To the left of the fountain, dense green foliage frames the monument, with leafy trees painted in rapid, loose strokes that suggest movement and dappled light. The sky above is a luminous blue, streaked with wispy white clouds that are rendered with broad, expressive brushwork, creating a sense of open air and summer brightness. At the base of the fountain, flowering plants and bushes grow in a tangle, their small red blossoms and varied greens painted with dabs and flicks of the brush.

A small wooden structure sits low to the left, partially hidden by foliage, its roof and posts picked out in ochre and brown tones. The lower right corner shows a patch of sunlit ground, where the artist uses creamy yellows and greens to evoke the warmth of the day. Behind the fountain, more trees and a pale wall or building rise, their forms softened and partially obscured by the play of light and shadow. The Fountain of Apollo, Madrid is attributed to Joaquín Sorolla, as confirmed by the title and artist's name.

The painting is executed on a panel, and the visible brushwork ranges from thick, impasto highlights on the statue to thinner, more transparent washes in the sky and foliage. Sorolla's handling of paint is energetic and varied, with quick, gestural marks describing the texture of stone, the flicker of leaves, and the shimmer of water. The composition is carefully balanced, with the vertical thrust of the fountain offset by the horizontal spread of trees and the low garden structures.

The palette is dominated by cool blues and greens, punctuated by the creamy whites of the stone and the occasional warm accent in the flowers and wooden roof.