Met Eireann issues nationwide orange weather warning
Met Eireann has issued an orange weather alert for Monday with dense fog expected to linger in many parts of the country.
And forecasters have also said there is still some hope of a white Christmas - just don't expect the snow to stick around.
Today's status orange warning is valid until midnight tonight as widespread fog is expected across the country, becoming dense in some places.
Motorists are being advised of poor visibility and hazardous driving conditions.
AA Roadwatch has urged motorists to reduce their speed, keep a safe distance from the vehicle in front and use their fog lights in the affected areas (but don't forget to turn them off afterwards).
Status Orange Fog Warning in place for country today valid until midnight. Munster, Connacht & midlands worst affected so far. Use fog lights when needed; switch them off when no longer necessary. pic.twitter.com/W7OiuNbkkK— AA Roadwatch (@aaroadwatch) December 18, 2017
Monday is set to remain mostly dry but mist and fog is expected to linger throughout the day.
There's a chance of widespread drizzle in the west for the first part of the day.
Met Eireann says that it will be cold in foggy areas but elsewhere it will be dry with temperatures hitting a high of seven degrees.
Looking a little further forward, this week is set to be milder than the recent blast of Arctic conditions with daytime temperatures hitting 11C or 12C later in the week in places.
"It's probably near average for this time of the year. The only thing below average is the rainfall - although that doesn't mean it will be completely dry," forecaster Liz Walsh said.
She added that while a white Christmas is looking increasingly unlikely, Met Eireann haven't ruled it out completely.
"We wouldn't rule out the risk of snow. Although if it does happen to snow, it doesn't look like it will stick around," she said.
Fog has been reported so far this morning in many parts of Munster, Connacht and the midlands.
Motorists are warned that the fog may linger today, causing hazardous driving conditions in many areas.
Meanwhile, a number of incidents are causing delays for early morning commuters.
A collision on the M1 at Junction 6 Balbriggan has been cleared by emergency services.
Meanwhile, the M50 is busy southbound from the Blanchardstown to Lucan following an earlier incident.
In Cork a vehicle which caught fire on the M8 near the Dunkettle Interchange has been cleared. Delays on approach are easing.
Luas services on the green line are running 15 minutes behind due to a technical fault on a tram.
Delays of 15 minute on the #Luas Green Line due a technical fault on a tram. This is impacting on services from Bridesglen Northbound— Luas (@Luas) December 18, 2017