High and moderate levels of air pollution have been reported in the North West.

This report on Sunday 11 December highlighted the pollution in Northern Ireland due to particulate matter. The weather situation is unlikely to change significantly over the next 24 hours which may cause this pollution to persist.

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The high levels of pollution are believed to be as a result of local pollution - home heating emissions and the current cold, calm weather conditions in which pollutants are not being dispersed.

During periods of High Pollution the symptoms of people with lung or heart disease may worsen. Healthy people are unlikely to experience any ill effects.