Moderate to high levels of air pollution are expected across urban centres in Northern Ireland today, 11 January.
In a statement the Department of Agriculture and Rural Affairs said: "The wind is expected to strengthen from the early hours of Friday morning which should disperse pollutants and bring levels down.
"The high levels of pollution are likely to arise as a result of emissions from road vehicles and home heating and the current cold, still weather conditions in which pollutants are not dispersed."
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