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A cloud of volcanic ash from the eruption of the Eyjafallajokull volcano in Iceland continues to affect UK airspace. This cloud of volcanic ash has grounded most flights from UK airports, due to the dangers to aircraft engines from the fine abrasive dust. Current 96 hour back trajectories continue to indicate that air arriving over the UK has originated from Iceland. Whilst the volcano continues to erupt the ash cloud is therefore likely to remain over the UK.

For the moment there has been no measured impact on ground-level air pollutants monitored for the protection of human health.

Please see details.