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Forecast

Today

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Issued: 01/09/2014 11:43:00

Pollution Band: Low

Details

A change to high pressure influencing our weather this week. Tuesday is expected to be a dry day with light winds and a sunny afternoon.
The light winds will have originated over the Atlantic but current information shows them circulating just north of London before returning from the north/east. Since slight variations of this path are possible some recirculation of emissions from Monday is possible, however this is not expected to impact on the banding level in general.

Although a sunny afternoon is expected this will not be extended enough to give much photochemical activity. As we move into September the decreasing strength and duration of solar radiation usually limits photochemical activity.

Air pollution is expected to remain ‘low’ throughout the forecast period for the following pollutants.

Nitrogen dioxide
Ozone
PM10 Particulate
PM2.5 Particulate
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

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Issued: 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.