Chronoscape

Chronoscape sets your Mac's wallpaper to match the real time of day and the current weather where you are. Morning light in the morning. Rain when it rains. Dark when it gets dark.

Each scene is a single real location, seen across every hour of the day and every weather condition. Not a slideshow of unrelated photos — the same view, following the same sun, under the same sky as the one outside your window.

Features: real sunrise/sunset timing, weather matching (clear, cloudy, rain, snow, fog), a different scene per display at native resolution, an optional rotation timer, and offline support using your Mac's own clock.

Free to download, with an optional Pro upgrade.