Forecast
Air Pollution Forecast from Imperial College London Environmental Research Group
Today
Issued:
17/07/2026 10:27:37
Pollution Band:
Low
Details
More cloud around on Monday, with a continuing cool northerly air feed. Sunny intervals.
The northerly air feed is expected to be 'clean' and a light breeze should ensure dispersion of local pollution emissions.
Air pollution is forecast to remain 'Low' for the following pollutants:
Nitrogen Dioxide
Ozone
PM10 particulate
PM2.5 particulate
Sulphur Dioxide
Outlook
Issued:
20/07/2026 10:19:22
Start:
Tuesday 21 July
Finish:
end of Tuesday 21 July
Pollution Band:
Low
Details
Warm with sunny intervals and temperatures around the mid twenties.
A high pressure system out to the west in the Atlantic continues to pull cooler air from the northern Atlantic down over the UK. This air feed is expected to be relatively 'clean' with very low pollution levels if any. In addition a light breeze sould ensure dispersion of local pollution emissions.
Some slight increase possible later in the day as the air feed travels very close to the ground and down the east coast of the UK before arriving over the london area.
Overall air pollution is forecast to remain 'Low' for the following pollutants:
Nitrogen Dioxide
Ozone
PM10 particulate
PM2.5 particulate
Sulphur Dioxide
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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