skip to the main content area of this page
Photo of landscape and people

Forecast

Air Pollution Forecast from King's College London Environmental Research Group

Read more...

Reports

Annual air quality assessment and related reports.

Read more...

LondonAir icon
View the Air Quality Apps on London Air

Forecast

Today

Forecast icon

Issued: 19/04/2019 10:58:08

Pollution Band: Moderate


Details

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


This 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.

Outlook

Forecast icon

Issued: 20/04/2019 08:22:06

Start: Sunday 21 April

Finish: end of Sunday 21 April

Pollution Band: Moderate


Details

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


This 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.


The Ealing 8 monitoring site on Horn Lane, Acton forms part of an investigation of the local PM10 sources at this location. The site is affected by specific local sources of PM10 particulate and it is not representative of other areas within the Borough.


How to use the Daily Air Quality Index *

  • Step 1: Determine whether you (or your children) are likely to be at-risk from air pollution. Your doctor may also be able to give you advice.
  • Step 2: If you may be at-risk, and are planning strenuous activity outdoors, check the air pollution forecast.
  • Step 3: Use the health messages corresponding to the highest forecast level of pollution as a guide.
Air Pollution Banding Value Accompanying health messages for at-risk groups and
the general population
At-risk individuals ** General population
Low 1-3 Enjoy your usual outdoor activities.

Enjoy your usual outdoor activities.

Moderate 4-6 Adults and children with lung problems, and adults with heart problems, who experience symptoms, should consider reducing strenuous physical activity, particularly outdoors. Enjoy your usual outdoor activities.
High 7-9 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. Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing activity, particularly outdoors.
Very High 10 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. Reduce physical exertion, particularly outdoors, especially if you experience symptoms such as cough or sore throat.

* Daily Air Quality Index information sourced from UK-AIR (Air Information Resource) website.

* Adults and children with heart or lung problems are at greater risk of symptoms. Follow your doctor's usual advice about exercising and managing your condition. It is possible that very sensitive individuals may experience health effects even on Low air pollution days.

Back to Air Quality Home