Elemental Plane Of Fire

From the Monster Manual:
Fire represents vibrancy, passion, and change. At its worst, it is cruel and wantonly destructive, as the efreet often are, but at its best, fire reflects the light of inspiration, the warmth of compassion, and the flame of desire. A blazing sun hangs at the zenith of a golden sky above the Plane of Fire, waxing and waning on a 24-hour cycle. It ranges from white hot at noon to deep red at midnight, so the darkest hours of the plane display a deep red twilight. At noon, the light is nearly blinding.
The weather on the plane is marked by fierce winds and thick ash. Although the air is breathable, creatures not native to the plane must cover their mouths and eyes to avoid stinging cinders.