Forecast

Today

Forecast icon

Issued By:
Environmental Research Group
King's College London

Issued On: 20/09/2017 09:29:00

Pollution Band: Low

Details

Thursday is expected to be mild with good sunny periods early on, becoming cloudier, with some rain forecast for later in the evening.

A moderate southerly or south-westerly breeze is expected to bring in Atlantic air via north-west France and the Channel for most of the day. The breeze becoming westerly on Thursday night.

The relatively 'clean' air-feed should ensure the dispersal of local emissions while not contributing any significant pollution.

Levels are expected to remain 'Low' for the following pollutants throughout the forecast period:

Nitrogen Dioxide
Ozone
PM10 Particulates
PM2.5 Particulates
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: 21/09/2017 10:33:00

Start: Friday 22 September

Finish: end of Friday 22 September

Pollution Band: Low

Details

Friday will have a chilly start with any isolated fog patches clearing. A dry and sunny morning, then cloud will thicken during the afternoon, especially across western areas, but likely remaining dry.

Nitrogen dioxide and particulate levels may increase around the morning rush hours in-particular due to the patchy fog and the low wind speeds. Overall though, the clean feed of south-westerly air through the day should ensure pollution is dispersed and remains 'Low' for the following pollutants throughout the forecast period:

Nitrogen Dioxide
Ozone
PM10 Particulates
PM2.5 Particulates
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.

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