Mood

Mood is how the reader feels emotionally at a point in a piece of literature.

Examples
Because the story took place in a cemetery, the mood was very bleak.

"The candlebuds opened their wide white flowers flimmering under the light that prick down from the first stars. Their scent spilled out into the air and took possesstion of the island."

Synonyms

 * atmosphere
 * feeling
 * emotion