Forecast
Air Pollution Forecast from Imperial College London Environmental Research Group
Today
Issued:
29/12/2025 11:14:07
Pollution Band:
Low
Details
A clear sunny day is forecast for Tuesday 30th December.
Feeling very cold in an northerly Arctic airflow, which will have travelled down over the North Sea en route. This cold air feed is expected to be relatively 'clean'. In addition, a light breeze should also ensure dispersion of any local emissions.
Air pollution is expected to remain 'Low' for the following pollutants:
Nitrogen Dioxide
Ozone
Sulphur Dioxide
PM10 Particulates
PM2.5 Particulates
Outlook
Issued:
29/12/2025 12:15:05
Start:
Wednesday 31 December
Finish:
end of Wednesday 31 December
Pollution Band:
Low
Details
A clear sunny day is forecast for New Year's Eve.
Temperatures are expected to be only a few degrees above zero all day, and feeling even colder early in the morning, and later once the sun goes down. A continuing northerly air feed from the Arctic, expected to have travelled over the UK before arriving. Locally a very light breeze, with almost calm conditions later in the evening and overnight.
On cold winter evenings there is very often an increase in emissions from domestic solid fuel and wood burning. In addition, during very cold and still weather, a condition known as temperature inversion often results in pollution emissions becoming trapped and more concentrated in a colder layer of air closer to the ground. An increase in particulate pollution is expected due to poorly dispersed local emissions and some UK imported pollution.
Overall, air pollution is expected to remain 'Low' for the following pollutants:
Nitrogen Dioxide
Ozone
Sulphur Dioxide
PM10 Particulates
PM2.5 Particulates
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. Horn Lane will have increased levels of particulate matter that will not be representative of rest of 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.
Health Advice
| 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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