Information supplied by Met Éireann
Today will start misty with widespread fog and the fog will only gradually thin and lift during the morning.
Winds will be light variable but increase moderate southerly along west coasts during the afternoon.
Some bright or sunny spells will break through after fog lifts with top temperatures of 16 to 19 degrees.
Tonight will continue to be dry with broken cloud and mist and fog will return, especially over the eastern half of the country.
But southerly winds will gradually increase moderate by morning and fresh along west coasts.
Lowest temperatures will be around 7 to 12 degrees.
Status orange fog Warning for Ireland.
There will be widespread fog this morning, dense in places.
The alert is in pace until midday on Monday.