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Live air quality index in London, Greater London today

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)

27

Good

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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)

4.78 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

18.26 μg/m³

0

55

155

255

425

605+

Ozone (O3)

22.87 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

1.10 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

7.36 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

High

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London, Greater London

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London, Greater London air quality map: Track AQI near you




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.


Frequently asked questions

How often is the air quality data for London, Greater London updated?

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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?

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The worst air quality in London, Greater London in the last 24 hours was observed at 11:00:00 on 2025-06-05.


When was the best air quality at London, Greater London in the last 24 hrs?

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In the last 24 hrs, the best air quality in London, Greater London was observed at 03:00:00 on 2025-06-06.


What is the current air quality in London, Greater London?

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The current air quality in London, Greater London is 27, categorized as Good based on real-time data.


What pollutant is the most common in London, Greater London?

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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?

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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?

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The current PM2.5 concentration at London, Greater London is 4.778 μg/m3.


What is the current concentration of PM10 in London, Greater London?

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The current PM10 concentration at London, Greater London is 18.256 μg/m3.


What is the current concentration of carbon monoxide (CO) in London, Greater London?

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The current carbon monoxide (CO) concentration at London, Greater London is 0.001 ppm.


What is the current concentration of sulfur dioxide (SO2) in London, Greater London?

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The current sulfur dioxide (SO2) concentration at London, Greater London is 1.101 ppb.


What is the current concentration of ozone (O3) in London, Greater London?

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The current ozone (O3) concentration at London, Greater London is 22.874 ppm.


What is the current concentration of nitrogen dioxide (NO2) in London, Greater London?

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The current nitrogen dioxide (NO2) concentration at London, Greater London is 7.356 ppb.


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