Forecast

Today

Forecast icon

Issued By:
Environmental Research Group
King's College London

Issued On: 24/03/2017 12:18:00

Pollution Band: Moderate

Details

Saturday will be dry with long sunny spells. Feeling pleasantly warm in sheltered inland sunshine, but tempered by a stiff north-easterly breeze. Cooler around coasts with strong and gusty winds.
Outlook for Sunday to Monday. Mostly dry, bright on Sunday but probably turning cloudier on Monday, with the odd spot of drizzle.


Back-trajectory analysis shows the air arriving will have travelled at low altitude over industrialised and urban areas of northern Europe through most of the forecast period. As a result 'Moderate' PM10 and PM2.5 particulate levels are possible on Saturday with a likely drop in levels on Sunday as the air flow moves more Northern. But by Monday a more Easterly air flow will be affecting us and so importing again from northern Europe and so another rise in particulate levels will be likely.

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

Nitrogen Dioxide
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: 24/03/2017 12:18:00

Start: Saturday 25 March

Finish: end of Monday 27 March

Pollution Band: Moderate

Details

Saturday will be dry with long sunny spells. Feeling pleasantly warm in sheltered inland sunshine, but tempered by a stiff north-easterly breeze. Cooler around coasts with strong and gusty winds.
Outlook for Sunday to Monday. Mostly dry, bright on Sunday but probably turning cloudier on Monday, with the odd spot of drizzle.


Back-trajectory analysis shows the air arriving will have travelled at low altitude over industrialised and urban areas of northern Europe through most of the forecast period. As a result 'Moderate' PM10 and PM2.5 particulate levels are possible on Saturday with a likely drop in levels on Sunday as the air flow moves more Northern. But by Monday a more Easterly air flow will be affecting us and so importing again from northern Europe and so another rise in particulate levels will be likely.

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

Nitrogen Dioxide
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.

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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