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Forecast

Today

Forecast icon

Issued: 28/07/2014 10:22:00

Pollution Band: Low

Details

Tuesday is expected to be dry and warm. A cloudy start giving way to good sunshine in the afternoon with temperatures back into the mid to high twenties.

An air mass arriving in London will have originated in the Atlantic, west of Scotland, before travelling down through England. The fresh light nth- nth west wind should aid in the dispersion of locally emitted pollution, while not importing significant pollutants.

As a result, air pollution is expected to remain ’low’ for the following, throughout this forecast period:

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

Forecast icon

Issued: 29/07/2014 09:51:00

Start: Wednesday 30 July

Finish: end of Wednesday 30 July

Pollution Band: Low

Details

Wednesday is expected to be another dry day with temperatures peaking in the low to mid 20s and broken cloud for much of the day.

The Atlantic air feed will continue but winds will back during the day from NNW to become Westerly by end of day. This air will not be carrying any significant imported pollutants and should be of sufficient strength to disperse local emissions.

Air pollution is expected to remain ’low’ for the following pollutants throughout this forecast period:

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.


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.