Fog warning in place tonight

Met Éireann has issued an orange fog warning.

The forecaster says there will be dense fog in many areas this evening and tonight with visibility dropping to less than 100m in places.

AA Roadwatch is advising drivers to slow down and use their fog lights, but they're also reminding people that they will need to turn them off again afterwards.

In Dublin, there are already patches of heavy fog on the M50, particularly between the Ballymun and Blanchardstown junctions.

The fog warning is expected to remain in place until 10am tomorrow morning.