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Forecast

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

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Annual air quality assessment and related reports.

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Forecast

Today

Forecast icon

Issued: 17/08/2018 11:23:53

Pollution Band: Low


Details

Monday will start off cloudy with a chance of light rain in the morning. Temperatures will increase through the day into the mid-twenties with sunnier spells later in the afternoon.

The cloud cover plus a steady Atlantic breeze will minimise the potential for ground-level ozone generation.

Air pollution will remain 'Low' 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

Forecast icon

Issued: 20/08/2018 10:33:13

Start: Tuesday 21 August

Finish: end of Wednesday 22 August

Pollution Band: Low


Details

Largely cloudy conditions are expected on Tuesday as air continues to arrive from the Atlantic. Although temperatures are forecast to reach the mid-20s by late afternoon, the cloud cover and relatively 'clean' westerly air feed will limit the potential for ground-level ozone formation. Winds will be quite light throughout the day but there should be enough air movement to disperse locally-emitted pollutants.

Broadly similar weather is expected on Wednesday although there'll be more of a breeze as a weak front moves across south-east England. Accordingly, good dispersion of local emissions is expected, with ozone formation again being limited by cloud cover.

Air pollution is expected to remain 'Low' for the following pollutants during the 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.


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.

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