Firefighters are tackling two gorse fires in the Dublin Mountains.
One, which started early this morning, is off the Piperstown Road, near the Hellfire Club.
The other is not far away from the first, at Glassamucky Road where it joins Cunard Road Upper.
Dublin Fire Brigade is appealing to people to avoid the area.
Smoke from the fires has spread across the south of Dublin and the fire brigade is advising people in affected areas to keep their windows closed.
In a statement, Dublin Fire Brigade said: "Roads in the area are obscured by smoke. If you are living in the area and are affected by smoke, please keep your doors and windows closed.
"Farmers in the area are urged to check on their livestock. Aerial firefighting will commence shortly. Please avoid the area and please do not fly drones near the area."
Gorse fire at Bray Head
Separately, a large gorse fire on Bray Head was brought under control by the Wicklow fire services.
Crews from Greystones and Bray, supported by Civil Defence drones, tackled the blaze this afternoon and are expected to be on site damping down for a number of hours.
Wicklow County Council said there have been numerous gorse fires in the county this week during the recent spell of hot weather.
Crews from Bray responded to multiple fires on the Sugarloaf on three occasions.
There were other fires in Greystones, Rathdrum, Aughrim, Baltinglass, Bray and Wicklow town.
