Foxes are typically nocturnal animals, especially those who can be found around urban areas, as they prefer to hunt and wander around at night when the chances of them being seen or disturbed by humans is less likely, and there is less going on at this time of night. However, contrary to what some believe, some foxes may occasionally be active during the day as long as they feel secure and have somewhere nearby to freely escape to should they need to flee.
Foxes can be found during the day pursuing prey like squirrels, who are also active during the day. You are more likely to see a fox out during the day during times of food shortages. Contrary to popular belief, not all foxes that are out during the day are rabid, this is simply not true, though it is a rare possibility. One breed of fox that is definitely diurnal (most active during the day) is the Channel Island Fox.