Surrey, UK
AQI 19
Good
3.31μg/m³
PM2.5
8.88μg/m³
PM10
20.75ppb
O3
0.82ppb
SO2
6.24ppb
NO2
0.01ppm
CO
Windsor and Maidenhead, UK
AQI 22
Good
3.82μg/m³
PM2.5
8.39μg/m³
PM10
20.79ppb
O3
0.79ppb
SO2
8.47ppb
NO2
0.02ppm
CO
Bracknell Forest, UK
AQI 18
Good
2.25μg/m³
PM2.5
6.73μg/m³
PM10
18.89ppb
O3
0.76ppb
SO2
8.23ppb
NO2
0.02ppm
CO
Halton, UK
AQI 22
Good
2.68μg/m³
PM2.5
7.35μg/m³
PM10
23.71ppb
O3
0.65ppb
SO2
2.24ppb
NO2
0.09ppm
CO
How accurate is Greater London, UK air quality data?
Air quality measurements for Greater London, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Frequently asked questions
How frequently is the air quality data for Greater London, UK updated?
Air quality data for Greater London, UK is updated on an hourly basis.
When did Greater London, UK experience the worst air quality in the last 24 hours?
The worst air quality in Greater London, UK was recorded at 12:00:00 on 2025-07-22.
When did Greater London, UK have its best air quality in the last 24 hours?
The best air quality in Greater London, UK was recorded at 02:00:00 on 2025-07-21.
What is the real-time air quality index for Greater London, UK?
The real-time air quality index in Greater London, UK is 24, currently categorized as Good.
Which pollutant is found most often in Greater London, UK?
The most common pollutant in Greater London, UK is O3.
What can I do if the air quality in Greater London, UK is poor?
If the air quality in Greater London, UK is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Greater London, UK?
The measured PM2.5 levels in Greater London, UK at present are 3.925 μg/m3.
What are the current PM10 levels at Greater London, UK?
The current PM10 levels in Greater London, UK are 15.206 μg/m3.
What are the current carbon monoxide (CO) levels at Greater London, UK?
The current carbon monoxide (CO) level in Greater London, UK is 0.004 ppm.
What are the current sulfur dioxide (SO2) levels at Greater London, UK?
The current sulfur dioxide (SO2) levels in Greater London, UK are 1.409 ppb.
What are the current ozone (O3) levels at Greater London, UK?
The current ozone (O3) levels at Greater London, UK is 25.869 ppm.
What are the current nitrogen dioxide (NO2) levels at Greater London, UK?
The current nitrogen dioxide (NO2) levels at Greater London, UK is 12.072 ppb.
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