The fire started in the Glencullen area last night.
Locals in Lucan have been urged by Dublin Fire Brigade to close their windows and doors following a fire in the Dublin mountains.
The fire service responded to a gorse fire in the Glencullen area last night.
Smoke has now spread as far as Lucan, which has resulted in the fire service issuing the appeal on social media.
Two engines stayed overnight, and crews from Dun Laoghaire and Rathfarnham are in attendance today.

Father Of Young Inter-County Hurler Who Died From Heart Condition Raises Awareness Of SADS
Kfm Obituary Notices
Kildare Revealed As Third Highest Ranked County For New Car Registrations Last Year
Construction Of Two Bus Shelters Begin Near The Curragh
Disappointment As Parochial House In Celbridge Set For Future Plans Still Not Purchased By KCC
Initial Scoping Exercise Undertaken For Future Management Of Curragh
ESB Identifies Two Kildare Areas As Dangerous For Swimming, As Heat Warning Continues
€640,000 Worth Of Cannabis Seized In Ballymore Eustace