London Air Quality Forecast – Current Air Pollution

The latest air quality forecast for London. Pollution and particulate levels updated every hour.




Date:

London Air Pollution Summary: Moderate

Moderate air pollution forecast valid from Friday 19 April 11:00 to end of Sunday 21 April GMT.

Easter Weekend will stay dry with some long sunny spells. Temperatures generally remaining in the very warm range for the time of year.

The settled weather in Greater London will continue, although winds will be stronger than of late but still from the East. The continuing air path is expected to import particulate pollution from the Continent but with altitudes higher this import will be less. This will combine with London's local emissions.

It's possible that 'Moderate' levels of PM10 and PM2.5 particulate will be reached at some locations.

The long sunny periods, high temperatures and East winds may also bring additional Ozone precursors allowing for photo-chemical generation of Ozone to take place. Therefore 'Moderate' Ozone may be reached at some locations.

Air pollution should remain 'Low' through the forecast period for the following pollutants:

Nitrogen Dioxide
Sulphur Dioxide

Air Quality Pollution Levels

Nitrogen Dioxide Low
Ozone Moderate
PM10 Particulate Moderate
PM2.5 Particulate Moderate
Sulphur Dioxide Low

London Air Quality Tomorrow: Moderate

Moderate air pollution forecast valid from Sunday 21 April to end of Sunday 21 April GMT.

Easter Sunday will stay dry with some long sunny spells. Temperatures generally remaining in the very warm range for the time of year.

The settled weather will continue, with winds lighter than of late and still from the East. The continuing air path is expected to import particulate pollution from the Continent. This will combine with local emissions.

The long sunny periods, high temperatures and East winds may bring additional Ozone precursors allowing for photo-chemical generation of Ozone to take place. Therefore 'Moderate' Ozone will likely be reached at some locations.

It's possible that 'Moderate' levels of PM10 and PM2.5 particulate will be reached at some locations.

Air pollution should remain 'Low' through the forecast period for the following pollutants:

Nitrogen Dioxide
Sulphur Dioxide

Air Quality Pollution Levels: Tomorrow

Nitrogen Dioxide Low
Ozone Moderate
PM10 Particulate Moderate
PM2.5 Particulate Moderate
Sulphur Dioxide Low

Air Pollution Banding Value

Low 1-3
At Risk Individuals: Enjoy your usual outdoor activities.
General Population: Enjoy your usual outdoor activities.

Moderate 4-6
At Risk Individuals: Adults and children with lung problems, and adults with heart problems, who experience symptoms, should consider reducing strenuous physical activity, particularly outdoors.

General Population: Enjoy your usual outdoor activities.

High 7-9
At Risk Individuals: Adults and children with lung problems, and adults with heart problems, should reduce strenuous physical exertion, particularly outdoors, and particularly if they experience symptoms. People with asthma may find they need to use their reliever inhaler more often. Older people should also reduce physical exertion.

General Population: Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing activity, particularly outdoors.

Very High 10
At Risk Individuals: Adults and children with lung problems, adults with heart problems, and older people, should avoid strenuous physical activity. People with asthma may find they need to use their reliever inhaler more often.

General Population: Reduce physical exertion, particularly outdoors, especially if you experience symptoms such as cough or sore throat.

Air Quality Disclaimer

This London air quality forecast is intended to provide information on expected pollution levels in areas of significant public exposure.

It may not apply in very specific locations close to unusually strong or short-lived local sources of pollution.

Data supplied by TfL in conjunction with London Air.

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