It comes into effect at 5 am tomorrow morning.
A Status Yellow fog warning has been issued for 11 counties for the morning.
It'll come into effect in the Midlands, Cavan, Monaghan, Dublin, Kildare, Louth, Meath and Wicklow from 5am until 10am.
Met Eireann is warning of poor visibility and difficult driving conditions, due to dense fog.
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