Forecast

Today

Forecast icon

Issued By:
Environmental Research Group
King's College London

Issued On: 21/08/2017 11:41:00

Pollution Band: Low

Details

A warm, settled and rather humid day for Tuesday.

Despite the rise in temperatures, long periods of cloud cover will limit the potential for the formation of ground-level ozone.

Light winds throughout the day will reduce the dispersal of locally-emitted pollutants, while by early evening there may be some import of particulates as Greater London is affected by an air feed passing over the industrial area around Calais. However, with any imported particulates only arriving in the last part of the day, levels of PM10 and PM2.5 particulate are expected to remain in the 'Low' banding locally.

Air pollution is expected to remain 'Low' for the following pollutants throughout the forecast period:

Nitrogen Dioxide
PM10 Particulates
PM2.5 Particulates
Ozone
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 By:
Environmental Research Group
King's College London

Issued On: Not issued

Start: Not issued

Finish: Not issued

Pollution Band: Not issued

Details

The forecast for tomorrow is not available yet but should be issued around midday.

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.

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