This map shows the daily air quality index from LAQN pollution analysers. Not all analysers on the network are contacted every hour, so some sites may show 'no data'. Data have undergone automatic validity checks.
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.
* 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.