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Live 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)

27

Good

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Greater London, UK

Last updated: ... (Local time)

Major air pollutants in Greater London, UK

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)

27.21 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

1.09 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

7.52 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

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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

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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.

Frequently asked questions

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

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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?

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The worst air quality in Greater London, UK was recorded at 10:00:00 on 2025-06-05.


When did Greater London, UK have its best air quality in the last 24 hours?

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The best air quality in Greater London, UK was recorded at 04:00:00 on 2025-06-06.


What is the real-time air quality index for Greater London, UK?

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The real-time air quality index in Greater London, UK is 27, currently categorized as Good.


Which pollutant is found most often in Greater London, UK?

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The most common pollutant in Greater London, UK is PM2.5.


What can I do if the air quality in Greater London, UK is poor?

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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?

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The measured PM2.5 levels in Greater London, UK at present are 4.778 μg/m3.


What are the current PM10 levels at Greater London, UK?

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The current PM10 levels in Greater London, UK are 18.256 μg/m3.


What are the current carbon monoxide (CO) levels at Greater London, UK?

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The current carbon monoxide (CO) level in Greater London, UK is 0.001 ppm.


What are the current sulfur dioxide (SO2) levels at Greater London, UK?

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The current sulfur dioxide (SO2) levels in Greater London, UK are 1.091 ppb.


What are the current ozone (O3) levels at Greater London, UK?

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The current ozone (O3) levels at Greater London, UK is 27.208 ppm.


What are the current nitrogen dioxide (NO2) levels at Greater London, UK?

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The current nitrogen dioxide (NO2) levels at Greater London, UK is 7.52 ppb.


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