Drivers across county Armagh this morning (Monday) will have to contend with low visibility for most of the morning.
The Met Office has issued a yellow warning for fog across the county and indeed the rest of Northern Ireland.
Conditions will be poor right through until 10am when it is expected to clear.
A Met Office spokesperson said: “Fog patches are expected to develop on Sunday night, becoming dense in places and perhaps widespread by Monday morning.
“Expect slower journey times with delays to bus and train services possible.
“There is also a chance of delays or cancellations to flights.”
Drivers are advised to expect delays on the roads, especially those travelling on the M1 into Belfast this morning.
Use dipped headlights and turn on fog lights when appropriate.
Avoid using full-beam though, as that can pose a danger to other road users.